Grayloc Catalog (GLOC 105 11 09 5M) 20

User Manual: 105-20

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Grayloc®
Product Catalog

Grayloc®® Products
Engineering Services
❖
❖
❖
❖
❖
❖

Custom design
Finite element analysis
Retrofit designs
Testing program development
Project technical support
State of the art metal-to-metal seal designs

Quality Programs
❖
❖
❖
❖
❖

ASME Section VIII, Division 1 & 2
MIL-I-45208A inspection system requirements
ISO 9001
Total product materials traceability
Complete calibration program, with certifications, traceable to the National Calibration
Bureau of Standards and Technology

Customer Order Processing
❖
❖
❖
❖
❖
❖

Highly trained personnel
State of the art machine tools
Large raw material inventory
Large service oriented finished goods inventory
Action team for critical orders
Factory trained field service technicians
available 24 hours a day, 7 days a week
❖ Packaging and shipment preparation that
exceeds industry standards
❖ Project management

Grayloc Products . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
The Grayloc Metal-to-Metal Seal . . . . . . . . . . . . . . . .4
Grayloc Connector Applications . . . . . . . . . . . . . . . . .5
Tension, Compression, Bending . . . . . . . . . . . . . . . . .6
Conserves Space and Weight . . . . . . . . . . . . . . . . . .7
Saves Time and Money . . . . . . . . . . . . . . . . . . . . . . .8
How to Select Grayloc Connectors . . . . . . . . . . . . . . . . .9
Part Numbers/ Dimensions . . . . . . . . . . . . . . . . . . . . . .10
Butt Weld Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Blind Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Clamp Assemblies . . . . . . . . . . . . . . . . . . . . . . . . . .16
Seal Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Other Products and Piping Accessories . . . . . . . . . . .18
Seal Rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Heavy-Duty Connectors . . . . . . . . . . . . . . . . . . . . . .19
Hubs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
Special Connectors . . . . . . . . . . . . . . . . . . . . . . . . .22
Jacketed Connectors . . . . . . . . . . . . . . . . . . . . . . . .23
Remotely Operated Connectors . . . . . . . . . . . . . . . .24
Grayloc Compact Flanges . . . . . . . . . . . . . . . . . . . .25
Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Thermowells . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .27
Hinged Vessel Closures . . . . . . . . . . . . . . . . . . . . . .27
Studded Vessel Closures . . . . . . . . . . . . . . . . . . . . .28
Conversion and Torque Requirements . . . . . . . . . . . . .29
API Flange to Grayloc Connector Conversion . . . . . .29
Bolting Torque Required for Grayloc Clamps . . . . . . .29
Installation and Maintenance Instructions . . . . . . . . . .30
Standard Terms and Conditions . . . . . . . . . . . . . . . . . .31
Engineering, Manufacturing and
Sales Locations . . . . . . . . . . . . . . . . . . .Back Cover
Grayloc Products is pleased to offer its products with the products/
services guarantee as set forth in the terms and conditions printed on page 31
of this catalog. These terms and conditions apply to written or oral orders.
The Grayloc product guarantee is only valid when the installation and maintenance instructions on page 30 are followed. For any questions about Grayloc
Products or their selection, installation, use, or service, please contact the
nearest office listed on the back cover for professional assistance and service.

3

The Grayloc Metal-to-Metal Seal
A Grayloc® connector has three
components:
❖

Metal Seal Ring — The seal
ring resembles a “T” cross
section. The leg of the “T”
forms a rib that is held by the
hub faces as the connection
is madeup. The two arms
form lip seals that create an
area of sealing surface with
the inner surface of the hub.
Internal pressure works to
reinforce this seal.

❖

Two Hubs — The clamp fits
over the two hubs and forces
them against the seal ring
rib. As the hubs are drawn
together by the clamp
assembly, the seal ring lips
deflect against the inner
sealing surfaces of the hubs.
This deflection elastically
loads the lips of the seal ring
against the inner sealing
surface of the hub, forming
a self-energized seal.

❖

Clamp Assembly —
Designed to provide nearly
360° clamping contact with
the hubs. A relief notch in
the center of the clamp
segments allow even distribution of makeup forces.
No specific orientation is
required when installed.

How the Grayloc Connector Seals
Clamping
Surface

Clamp

Hub

Seal Ring

Seal Ring
Lip

Rib of the seal ring is clamped between hub faces. Lips of
the seal ring engage inner hub surface in an interference fit
which deflects the lips to achieve a seal.

Under Pressure:
Grayloc Connector vs. Flange

Internal pressure energizes the
Grayloc seal lips, reinforcing the seal.

4

Pressure acts directly on the flange faces
reducing seal integrity.

Rib

Grayloc Connector Applications
The simplicity, sealing efficiency,
and economy of the Grayloc®
connector benefits a wide
range of industries in various
applications:

❖

Power Industry —
General piping / valve ends,
steam lines, pump inlet /
outlet lines, and chemical
clean out closures.

❖

Petrochemical Industry —
Reactor vessel nozzles,
vessel closures, general
piping / valve ends in petroleum refining and chemical
processing plants.

❖

Oil and Gas Production —
Onshore and offshore wellheads, tees and ells, manifolds, chokes, valve ends,
compressors, general piping,
loading risers and pipelines.

Synthetic Fuels, Coal
Gasification, and Coal
Liquefaction —
General piping, vessel
closures, reactor vessels,
and valve ends.

❖

❖

Marine — Subsea piping
and riser systems, floating
production, storage, offloading (FPSO) vessels, and
tanker loading and unloading
facilities.

❖

Aerospace —
Rocket test stands, fuel lines,
hydraulic and pneumatic
piping systems.

❖

Food Processing—
Sanitary/general piping
connectors, vessel closures
and valve ends.

❖

Environmental —
Hazard waste disposal
and fugitive emissions
containment.

The Office of Coal Research, U.S. Department of the Interior, and the
American Gas Association jointly sponsored a program to develop coal
gasification technology. On this pre-quench tower for raw gas purification,
two Grayloc vessel closures and several smaller Grayloc connectors were
used for pressures of 1,650 psi and temperatures to 650° F.
Photograph courtesy of the Institute of Gas Technology.

The use of Grayloc connectors, on a Centex Oil and Gas, Inc. platform
in the Gulf of Mexico, saved 15" of horizontal space on the separator
manifolding of this skid-mounted production unit, and reduced the total
topside platform weight by more than 11 tons.

5

Tension, Compression, Bending
Anything the pipe can take, so can the Grayloc Connector
When manufactured from the same material as the pipe, the Grayloc® connector surpasses the
strength of the pipe and that of most other components that may be connected.
The rib of the seal ring prevents the seal lip from being crushed by over-tightening. While it acts as
a positive stop during makeup, the rib also transfers compressive and bending loads from one hub
element to another. The rib bearing area is ample to carry the most severe loading that a piping
system can withstand.

Tension

Bending

Compression

❖

Withstands greater tension
loads than conventional
ANSI flanges

❖

❖

❖

In most cases, withstands
more tension loading than
the pipe itself

Numerous independent tests
have shown that Grayloc connectors withstand severe
bending loads without leaking
or loosening

In normal piping applications,
it is not possible to overload
the Grayloc connector or seal
ring in compression

❖

❖

In one test, 2 ⁄ " GR 20
Grayloc connector was
welded to 21⁄2" Sch. XX
pipe and subjected to a 2"
cold bend, 36" on center —
connector did not leak and
clamp bolting remained tight

When very high compressive
loads occur, the maximum
load on the connector is
determined by the limit of
the pipe

❖

In most cases, the area
of the seal ring rib is equal
to or larger than that of
the cross section of
adjoining pipe

❖

In destructive tests, pipe can
be loaded in tension to failure
without causing the Grayloc
connector to leak

1

2

Examples of Grayloc connector applications in
extreme service conditions
Vibration:
High Temperature:

Service experience to 1700° F.

Low Temperature:

Routine liquefied gas service including liquid
hydrogen and nitrogen to -425° F.

Thermal Shock:

Corrosion:
Zero Leak Rate:

6

80 to 200 cycles per second under 6,600 psi

Routine service with temperature changes up to
300° F. per hour.
Liquid sodium service at 1200° F.
10-6 atm cc/s Helium

Service Extremes
Vibration, heat, cold and thermal
shock often accompany service
in which Grayloc connectors
are heavily loaded. Grayloc
connectors consistently withstand severe situations without
routine maintenance. Special
designs permit maintenancefree service even under the
extreme conditions shown
in the table.

Conserves Space and Weight
The Grayloc® connector is
significantly lighter and smaller
than a comparably rated ANSI
or API ring joint flange connection, providing an opportunity
to design lightweight, compact
systems. Close piping and
hookup arrangements can
be easily made as the clamp
completely rotates around
the hub.
❖

Smaller diameter

❖

Shorter length

❖

No bolt holes to align

Grayloc vs. Flanges

Size

Connection

Diameter
(inches)

Length
(inches)

Weight
(pounds)

3"

Grayloc Connector
ANSI 1500 Flange
API 5000 Flange

6,593
3,705
5,000

6.875
10.500
10.500

6.750
9.250
8.625

37
121
92

6"

Grayloc Connector
ANSI 1500 Flange
API 5000 Flange

6,359
3,705
5,000

12.000
15.500
15.500

9.500
13.500
14.250

144
407
365

10"

Grayloc Connector
ANSI 1500 Flange
API 5000 Flange

5,368
3,705
5,000

17.625
23.000
23.000

12.325
20.000
20.875

415
1100
1032

Length

Length

Diameter

Diameter

W.P.
(psi)

7

Saves Time and Money
The Grayloc® connector can
be assembled or disassembled
quicker and easier than a flange
connection. Usually, 3 to 8
Grayloc connectors can be
assembled/disassembled
in the same time as one
flange connection.

Versatile Design
The standard Grayloc assembly
has two hubs arranged for butt
welding to pipe. However, a
complete line of other piping
components is available for
most pipe sizes and service
conditions.

❖

No bolt holes to align

❖

Only 4 bolts to tighten (8 -24
for a conventional flange)

❖

Hubs (socket weld / threaded)

❖

Torque required —
as much as 70% lower
than for a RTJ flange

❖

Tees and ells

❖

Nozzles

Maintenance is simple with
only four bolts to remove. No
periodic re-tightening of bolts
is required once the connector
is in service.
The necessary inventory of
spare parts is significantly
reduced since the Grayloc
connector is sized according
to pipe size, schedule, and
service. In most instances, only
one Grayloc connector size is
necessary for each pipe size
and seal rings can be reused.

8

Heavy duty connectors for
oilfield and other applications
are available.
Other equipment manufacturers
(valves, pumps, compressors,
vessel, etc.) are licensed to
machine Grayloc hub profile /
seats integral to their products.

How to Select Grayloc Connectors
Hub Material Selection Chart
ANSI
Group No.

Designation
Steel

1.1

Carbon

Grayloc® Selection Chart
-20° F. to +700° F.

Forging
(1)

A105

ANSI Flange Series

A350-LF2
1.2

31⁄2 Ni

A350-LF3

1.4

Carbon

A350-LF1

C-1⁄2 Mo

A182-F1

⁄2 Cr-1⁄2 Mo

A182-F2

1.5
1.7

1

1.9

600

⁄

1 GR 5

1 GR 5

1 GR 5

1 GR 4

3

⁄4

1 GR 7

1 GR 7

1 GR 5

1 GR 4

1 GR 4

1

1 GR 11

1 GR 11

1 GR 7

1 GR 5

1 GR 5

11⁄2

11⁄2 GR 14

11⁄2 GR 14

11⁄2 GR 14

11⁄2 GR 11

11⁄2 GR 11

21⁄4 Cr-1Mo

A182-F22

1.13

5Cr-1⁄2 Mo

A182-F5
A182-F5a
A182-F9

2

2 GR 20

2 GR 20

2 GR 20

2 GR 14

2 GR 11

A182-F304

21⁄2

21⁄2 GR 25

21⁄2 GR 25

21⁄2 GR 25

21⁄2 GR 20

21⁄2 GR 20

A182-F304H

3

3 GR 27

3 GR 27

3 GR 25

3 GR 23

3 GR 20

A182-F316

4

4 GR 40

4 GR 34

4 GR 34

4 GR 31

4 GR 23

5

5 GR 52

5 GR 46

5 GR 46

5 GR 40

5 GR 31

6

6 GR 62

6 GR 62

6 GR 52

6 GR 46

6 GR 34

A182-F347

8

8 GR 82

8 GR 76

8 GR 67

8 GR 52

8 GR 46

A182-F347H

10

10 H 97

10 H 94

10 H 84

10 H 72

10 H 62

A182-F348

12

12 M 120

12 M 112

12 M 102

12 M 82

X12 M 72

X14 GR 120

X14 GR 106

1.14

(1)

A182-F316H
2.4

18Cr-10Ni-Ti

A182-F321
A182-F321H

2.5

18Cr-10Ni-Cb

A182-F348H

14

X14 GR 130

16

X16 GR 140

B564-N08800

18

X18 GR 170

Alloy C276

B574-N10276

20

X20 GR 180

Alloy 625

B564-N06625

24

X24 GR 220

Alloy 825

B425-N08825

Duplex

A182-F51

2.7

25Cr-20Ni

A182-F310

3.5

Alloy 600

B564-N06600

3.6

Alloy 800

3.8

...

1 GR 4

Grayloc Size

A182-F11

1.10

16Cr-12Ni-2Mo

4500

A182-F12

1Cr- ⁄2 Mo

2.2

2500

2

11⁄4 Cr-1⁄2 Mo

18Cr-8Ni

1500

1

1

2.1

900

Nominal
Pipe Size

Additional sizes available upon request

EXAMPLE
2" ANSI 1500 = 2 GR20 Grayloc

A182-F53
A182-F55

Pipe Size
Grayloc Clamp Size

(1) Standard Grayloc materials referenced in
this catalog.

Grayloc Ring Size
to Match Pipe ID

ANSI Pressure Ratings Ceiling Values
Temperature, °F

600

900

1500

2500

4500

-20 to 100

1500

2250

3750

6250

11250

200

1500

2250

3750

6250

11250

300

1455

2185

3640

6070

10925

400

1410

2115

3530

5880

10585

500

1330

1995

3325

5540

9965

600

1210

1815

3025

5040

9070

650

1175

1765

2940

4905

8825

700

1135

1705

2840

4730

8515

All Thread Stud
Clamp

Butt Weld Hub

Notes to Grayloc Selection Chart:
1.Corrosion allowance: 1/32" for 1" nominal and 1/16" for
larger pipe sizes.
2.Connectors listed in the Grayloc Selection Chart exceed
the ANSI ceiling pressure ratings. Actual ratings are
available upon request.
3.Ratings are based on carbon steel clamps.

Seal Ring

Spherical
Face Nut

9

Part Numbers / Dimensions
Butt Weld Hubs
Grayloc® hubs are usually made of the same
generic material as the other system components
they connect. Standard hub materials are SA105
carbon steel and SA182-F316 stainless steel, but
they can be manufactured from most machinable
metals, including all of the carbon, low alloy,
austenitic stainless steels, MONEL*, INCONEL*,
titanium and zirconium alloys.
Sealing surfaces on carbon steel and low alloy
steel weld hubs and fittings are protected by
electroless nickel coating. The welding bevel
and all part tolerances are in accordance with
ANSI B16.5.

A
B

E
D

25°

F
C

* MONEL and INCONEL are trademarks of Special Metals Corp.

Nominal Sched.
Pipe
or
Size
Weight

Hub
Size

Part Number
Approx.
Carbon Stl. Stainless Stl. Weight
SA105
SA182-F316(5)
(lb.)

Seal
Ring
Size

Clamp
Size

Pipe
OD
A

Pipe
ID
B

C

Dimensions (Inches)
D(1)
E

F

Depth
of
Recess(2)

⁄2

40
80
160
XX

1
1
1
1

GR5
GR5
GR4
GR4

52192D
52193D
52194D
52195D

55955D
53439D
53686D
53437D

0.68
0.68
0.67
0.73

5
5
4
4

1
1
1
1

0.840
0.840
0.840
0.840

0.622
0.546
0.466
0.252

2.000
2.000
2.000
2.000

1.750
1.750
1.750
1.750

1.500
1.500
1.500
1.500

0.313
0.313
0.313
0.313

......
......
......
......

3

⁄4

40
80
160
XX

1
1
1
1

GR7
GR7
GR5
GR4

52196D
52233D
52198D
52199D

53440D
53218D
53442D
53447D

0.62
0.60
0.71
0.76

7
7
5
4

1
1
1
1

1.050
1.050
1.050
1.050

0.824
0.742
0.612
0.434

2.000
2.000
2.000
2.000

1.750
1.750
1.750
1.750

1.500
1.500
1.500
1.500

0.313
0.313
0.313
0.313

......
......
......
......

1

40
80
160
XX

1 GR11
1 GR11
1 GR7
1 GR5

53225D
53226D
53227D
53228D

53231D
53232D
53233D
53234D

0.51
0.54
0.66
0.78

11
11
7
5

1
1
1
1

1.315
1.315
1.315
1.315

1.049
0.957
0.815
0.599

2.000
2.000
2.000
2.000

1.750
1.750
1.750
1.750

1.500
1.500
1.500
1.500

0.313
0.313
0.313
0.313

......
......
......
......

11⁄2

40
80
160
XX
XX

11⁄2 GR14
11⁄2 GR14
11⁄2 GR14
11⁄2 GR14
11⁄2 GR11

52100D
52101D
52102D
52103D
52134D

52813D
52814D
52815D
52816D
52442D

1.68
1.83
2.01
2.15
2.38

14
14
14
14
11

11⁄2
11⁄2
11⁄2
11⁄2
11⁄2

1.900
1.900
1.900
1.900
1.900

1.610
1.500
1.338
1.100
1.100

3.125
3.125
3.125
3.125
3.125

2.375
2.375
2.375
2.375
2.375

2.375
2.375
2.375
2.375
2.375

0.437
0.437
0.437
0.437
0.500

......
......
......
......
......

2

40
80
160
XX
XX

2 GR20
2 GR20
2 GR20
2 GR14
2 GR11(3)(4)

52104D
52105D
52115D
52113D
52337D

52821D
52822D
52823D
52824D
999628D

2.36
2.59
2.93
3.40
4.00

20
20
20
14
11

2
2
2
2
2

2.375
2.375
2.375
2.375
2.375

2.067
1.939
1.687
1.503
1.503

3.625
3.625
3.625
3.625
3.625

2.750
2.750
2.750
2.750
2.812

2.875
2.875
2.875
2.875
2.875

0.437
0.437
0.437
0.437
0.559

......
......
......
......
0.059

1

(1) Length of hub (“D” dimension) may increase when used with wall thickness greater than standard pipe schedules. (2) Depth of seal ring seat recess.
(3) Hub with recessed seal ring seat. (4) Hub ID less than pipe ID. (5) SA479-316/316L may be substituted based on material availability.
(6) Carbon steel hub part numbers with “D” suffix are dual certified to SA105/SA350 LF2. (7) Stainless steel hub part numbers with “D” suffix are dual certified
to SA182 F316/F316L.

10

Butt Weld Hubs

Nom.

Sched.

Pipe
Size

or
Weight

Part Number
Hub
Size

Carbon Stl.
SA105

Stainless Stl.
SA182-F316(5)

Approx. Seal
Weight Ring

Pipe

Pipe

Clamp

OD

ID
B

(lb.)

Size

Size

A

Depth
Dimensions (Inches)

of

C

D(1)

E

F

Recess(2)

21⁄2

40
80
160
XX

21⁄2 GR25
21⁄2 GR25
21⁄2 GR20(1)
21⁄2 GR20

52215D
52216D
52218D
52219D

52825D
52826D
52827D
52828D

5.86
6.36
7.16
7.75

25
25
20
20

21⁄2-3
21⁄2-3
21⁄2-3
21⁄2-3

2.875
2.875
2.875
2.875

2.469
2.323
2.125
1.771

5.000
5.000
5.000
5.000

3.250
3.250
3.250
3.250

4.000
4.000
4.000
4.000

0.500
0.500
0.500
0.500

......
......
......
......

3

40
80
160
XX
XX
XX

3 GR27(4)
3 GR27
3 GR25
3 GR25
3 GR23
3 GR20(4)

52204D
52205D
52226D
52227D
52247D
52160D

52844D
52845D
52846D
52847D
53848D
53668D

4.95
5.50
6.53
7.23
8.00
9.00

27
27
25
25
23
20

21⁄2-3
21⁄2-3
21⁄2-3
21⁄2-3
21⁄2-3
21⁄2-3

3.500
3.500
3.500
3.500
3.500
3.500

3.068
2.900
2.624
2.300
2.300
2.300

5.000
5.000
5.000
5.000
5.000
5.000

3.250
3.250
3.250
3.250
3.250
3.250

4.000
4.000
4.000
4.000
4.000
4.000

0.500
0.500
0.500
0.500
0.500
0.500

......
......
......
......
......
......

4

40
80
120
160
XX
...
...

4
4
4
4
4
4
4

GR40
GR40
GR34
GR34
GR31
GR27
GR25

52302D
52303D
52418D
52311D
52314D
......
......

52851D
52852D
55888D
52853D
52854D
......
......

6.97
7.80
9.39
10.13
11.60
......
15.00

40
40
34
34
31
27
25

4
4
4
4
4
4
4

4.500
4.500
4.500
4.500
4.500
4.500
4.500

4.026
3.826
3.624
3.438
3.152
......
......

6.000
6.000
6.000
6.000
6.000
6.000
6.000

3.625
3.625
3.625
3.625
3.625
3.625
3.625

5.000
5.000
5.000
5.000
5.000
5.000
5.000

0.500
0.500
0.500
0.500
0.500
0.500
0.500

......
......
......
......
......
......
......

5

40
80
160
XX
...
...

5
5
5
5
5
5

GR52
GR52
GR46
GR40
GR34
GR31

52380D
52381D
52385D
52383D
......
......

52867D
135344D
142751D
52870D
......
......

11.00
11.00
17.00
21.53
26.00
28.00

52
52
46
40
34
31

5
5
5
5
5
5

5.563
5.563
5.563
5.563
5.563
5.563

5.047
4.813
4.313
4.063
......
......

7.500
7.500
7.500
7.500
7.500
7.500

4.375
4.375
4.375
4.375
4.375
4.375

6.500
6.500
6.500
6.500
6.500
6.500

0.625
0.625
0.625
0.625
0.625
0.625

......
......
......
......
......
......

6

40
80
160
XX
XX
...

6 GR62
6 GR62
6 GR52
6 GR52
6 GR46(3)(4)
6 GR40(3)

52400D
52401D
52413D
52414D
52321D

52874D
52875D
52876D
52877D
55891D

22.00
24.17
33.19
33.75
37.11

62
62
52
52
46

6
6
6
6
6

6.625
6.625
6.625
6.625
6.625

6.065
5.761
5.187
4.897
4.897

9.250
9.250
9.250
9.250
9.250

4.625
4.625
4.625
4.625
4.750

7.750
7.750
7.750
7.750
7.750

0.750
0.750
0.812
0.812
0.934

......
......
......
......
0.122

......

......

43.00 40

6

6.625

......

9.250

4.750

7.750

0.934

0.122

40
80
160

8 GR82
8 GR76
8 GR72

52405
52425G
52423G

52878
52882
52880

32.00 82
41.00 76
50.00 72

8 or X8
8 or X8
8 or X8

8.625
8.625
8.625

7.981
7.625
6.813

11.500
11.500
11.500

5.375 10.000
5.375 10.000
5.375 10.000

0.750
0.750
0.750

......
......
......

XX
XX
...
...

8 GR72
8 GR67
8 GR62
8 GR52(3)

52881

8
8
8
8

or
or
or
or

X8
X8
X8
X8

8.625
8.625
8.625
8.625

6.875
6.875
......
......

11.500
11.500
11.500
11.500

5.375
5.375
5.375
5.500

10.000
10.000
10.000
10.000

0.750
0.750
0.750
0.934

......
......
......
0.122

40
60
80
160
...
...
...
...

10H102
10H97
10H97
10H84
10H94
10H82
10H72
10H62(3)

10H
10H
10H
10H
10H
10H
10H
10H

or
or
or
or
or
or
or
or

X10H
X10H
X10H
X10H
X10H
X10H
X10H
X10H

10.750 10.020
10.750
9.750
10.750 9.562(8)
10.750
8.500
10.750
......
10.750
......
10.750
......
10.750
......

13.625
13.625
13.625
13.625
13.625
13.625
13.625
13.625

6.000
6.000
6.000
6.000
6.000
6.000
6.000
8.000

11.625
11.625
11.625
11.625
11.625
11.625
11.625
11.625

1.250
1.250
1.250
1.250
1.250
1.250
1.250
1.434

......
......
......
......
......
......
......
0.184

8

10

52422G
......
......

......
......

50.00 72
67
69.00 62
78.00 52

52518
52519
52520
52521
......
......
......
......

52900
52901
52902
52903
......
......
......
......

55.00
55.00
55.00
89.00
65.00
100
115
136

H90208-48

H90208-49 52.00

102
97
97
84
94
82
72
62

(1) Length of hub (“D” dimension) may increase when used with wall thickness greater than standard pipe schedules. (2) Depth of seal ring seat recess.
(3) Hub with recessed seal ring seat. (4) Hub ID less than pipe ID. (5) SA479-316/316L may be substituted based on material availability.
(6) Carbon steel hub part numbers with “D” suffix are dual certified to SA105/SA350 LF2. (7) Stainless steel hub part numbers with “D” suffix are dual certified
to SA182 F316/F316L. (8) ID is 9.750 for stainless steel and 9.562 for other steel.

11

Butt Weld Hubs

Nom.

Sched.

Pipe
Size

or
Weight

12

STD
XS
80
160
......

Part Number
Hub
Size

12M120
12M120
12M112(4)
12M102
12M82(3)

Approx.

Seal

Pipe

Pipe

Carbon Stl. Stainless Stl. Weight
SA105
SA182-F316(5) (lb.)

Ring

Clamp

OD

ID

Size

Size

A

B

C

D(1)

E

F

Recess(2)

52596
52597
52598
52599G
......

120
120
112
102
82

12.750
12.750
12.750
12.750
12.750

12.000
11.750
11.752(8)
10.126
......

16.000
16.000
16.000
16.000
16.000

6.625
6.625
6.625
6.625
8.000

14.000
14.000
14.000
14.000
14.000

1.375
1.375
1.250
1.375
1.599

......
......
......
......
0.184

15.750
16.500
15.750
16.500
19.000
19.000
16.500
15.750
15.750
16.500
19.000
18.000
19.000
18.000
19.000
20.250
23.000
20.250
23.000
23.000
23.000
23.000
23.000
23.000
24.000
27.500
27.500
27.500
27.500
27.500
27.500
27.500
29.250
31.500
31.500

0.687
1.125
0.812
1.250
1.750
1.750
1.250
0.812
0.750
1.188
1.688
0.750
1.688
0.750
1.688
0.750
1.625
0.750
0.750
0.750
1.625
1.625
0.750
0.750
1.250
1.250
1.250
1.000
1.250
1.000
1.000
1.000
1.625
1.000
1.000

......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......

X14GR112

P112
12

121/2

13

70
70
98
129
182

12M
12M
12M
12M
12M

or
or
or
or
or

X12M
X12M
X12M
X12M
X12M

of

Grayloc Sizes and Hub Dimensions for
Large I.D. Applications are Provided Below

Nominal I.D.

11

52904
52905
52906
52907
......

Depth
Dimensions (Inches)

X14GR120

P120
S120
S125
P125
X14GR125
X14GR130

P130
S130
14

X16GR140

15

X16GR152

16

X18GR160

17

X18GR170

S140
S152
U160
X20GR170
18

X20GR180

19

U180
U192

20

X20GR192
X20GR200

21

3V200
3W200
3W215
X24GR215

22

3W226

23
24

X24GR226
X24GR232
X24GR240

26
29

30GR264
30GR292

Y240

......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......

......
......
......
......
......
......
......
.......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......

......
......
202
153
271
......
......
......
......
......
......
......
......
......
194
......
403
......
......
......
331
......
......
......
686
......
......
......
......
......
......
......
......
......
......

112
112
120
120
120
125
125
125
130
130
130
140
140
152
152
160
160
170
170
180
180
192
192
200
200
200
215
215
226
226
232
240
240
264
292

X14
P or 5P
X14
P or 5P
S
S
P or 5P
X14
X14
P or 5P
S
X16
S
X16
S
X18
U
X18
X20
X20
U
U
X20
X20
3V
3W
3W
X24
3W
X24
X24
X24
Y
30
30

17.250
18.500
17.250
18.500
21.000
21.000
18.500
17.250
17.250
18.500
21.000
19.500
21.000
19.500
21.000
21.750
25.000
21.750
24.500
24.500
25.000
25.000
24.500
24.500
26.000
29.500
29.500
29.500
29.500
29.500
29.500
29.500
31.250
33.500
33.500

7.000
7.250
7.000
7.250
7.875
7.875
7.250
7.000
7.000
7.250
7.875
7.750
7.875
7.750
7.875
8.250
8.750
8.250
8.750
8.750
8.750
8.750
8.750
8.750
9.000
9.750
9.750
9.750
9.750
9.750
9.750
9.750
10.000
10.500
10.500

(1) Length of hub (“D” dimension) may increase when used with wall thickness greater than standard pipe schedules. (2) Depth of seal ring seat recess.
(3) Hub with recessed seal ring seat.
(4) Hub ID less than pipe ID. (5) SA479-316/316L may be substituted based on material availability.
(6) Carbon steel hub part numbers with “D” suffix are dual certified to SA105/SA350 LF2. (7) Stainless steel hub part numbers with “D” suffix are dual
certified to SA182 F316/F316L. (8) ID is 11.750 for stainless steel and 11.374 for other steel.

12

Part Numbers / Dimensions
Blind Hubs

E

❖

Stocked for standard-sized Grayloc® connectors

❖

Full pressure rating of the Grayloc connector

❖

Can be used as closures for pressure vessels,
heat exchangers, pumps, compressors, etc.

❖

Can be drilled and tapped for instrumentation

❖

Can be customized to fit specific requirements

D

G

25°

F

C

Hub Size

Part Number
Approx.
Carbon Stl. Stainless Stl. Weight
SA105
SA182-F316(3)
(lb.)

Seal
Ring
Size

Clamp
Size

C

Dimensions (inches)
D
E
F

G

Depth
of
Recess(1)

1 GR4
1 GR5
1 GR7
1 GR11
11⁄2 GR11
11⁄2 GR14

58955D
58922D
58915D
59592D
59050D
59000D

59497D
59525D
59523D
59524D
59300D
59305D

1.02
1.01
0.95
0.94
3.11
2.82

4
5
7
11
11
14

1
1
1
1
11⁄2
11⁄2

2.000
2.000
2.000
2.000
3.125
3.125

1.750
1.750
1.750
1.750
2.125
2.125

1.500
1.500
1.500
1.500
2.375
2.375

0.313
0.313
0.313
0.313
0.500
0.437

0.438
0.438
0.563
0.563
0.563
0.688

......
......
......
......
......
......

2 GR11(2)
2 GR14
2 GR20
21⁄2 GR20
21⁄2 GR23
21⁄2 GR25

59044D
59053D
59002D
59022D
46180D
59020D

59366D
59310D
59315D
59320D
59241D
59325D

3.85
3.96
3.63
9.61
9.39
9.15

11
14
20
20
23
25

2
2
2
21⁄2-3
21⁄2-3
21⁄2-3

3.625
3.625
3.625
5.000
5.000
5.000

1.750
2.000
2.000
2.500
2.500
2.500

2.875
2.875
2.875
4.000
4.000
4.000

0.559
0.437
0.437
0.500
0.500
0.500

0.563
0.688
0.688
0.688
0.688
0.688

0.059
......
......
......
......
......

59320D
95241D
59325D
59330D

3
3
3
3

GR20
GR23
GR25
GR27

59022D
46180D
59020D
59006D

9.61
9.39
9.15
8.32

20
23
25
27

21⁄2-3
21⁄2-3
21⁄2-3
21⁄2-3

5.000
5.000
5.000
5.000

2.500
2.500
2.500
2.500

4.000
4.000
4.000
4.000

0.500
0.500
0.500
0.500

0.688
0.688
0.688
0.938

......
......
......
......

4
4
4
4
4

GR25
GR27
GR31
GR34
GR40

59028D 59275D 16.59
58879D H90103-33D 15.80
59024D 59345D 15.57
59060D 59340D 14.90
59010D
59335
9.72

25
27
31
34
40

4
4
4
4
4

6.000
6.000
6.000
6.000
6.000

2.875
2.875
2.875
2.875
2.125

5.000
5.000
5.000
5.000
5.000

0.500
0.500
0.500
0.500
0.500

0.688
0.938
0.938
0.938
1.000

......
......
......
......
......

5
5
5
5
5

GR31
GR34
GR40
GR46
GR52

59146D H90154-4
59147D 59278D
58261D 59347D
59148D 134752D
58992D 134751D

33.83
32.00
31.78
30.00
29.00

31
34
40
46
52

5
5
5
5
5

7.500
7.500
7.500
7.500
7.500

3.500
3.500
3.500
2.875
2.875

6.500
6.500
6.500
6.500
6.500

0.625
0.625
0.625
0.625
0.625

0.938
0.938
1.000
1.125
1.000

......
......
......
......
......

59149D
59150D
59064D
59014D

50.00
49.00
47.02
35.43

40
46
52
62

6
6
6
6

9.250
9.250
9.250
9.250

3.375
3.375
3.500
2.875

7.750
7.750
7.750
7.750

0.934
0.934
0.812
0.750

1.000
1.125
1.000
1.000

0.122
0.122
......
......

6 GR40(2)
6 GR46(2)
6 GR52
6 GR62

95087D
59282D
59350D
59349D

(1) Depth of seal ring recess.
(2) Hub with recessed seal ring seat.
(3) SA479 316/316L may be substituted based on material availability.
(4) Carbon steel hub part numbers with “D” suffix are dual certified to SA105/SA350 LF2.
(5) Stainless steel hub part numbers with “D” suffix are dual certified to SA182 F316/F316L.
(6) Blind hub sizes, 6 GR and larger, are supplied with an integral lifting profile.

13

Blind Hubs

Hub Size

8 GR52(2)
8 GR62
8 GR67
8 GR72
8 GR76
8 GR82
10H62(2)
10H72
10H82
10H84
10H94
10H97
12M82(2)
12M102
12M112
12M120
X14GR112
P102
P112
X14GR120
P120
S120
S125
P125
X14GR125
X14GR130
P130
S130
X16GR140
S140
X16GR152
S152
X18GR160
U160
(1)
(2)
(3)
(4)
(5)
(6)

14

Part Number
Approx.
Carbon Stl. Stainless Stl. Weight
SA105
SA182-F316(3) (lb.)

59152
55891
59071
59285
......
......
59066
59358
59153
59286
59016
59357
59157
......
59164
......
58265
......
59156 H90252-3
46269
......
59154
59287
59160
......
59159
......
59176
59292
59158
......
......
......
......
130037
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
129669
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......

92
92
87
75
70
68
155
160
150
150
110
105
230
240
175
170
235
341
340
270
331
595
510
325
225
210
283
497
265
480
255
423
347
787

Seal
Ring
Size

Clamp
Size

C

52
62
67
72
76
82
62
72
82
84
94
97
82
102
112
120
112
102
112
120
120
120
125
125
125
130
130
130
140
140
152
152
160
160

8 or X8
8 or X8
8 or X8
8 or X8
8 or X8
8 or X8
10H or X10H
10H or X10H
10H or X10H
10H or X10H
10H or X10H
10H or X10H
12M or X12M
12M or X12M
12M or X12M
12M or X12M
X14
P or 5P
P or 5P
X14
P or 5P
S
S
P or 5P
X14
X14
P or 5P
S
X16
S
X16
S
X18
U

11.500
11.500
11.500
11.500
11.500
11.500
13.625
13.625
13.625
13.625
13.625
13.625
16.000
16.000
16.000
16.000
17.250
18.500
18.500
17.250
18.500
21.000
21.000
18.500
17.250
17.250
18.500
21.000
19.500
21.000
19.500
21.000
21.750
25.000

Depth of seal ring seat recess.
Hub with recessed seal ring seat.
SA479 316/316L may be substituted based on material availability.
Carbon steel hub part numbers with “D” suffix are dual certified to SA105/SA350 LF2.
Stainless steel hub part numbers with “D” suffix are dual certified to SA182 F316/F316L.
Blind hub sizes, 6 GR and larger, are supplied with an integral lifting profile.

Dimensions (inches)
D
E

3.875
4.250
4.250
3.500
3.000
3.000
4.500
5.000
5.000
4.250
3.750
3.500
5.000
5.250
4.250
3.875
4.750
5.750
5.750
4.750
5.000
7.500
5.500
5.000
4.750
4.125
5.000
5.500
4.750
5.500
4.375
5.500
5.500
7.250

10.000
10.000
10.000
10.000
10.000
10.000
11.625
11.625
11.625
11.625
11.625
11.625
14.000
14.000
14.000
14.000
15.750
16.500
16.500
15.750
16.500
19.000
19.000
16.500
15.750
15.750
16.500
19.000
18.000
19.000
18.000
19.000
20.250
23.000

F

0.934
0.750
0.750
0.750
0.750
0.750
1.434
1.250
1.250
1.250
1.250
1.250
1.559
1.375
1.250
1.375
0.687
1.250
1.125
0.812
1.250
1.750
1.750
1.250
0.812
0.750
1.188
1.688
0.750
1.688
0.750
1.688
0.750
1.625

G

1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.000
1.125
1.125
1.000
1.125
1.125
1.125
1.125
1.125
1.125
1.125
1.125
1.125
1.125
1.125
1.125
1.250
1.250
1.250
1.250
1.250
1.500
1.500
1.500
1.500

Depth
of
Recess(1)

0.122
......
......
......
......
......
0.184
......
......
......
......
......
0.184
......
......
.....
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
.....
......
......

Blind Hubs

Hub Size

X18GR170
X20GR170
X20GR180
U180
U192
X20GR192
X20GR200
3V200
3W200
3W215
X24GR215
3W226
X24GR226
X24GR232
X24GR240
Y240
30GR264
30GR292

Part Number
Approx.
Carbon Stl. Stainless Stl. Weight
SA105 SA182-F316(3) (lb.)

......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......

......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......
......

Seal
Ring
Size

Clamp
Size

C

330
554
525
764
752
505
185
635
1165
1,165
846
1,115
830
805
790
1215
1,205
785

170
170
180
180
192
192
200
200
200
215
215
226
226
232
240
240
264
292

X18
X20
X20
U
U
X20
X20
3V
3W
3W
X24
3W
X24
X24
X24
Y
30
30

21.750
24.500
24.500
25.000
25.000
24.500
25.500
26.000
29.500
29.500
29.500
29.500
29.500
29.500
29.500
31.250
33.500
33.500

4.750
5.750
5.750
7.125
7.125
5.125
5.125
6.125
7.250
7.000
6.875
6.750
6.875
6.000
6.000
7.125
6.500
4.750

20.250
23.000
23.000
23.000
23.000
23.000
23.000
24.000
27.500
27.500
27.500
27.500
27.500
27.500
27.500
29.250
31.500
31.500

8
13
24
32
72
78

20
25
31
40
40
72

B
C
D
5E
6F
G

4.750
5.500
6.750
7.500
9.250
11.500

2.750
2.625
3.250
3.500
3.750
3.500

3.750
4.500
5.750
6.500
7.750
9.500

G

Depth
of
Recess(1)

0.750
0.750
0.750
1.625
1.625
0.750
0.750
1.250
1.250
1.250
1.000
1.250
1.000
1.000
1.000
1.625
1.000
1.000

1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.500
1.625
1.625
1.625
1.625
1.625
1.625
1.625
1.625
1.625

......
......
......
......
......
......
......
......
......
......
......
......
......
.......
......
......
......
......

0.625
0.625
0.625
0.625
0.812
1.000

0.688
0.688
0.938
1.000
1.000
1.000

......
......
......
......
......
......

Dimensions (inches)
D
E
F

Heavy Duty Blind Hubs
B20
C25
D31
5E40
6F40
G72
(1)
(2)
(3)
(4)
(5)
(6)

58954
48892
128056
58261D
59149D
......

59410
......
......
59347D
95087D
......

Depth of seal ring seat recess.
Hub with recessed seal ring seat.
SA479 316/316L may be substituted based on material availability.
Carbon steel hub part numbers with “D” suffix are dual certified to SA105/SA350 LF2.
Stainless steel hub part numbers with “D” suffix are dual certified to SA182 F316/F316L.
Blind hub sizes, 6 GR and larger, are supplied with an integral lifting profile.

15

Part Numbers / Dimensions
Clamp Assemblies

F

Grayloc® connector clamp part numbers with the
WB suffix are complete with bolting. Both clamps
and bolting can be individually purchased if required. Refer to page 29 for required bolting torque.
Carbon Steel
SA266-GR3
SA487-GR 1B,
2B,4B or 4A

Clamp Materials
Alloy Steel
SA193 B7/B7M
AISI 4140
SA182-F22
SA217-WCB

G

J

C
25°

B D

A

Stainless Steel
SA182-F304
SA182-F316
SA351-CF8M
H

SA217-WC9

I

Part Number
Clamp Assembly w/Bolting

E

Part Number
Stud w/Nut

K

Dimensions (inches)

Approx.

Clamp

Carbon

Alloy

Stainless

Wt.

Carbon

Stainless

Size

Steel

Steel

Steel

(lb.)
(3)

Steel
(1)

Steel
(2)

A

1

49513WB

A90019-5WB

50163WB

3.3

70944

70359

1.687

3.187

2.813

4.250

1.375

2.250

2.625

1

1⁄

49500WB

A90043-1WB

48501WB

9.8

69001

70442

2.687

5.000

4.500

6.500

2.000

3.250

4.000

5

2

49501WB

A90148-5WB

48502WB

13.5

69002

70443

3.188

5.750

5.062

7.500

2.000

3.625

4.500

3

21⁄2-3

49502WB

A90413-6WB

48503WB

20.5

69003

70444

4.375

7.500

6.875

9.250

2.375

4.500

5.250

3

4

49503WB

A90372-4WB

48504WB

31.4

69006

70445

5.375

8.500

8.125

10.500

2.375

5.250

6.000

5

50214WB

51727WB

161959WB

44.0

69008

70437

6.875

10.250

9.750

12.375

3.000

6.125

1

2

6
8
X8(4)
10H

49508WB

A90059-2WB A90059-6WB

A90099-1WB A90099-1WB
166399WB

166399WB

A90444-9WB A90444-9WB

B

C

D

E

F

G

H

I

J

K

⁄2

3.500

2.313

1.250

⁄8

5.000

3.125

1.625

⁄4

5.250

3.500

1.813

⁄4

6.000

3.500

1.813

7

⁄8

7.000

4.063

2.063

7.375

1

8.500

4.438

2.313
2.437

68.0

69009

70446

8.375

12.625

12.000

15.000

3.500

6.625

8.750

11⁄8

9.375

4.813

125600WB

95.0

69010

70447

10.625

15.250

14.500

18.250

3.500

7.500

9.875

11⁄4

10.500

5.875

2.875

124202WB

135

69027

70449

10.625

16.250

15.125

19.000

4.125

7.500

10.750

13⁄8

11.000

6.000

3.250

49539WB

230

69028

70448

12.250

18.250

17.625

22.000

5.500

10.000

12.750

15⁄8

14.125

7.375

3.625

X10H(4)

49133WB

......

49589WB

325

69033

70438

12.250

19.500

18.250

23.500

6.500

10.000

13.500

13⁄4

16.000

7.500

3.750

12M

H90788-10

H90788-10

49540WB

295

69033

70438

14.625

22.000

20.250

25.750

5.750

10.000

14.500

13⁄4

16.000

7.500

3.750

X12M(4)

49135WB

A90445-2WB

49460WB

500

69035

70482

14.625

23.250

21.500

27.250

7.250

11.000

15.750

2

18.500

8.500

4.500

252

71763

128545

16.375

22.250

21.375

26.000

5.000

10.875

14.500

15⁄8

17.000

7.375

3.625

50268WB

405

70091

70484

17.125

25.000

23.000

29.000

6.062

10.000

16.000

2

16.500

8.250

4.250

......
......

796

69795

......

17.125

28.000

25.625

33.000

8.000

12.250

18.625

21⁄2

20.000

10.500

5.500

899

69605

137732

19.687

30.125

27.500

34.625

8.750

12.500

19.750

21⁄2

22.000

10.500

5.500

11580WB

276

71762

100666

18.625

24.000

23.625

27.750

5.000

13.000

15.625

13⁄4

19.500

7.625

3.875

H90471-3

49417WB

992

......

137732

23.687

33.875

31.250

39.000

8.750

14.000

21.500

21⁄2

22.000

11.000

5.500

......
......
......

300

H90136-18

25.750

25.875

29.500

5.000

14.375

17.500

17⁄8

21.500

8.000

4.125

106889

24.687

35.000

32.937

39.250

8.000

13.000

22.000

21⁄4

24.000

9.250

5.000

384

114791

23.625

28.312

29.125

32.187

5.000

17.125

18.750

2

24.750

8.500

4.375

100667WB

649

H90136-172

28.625

34.250

34.560

38.875

6.250

18.375

22.500

21⁄4

27.000

9.500

5.000

......
......
......

1131

......
......

28.187

37.000

36.437

41.500

8.000

20.000

23.250

21⁄2

29.500

11.000

5.500

1500

....
......
......
......
......
......

20.875

982

29.937

44.000

42.500

48.000

12.687

18.500

33.000

31⁄4

25.500

14.250

7.500

625

69026

70483

32.313

40.500

37.875

45.000

5.750

13.250

24.750

21⁄4

20.750

9.500

5.000

X14
P

49137WB

5P

138197WB H90316-10WB

S
X16

(1)
(2)
(3)
(4)
(5)

16

H90315-11WB A90648-1WB H90315-5WB

49139WB

H90847-2WB

H90328-7WB

A90649-1WB A90649-1WB

U

49142WB

X18

H90287-4

......

3V

49143WB

H90883-2

X20

49144WB

X24

H90789-3WB

......
......
......
......
......

3W

......

3Y(5)

23559WB

30(5)

49523WB

Stud material. SA193-B7; nut material, SA194-GR2 or 2H.
Stud material, SA193-B8, solution treated; nut material, SA194-GR8.
Includes weight of studs and nuts.
X clamp sizes are heavy-duty to uprate connections. Sizes of corresponding hubs and seal rings do not change when X clamps are used.
Available in three-piece, six-bolt construction only.

Part Numbers / Dimensions
Seal Rings

C
A

Grayloc® seal rings are available in a number
of carefully selected materials and are coated
to provide lubrication during makeup. For applications greater than 750° F., consult Grayloc
Products for proper selection of materials and
coatings. Seal rings manufactured from materials
or coatings other than those named may be
furnished to meet specific service conditions.

F
D

E

Part Number
Carbon Steel - NACE(2)
-50° to + 350° F(1)

Seal
Ring
Size
4
5
7
11
14
16
20
23
25
27
31
34
40
42
46
52
62
67
72
76
82
84
87
91
94
97
102
106
112
120
122
125
130
134
137
140
144
152
160
162
164
170
180
182
192
200
210
215
220
226
232
240
244

PTFE
Coated

MoS2 with
Graphite
Coated

50554N
50563N
66020N
50551N
50553N
H90026-3
50557N
50569N
50570N
50622N
50561N
50562N
66040N
151677
66041N
50623N
50566N
H90643-3
50567N
66042N
66043N
66044N
66057N
167659N
66817N
66046N
50564N
50692N
66047N
66048N
......
......
66050N
66793N
50568N
72691N
......
......
122371N
......
H90818-1N
66052N
170091N
......
......
118230N
66723N
......
......
......
......
......
......

50586N
50587N
50588N
50589N
50591N
50605N
50592N
146396N
50593N
50594N
50595N
50596N
50597N
H90364-3
66100N
50598N
50599N
H90643-26
50618N
166380N
142024N
66102N
50601N
66526N
......
H90041-4
50616N
......
50584N
159280N
66791N
......
159281N
......
50606N
159278N
......
66108N
159279N
......
H90818-2
66109N
128160N
......
......
66530N
66114N
......
50982N
......
......
......
66115N

AISI 630 (17-4 PH) SS
-452° to +450°F(1)

-452° to +750°F(1)

Dimensions (inches)

PTFE
Coated

MoS2 with
Graphite
Coated

Approx.
Weight
(lb.)

51230N
51231N
51232N
51233N
51235N
51205N
51236N
66175N
51237N
51238N
51239N
51240N
51241N
103727
51245N
51242N
51243N
H90643-1
51246N
51247N
51248N
51249N
51229N
A90368-2
66176N
66177N
66178N
......
66179N
66180N
......
......
66182N
66183N
50443N
66624N
......
66184N
72761N
......
H90818-3
......
......
......
66186N
66939N
50442N
......
......
......
......
......
50441N

51267N
51268N
51269N
51270N
51272N
66203N
51273N
51284N
51274N
51275N
51276N
51277N
51278N
51186N
66225N
51133N
51279N
H90643-15
66242N
66226N
66227N
66228N
66244N
......
66229N
66230N
51283N
66199N
66231N
66232N
66233N
......
66234N
66235N
50440N
66198N
......
66236N
66246N
......
H90818-4
66237N
66599N
......
66238N
66726N
50439N
......
72916N
......
......
......
66249N

0.04
0.05
0.06
0.08
0.31
0.41
0.50
0.54
0.70
0.70
0.76
0.89
1.28
1.35
1.58
1.65
4.00
4.50
4.95
5.58
5.16
6.72
6.97
7.10
7.24
8.00
6.08
7.00
13.44
7.42
8.00
8.50
9.00
10.00
10.50
11.00
12.50
14.00
15.50
15.80
16.00
18.00
19.00
19.00
20.00
21.00
21.00
21.50
22.00
22.50
23.75
24.00
25.00

A

C

D

E

F

0.500
0.625
0.906
1.125
1.610
1.868
2.063
2.375
2.672
3.063
3.250
3.688
4.063
4.188
4.750
5.313
6.065
6.875
7.250
7.750
8.250
8.500
8.875
9.125
9.500
9.875
10.250
10.750
11.250
12.000
12.250
12.625
13.000
13.500
13.875
14.000
14.500
15.250
16.000
16.250
16.500
17.000
18.000
18.250
19.250
20.000
21.000
21.625
22.000
22.750
23.245
24.000
24.500

1.000
1.094
1.375
1.734
2.625
2.688
3.250
3.500
4.000
4.250
4.500
5.000
5.500
6.625
6.188
6.625
7.875
8.750
9.500
10.000
10.125
11.125
11.500
13.000
12.000
12.000
12.000
12.625
14.125
13.875
14.125
14.500
15.000
15.500
16.500
16.500
17.000
17.750
18.500
18.500
18.750
19.500
20.500
20.500
22.000
22.750
24.000
24.125
25.000
25.250
26.375
27.250
27.750

0.375
0.375
0.375
0.375
0.563
0.625
0.750
0.750
0.750
0.750
0.750
0.750
1.000
1.000
1.000
1.000
1.375
1.375
1.375
1.375
1.375
1.375
1.375
1.375
1.375
1.375
1.375
1.375
1.625
1.375
1.375
1.375
1.500
1.500
1.625
1.500
1.500
1.500
1.500
1.500
1.500
1.750
1.750
1.750
1.750
1.750
2.000
2.000
2.000
2.000
2.000
2.000
2.000

0.125
0.125
0.125
0.125
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.250
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.375
0.625
0.375
0.375
0.375
0.500
0.500
0.625
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500

0.125
0.125
0.125
0.125
0.156
0.188
0.250
0.250
0.250
0.250
0.250
0.250
0.375
0.375
0.375
0.375
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.500
0.625
0.625
0.625
0.625
0.625
0.750
0.750
0.750
0.750
0.750
0.750
0.750

(1) Temperature is a major factor in the selection of the proper seal ring, but consideration also must be given to the effect the flow medium will have on the
material and coating selected.
(2) Grayloc seal rings are certified to NACE MR-01-75.

17

Other Products and Piping Accessories
Seal Rings
Transition Seal Rings

Restriction Seal Rings

In normal piping applications, the same Grayloc®
clamps are used for all schedules of a given
size pipe. The ring, however, can vary with the
schedule of pipe. Transition rings can be special
ordered to connect hubs of the same size that
have different ring seats. Transition hubs (reducing and enlarging) are recommended when
designing transition piping.

❖

Are used in restriction service to reduce flow

❖

Excellent and quick means of installing restriction plates into lines with Grayloc connectors

❖

Provides pressure drop or regulates flow where
precise metering is not required

Restriction Seal Ring

Transition Seal Ring

❖

Are used for isolating sections of pipe and
in-line blind service

Orifice Seal Rings
❖ Meets the requirements of American Gas
Association (A.G.A.)

❖

Pressure ratings available upon request

❖

Can be manufactured with replaceable
orifice plates

❖

Suitable for many normal operating conditions

❖

Integral orifice plate design

❖

High pressure applications should be
evaluated by Grayloc Products

Blind Seal Rings

Blind Seal Ring

18

Orifice Seal Ring

Other Products and Piping Accessories
A

Heavy-Duty
Connectors

E

For oilfield applications or when
pressure ratings exceed those
of common ANSI flanges and
standard Grayloc® connectors
(refer to page 29 for API flange
to Grayloc connector conversion
chart).
❖

❖

D

25°

F
C

Heavy Duty Butt Weld Hubs

Can be furnished for piping
systems of high strength
material (X-52, HY-100, T-1)
to comply with API standards
for service up to 30,000 psi
Contact a Grayloc Products
representative for additional
information on applications,
sizes, and materials

Hub
Size

Seal
Ring
Size

Clamp
Size

Hub I.D.
A

Dimensions (inches)

B 20
C 25
D 31
E 40
F 40
G 72

20
25
31
40
40
72

B
C
D
E
F or XF
G or XG

2.062
2.672
3.250
4.062
4.062
7.250

C

4.750
5.500
6.750
7.500
9.250
11.500

Approx.
Wt.
(lb.)

D(1)

E

F

3.250
3.500
4.000
4.375
4.625
5.375

3.750
4.500
5.750
6.500
7.750
9.500

0.625
0.625
0.625
0.625
0.812
1.000

10.0
13.5
22.5
28.0
45.5
50.0

(1) Hub length may increase when used with wall thickness in excess of standard pipe schedules.

D
B

25°
C
K

I

F

J

E

G
A
H
Heavy Duty Clamps
Part Number
Carbon Steel
Clamp A1S1 1045
Studs
Size
Q &T
w/Nuts(2)

B
C
D
E
F
XF
G
XG

50209G 69007
A90090-1(3) 69006
A90037-1(3) 69008
51727(3) 69008
A90059-2(3) 69009
H90662-1(3) 71548
123218(3) 69027
H90759-4(3) 136609

Dimensions (inches)
A

B

C

D

E

F

4.125
4.875
6.125
6.875
8.375
8.375
10.125
10.125

7.250
8.000
9.562
10.250
12.625
12.625
16.000
16.000

6.875
7.750
9.000
9.750
12.000
12.875
14.750
15.625

9.000
10.000
11.750
12.375
15.000
15.000
18.750
19.125

2.875
3.000
3.000
3.000
3.500
4.000
4.500
5.125

5.000
5.250
5.750
6.125
6.625
8.375
7.000
9.250

(1) Includes weight of studs and nuts.
(3) Clamp material - SA193 B7.

G

5.500
6.000
7.000
7.375
8.750
9.125
10.625
11.125

H

I

J

K

Approx.
Wt.
(lb.)(1)

0.875
0.875
1.000
1.000
1.125
1.125
1.375
1.375

6.750
7.000
8.500
8.500
9.375
11.750
11.000
13.250

3.750
4.062
4.437
4.437
4.812
4.812
6.000
6.000

2.000
2.062
2.312
2.312
2.437
2.437
3.125
3.125

27.00
29.95
42.51
52.00
73.00
86.00
133.0
190.0

(2) Stud material - SA193-B7; nut material - SA194-GR2 or 2H.

19

Other Products and Piping Accessories
Since Grayloc® connectors are
very versatile, they can be
used in many diverse applications. Some applications are
suggested in the following
examples. Special applications
may require custom design.
Contact the nearest Grayloc
Products representative for
special product assistance.

Threaded Hubs

Socket Weld Hubs

❖

N.P.T. threads in accordance
with Screw-Thread Standards
in Federal Services H-28
Handbook

❖

External threads and
industrial or customer
standards are available

Reducing Hubs

Enlarging Hubs

Pressure-Tapped Hubs
❖

Designed for socket welding
to standard and special pipe
sizes

❖

Female socket weld ends and
male pin-type socket weld
ends are available

❖

Socket weld hub lengths
are the same as the “D”
dimensions for butt
weld hubs

Streamline Bore Hubs

❖

Unobstructed bore design

❖

Manufactured for sanitary
processes

20

❖

Joins pipe of one diameter
to pipe, vessel nozzles,
or similar fittings of a
different diameter

❖

Eliminates the need for
concentric reducers

Adapters
❖

Used for instrumentation,
chemical injection, flushing
or sampling.

❖

Eliminates the problem of
drilling and tapping after the
system is assembled

❖

Can be threaded to customer
specification, e.g., N.P.T.
and MC
❖

Used to join different-sized
Grayloc hubs already fabricated to the pipe

❖

Equivalent of concentric reducers in a welded system

Other Products and Piping Accessories
Fittings
To reduce space and make
complicated piping assemblies
easier to install and maintain,
a full line of Grayloc® tees and
ells are available.
❖

Manufactured from closed
die / block forgings and
castings

❖

Minimum centerline-to-face
dimensions

❖

D

A

A

B

B

C

C
B

B

Crosses are available
upon request

Hub
Size

Part Number (2)
Tee
SA105 SA182-F316
SA105

Ell
SA182-F316

Seal
Ring
Size

Clamp
Size

A

Dimensions (inches)
B
C

D

Approx.
Weight (lb.)
Tee
Ell

1 GR 4
1 GR 5
1 GR 7
1 GR 11

54791
54792
54793
54794

54795
54796
54412
54797

54798
151698
H90284-7
54801

54804
54805
54414
54807

4
5
7
11

1
1
1
1

0.500
0.625
0.906
1.125

3.000
3.000
3.000
3.000

2.000
2.000
2.000
2.000

6.000
6.000
6.000
6.000

3.5
3.5
3.0
3.0

2.5
2.5
2.0
2.0

11⁄2 GR 11
11⁄2 GR 14

54169
54173

54241
54242

54106
54107

54153
54156

11
14

11⁄2
11⁄2

1.125
1.610

4.000
4.000

3.125
3.125

8.000
8.000

19
17

12
10

2 GR 11(1)
2 GR 14
2 GR 20

54355
54178
54179

54367
54243
54244

54377
54114
54117

54386
54162
54129

11
14
20

2
2
2

1.125
1.610
2.063

4.063
4.000
4.000

3.625
3.625
3.625

8.125
8.000
8.000

20
18
16

13
11
10

21⁄2 GR 20
21⁄2 GR 25

54180
54196

54245
54246

54118
54119

54163
54145

20
25

21⁄2-3
21⁄2-3

2.063
2.672

5.375
5.375

5.000
5.000

10.750
10.750

65
53

33
26

3 GR 20
3 GR 25
3 GR 27

54180
54196
54197

54245
54246
54247

54118
54119
54122

54163
54145
54146

20
25
27

21⁄2-3
21⁄2-3
21⁄2-3

2.063
2.672
3.063

5.375
5.375
5.375

5.000
5.000
5.000

10.750
10.750
10.750

65
53
45

33
26
21

4
4
4
4

GR
GR
GR
GR

25
31
34
40

54360
54356
54357
54358

54369
54354
54316
54352

54379
H90635-1
54126
54125

54388
54168
154033
54174

25
31
34
40

4
4
4
4

2.672
3.250
3.688
4.063

6.000
6.000
6.000
6.000

6.000
6.000
6.000
6.000

12.000
12.000
12.000
12.000

78
65
55
40

45
40
35
30

5
5
5
5
5

GR
GR
GR
GR
GR

31
34
40
46
52

54940
54941
147274
54942
54232

54370
54371
54233
54372
54373

54380
54381
54123
54382
54144

54389
54390
54147
54391
54213

31
34
40
46
52

5
5
5
5
5

3.250
3.688
4.063
4.750
5.313

8.000
8.000
8.000
8.000
8.000

7.500
7.500
7.500
7.500
7.500

16.000
16.000
16.000
16.000
16.000

200
185
175
145
120

160
150
140
120
90

54943
54944
54203
54206

54375
54376
54253
54254

54384
54385
H90284-6
54130

54393
54394
54181
54182

40
46
52
62

6
6
6
6

4.063
4.750
5.313
6.063

9.125
9.125
9.000
9.000

9.250
9.250
9.250
9.250

18.250
18.250
18.000
18.000

335
300
275
230

275
250
230
190

6 GR 40(1)
6 GR 46(1)
6 GR 52
6 GR 62

(1) Hub with recessed seal ring seat.
(2) For small quantity orders, items may be furnished from block forgings instead of contoured forged profiles as shown above. Part numbers for block
shaped tees/ells may be different than those shown above.

21

Other Products and Piping Accessories
Special Connectors
Shrouded Bore Connector
The Grayloc® seal ring can be protected in
environments where thermal cycling occurs
and in erosive service. To achieve this protection,
non-erosion rings are recommended to shroud
the bore. The shroud consists of two insertable
pieces usually made from similar material as the
hub. However, it can also be machined integral to
the hub, which eliminates the insertable ring.

Shroud

Shrouded Bore Connector

Insulating Connector
Grayloc insulating connectors are used in piping
systems to prevent galvanic action or where it is
necessary to electrically isolate one section of
pipe. Grayloc clamps and seal rings are selectively coated with a specialty polymer coating. The
connectors are tested before shipment to assure
a minimum resistance of 200 megohms at 500
volts DC.

Seal Ring
Entirely Coated

Orifice Union

Inside Clamp
Profile Coated

Designed to accommodate “flange-type” pressure
taps and universal-type orifice plates.
❖

Orifice plate held in position by hold down
screws

❖

“Flange-type” pressure taps, perpendicular to
the bore, are drilled directly into hubs

❖

Pressure taps are usually 1/2" N.P.T., but can
vary in size and type according to customer
specifications

❖

Only the orifice plate is exposed to the flow

Insulating Connector

Orifice Seal Ring

The Grayloc seal ring and orifice plate can be
manufactured as an integral unit assuring a leakfree seal in conjunction with a quick disconnect
measuring device.

Orifice Union
22

Other Products and Piping Accessories
Jacketed Connectors

Streamline
Bore Design

Face Gasket

Flow-Through
Jacketed Connector
❖

Unobstructed (Streamline)
bore design

❖

Provides in-line passage of
the jacket fluid through the
connector

❖

Metal seal for core pipe prevents contamination of fluid or
leakage to the atmosphere

❖
❖

External jacket seal is formed
by a face seal gasket

Grayloc
Seal Ring

Butt weld Jacketed
Flow-Through Hub

Alignment Pin

Uniform heat transfer
Clamp

Bolting

Flow-Through Jacketed Connector

Non Flow-Through
Jacketed Connector
Grayloc non flow-through connectors are designed to accomodate both core and jacket piping.
These connectors can be used
with jumper piping or double pipe
heat exchangers. A streamline
bore is also a standard for these
connectors.

Core Pipe

Streamline
Bore Design

Jacket Pipe

Non Flow-Through Jacketed Connector

23

Other Products and Piping Accessories
Remotely Operated Connectors
The Grayloc® remotely operated connector is a field-proven
mechanical connector used
in hazardous environments,
personnel restricted areas,
and automated (batch-type)
operations. Like the standard
Grayloc connector, the remotely
operated connector has metalto-metal seal integrity.

Operation

Design Technology

❖

Simple, reliable trunnion and
screw mechanism

❖

Zero leak rate (10-6 atm
cc/s Helium)

❖

Single drive screw adaptable
to different power drives

❖

Quick disconnect, opens /
closes in seconds

❖

Self-supporting base plate

❖

❖

Retained seal ring

Compatible with hydraulic,
pneumatic, or electric power

❖

Can be manually operated

❖

Unitized design

Pipe O.D.
Pipe I.D.

Top View

24

Side View

Other Products and Piping Accessories
Grayloc® Compact Flanges
❖

Smaller and lighter than
standard ANSI/API flange

❖

Using the self-energizing
seal ring, the flange has a
higher tolerance to vibration,
temperature extremes,
and external loading

❖

Off-the-shelf studs and nuts

❖

The rating of a flanged connection can be upgraded if
a Grayloc seat is machined
in the face and bore of the
connection to accept the
Grayloc seal ring

Pipe

18" - 1500 Class GCF weldneck
O.D. 31"
Weight 680 lbs.

18" - 1500 Class ANSI weldneck
O.D. 36"
Weight 1625 lbs.

Grayloc Seal Ring

Grayloc Compact Flange (GCF)
25

Other Products and Piping Accessories
Nozzles
Grayloc® nozzles are designed
for pressure vessels that require
longer nozzle projections.
❖

Manufactured with extra wall
thickness to allow welding
directly to the vessel with no
additional reinforcement

❖

❖

For corrosive environments, seats and nozzle bores can be
protected with weld-deposited overlays or liners

❖

Sealing surfaces of standard carbon and low alloy steel nozzles
are protected by electroless nickel coating

❖

Standard lengths and sizes are listed in the following chart, other
configurations are available based on application.

Stub end may be saddled
or otherwise machined to
match the contour of the
vessel wall

❖

B
T

Available in most
machinable materials

Connector
Size

C

Part Number
SA105
SA182-F316(2)

A

Dimensions (inches)
B(3)
C

Approx.
Weight
(lb.)

Ring
Size

Clamp
Size

A

4
5
7
11

1
1
1
1

0.500
0.625
0.906
1.125

9.000
9.000
9.000
9.000

2.000
2.000
2.000
2.000

0.750
0.688
0.547
0.438

14
13
12
11

T

1 GR4
1 GR5
1 GR7
1 GR11

54938
54423
54848
54447

100757
H90389-3

11⁄2 GR11(1)
11⁄2 GR14

54450
54451

54650

......

11
14

11⁄2
11⁄2

1.125
1.610

9.000
9.000

3.125
3.125

1.000
0.758

17
15

2 GR11
2 GR14
2 GR20

54486
54454
54453

54630
54605
54629

11
14
20

2
2
2

1.125
1.610
2.063

9.059
9.000
9.000

3.625
3.625
3.625

1.250
1.007
0.781

24
21
18

21⁄2 GR20
21⁄2 GR25

54928
54458

54632
54631

20
25

21⁄2-3
21⁄2-3

2.063
2.672

9.000
9.000

5.000
5.000

1.468
1.164

55
48

3 GR20
3 GR25
3 GR27

54928
54458
54457

54632
54631
54904

20
25
27

21⁄2-3
21⁄2-3
21⁄2-3

2.063
2.672
3.063

9.000
9.000
9.000

5.000
5.000
5.000

1.468
1.164
0.968

55
48
41

4 GR25
4 GR31
4 GR34
4 GR40

54489
54461
54460
54459

54635
54636
54911
54973

25
31
34
40

4
4
4
4

2.672
3.250
3.688
4.063

12.000
12.000
12.000
12.000

6.000
6.000
6.000
6.000

1.664
1.375
1.156
0.968

78
68
60
52

5 GR31
5 GR34
5 GR40
5 GR46
5 GR52

......
......
......
......
......

......
......
......
......
......

31
34
40
46
52

5
5
5
5
5

3.250
3.688
4.063
4.750
5.313

12.000
12.000
12.000
12.000
12.000

7.500
7.500
7.500
7.500
7.500

2.125
1.906
1.718
1.375
1.093

122
113
106
90
75

6 GR40(1)
6 GR46(1)
6 GR52
6 GR62

......
......

......
......

54463

56121

......

......

40
46
52
62

6
6
6
6

4.063
4.750
5.313
6.063

12.125
12.125
12.000
12.000

9.250
9.250
9.250
9.250

2.593
2.250
1.968
1.593

184
168
153
130

......
54624

(1) Hub with recessed seal ring seat. (2) SA479TP316 may be substituted based on material availability.
(3) Nozzle lengths can be supplied based on customer requirements.

26

Other Products and Piping Accessories
Thermowells
Grayloc® thermowell one-piece,
solid construction assemblies
are smaller and lighter than
flanged thermowell assemblies.
Metal-to-metal sealing makes
Grayloc thermowell assemblies
capable of higher pressures
and temperatures.

Hinged Vessel
Closures
Grayloc hinged closures are
used as manways on pressure
vessels in many industrial
applications. They have all the
design features of the basic
Grayloc connector plus the
advantage of fixed mounting
onto the vessel.

Thermowell

Seal Ring

❖

Effective, dependable, convenient, simple makeup

❖

Clamp hanger assembly
supports the clamp segments
that remain in position
around the outside of the
nozzle when fully open

❖

Blind hub can be hinged
vertically or horizontally for
maximum accessibility

Clamp

Vessel

Hub / Nozzle

❖

Blind hub swings easily into
position with no alignment
or lifting of heavy parts

❖

Seal ring is retained with
either the blind hub or nozzle
to protect its sealing surfaces
when the closure is open

❖

Manufactured to conform
to the requirements of ASME
Codes, Sections I and VIII

❖

If required, complete design
evaluations, ASME Code
stamping, ASME partial data
report and detailed stress
analysis can be furnished

Thermowell

Blind hub/hinge pin assembly

Open position

Handle

Closed position

Top View

Hinged Vessel Closure

27

Other Products and Piping Accessories
Studded Vessel
Closures
Grayloc® studded vessel
closures offer cost savings and
design advantages for manufacturers of pressure vessels,
pump, and heat exchangers.
❖

❖

Sizes range from 8" to 60"
in diameter and from 1,000
to 32,000 psi operating
pressure
Variations in diameter, size,
and spacing of studs on standard sizes can be specified,
as well as other closure sizes
and pressure ratings that
require special design

❖

❖

❖

❖

❖

In some applications, stud
tensioners are not required

❖

Seal surfaces of unlined
closures are protected from
oxidation by electroless
nickel plating unless otherwise specified

Unless specified otherwise,
closures comply with the
ASME Boiler and Pressure
Vessel Code, Section VIIl
and can be designed in
accordance with Section I
or customer-specified
requirements

❖

Corrosion-resistant liners
and protective weld overlays
are available

Seal ring is recessed to ease
assembly and prevent damage from overtightening

❖

Varied weld end preparation
available to suit fabrication
requirements

Typical studded vessel
closure materials include
SA105, SA350 LF2, SA182
F22 and SA182 F316.
Closures are designed base
on the adjoining pressure
vessel material

Studs through 4" are furnished with heavy-duty nuts, and
larger studs are furnished
with sleeve nuts
35" O.D.

27" O.D.

Design: Type: Delta Seal Gasket
Weight: Approx. 6800 lbs.
Bolting: (16) 23⁄4" bolts

12"

Design: Type: Grayloc Studded Closure
Weight: Approx. 2700 lbs.
Bolting: (12) 23⁄4" bolts

57⁄8"

21"

21"

Grayloc Seal Ring

16" I.D.

28

Conversion and Torque Requirements
API Flange to Grayloc® Connector Conversion
Nominal Size & Bore
of API Flange
(inches)

Maximun
Working Pressure
(psi)

Corresponding
Grayloc
Connector

Nominal Size & Bore
of API Flange
(inches)

Maximun
Working Pressure
(psi)

Corresponding
Grayloc
Connector

113⁄16

10,000-6BX
15,000-6BX

B16
B16

9

21⁄16

2,000-6B
3,000-6B
5,000-6B
10,000-6BX
15,000-6BX

B20
B20
B20
B20
B20

2,000-6B
3,000-6B
5,000-6B
10,000-6BX
15,000-6BX

10H91
10H91
10H91
12M91
X12M91

11

2,000-6B
3,000-6B
5,000-6B
10,000-6BX
15,000-6BX

C25
C25
C25
C25
C25

2,000-6B
3,000-6B
5,000-6B
10,000-6BX
15,000-6BX

12M112
12M112
12M112
S112
*

135⁄8

2,000-6B
3,000-6B
5,000-6B

D31
D31
D31

2,000-6B
3,000-6B
5,000-BX
10,000-6BX

R137
R137
S137
5V137

163⁄4

1

3 ⁄16

10,000-6BX
15,000-6BX

D27
D27

2,000-6B
3,000-6B
5,000-6BX
10,000-6BX

T170
V170
3V170
*

41⁄16

2,000-6B
3,000-6B
5,000-6B
10,000-6BX
15,000-6BX

E40
E40
E40
F40R
F40R

183⁄4

5,000-6BX
10,000-6BX

*
*

203⁄4

3,000-6B

V210

21 ⁄4

51⁄8

10,000-BX

F52

71⁄16

2,000-6B
3,000-6B
5,000-6B
10,000-6BX
15,000-6BX

G72
G72
10H72R
10H72R
X12M72R

2,000-6B
5,000-6BX
10,000-6BX

*
*
*

29⁄16

31⁄8

1

* Please consult Grayloc Products for special Grayloc sizing.
Abbreviations: R, recessed seal ring seat.
Notes: 1. 2,000-5,000 psi use 60 ksi minimum yield material for hub.
2. 10,000-15,000 psi use 75 ksi minimum yield material for hub.
3. 80 ksi minimum yield material required for clamp.

Bolting Torque Required for Grayloc Clamps*
Stud Bolt
Size

Stud Bolt
Length (inches)

Clamp Size

Average
Torque (ft.-lb.)

⁄2-13UNC-2
⁄8-11UNC-2
3
⁄4-10UNC-2
7
⁄8-9UNC-2

31⁄2
5
51⁄4, 6
7, 63⁄4

1
11⁄2
2, 21⁄2, 3
4, C, B

17
35
55
90

1-8UNC-2
11⁄8-8N-2
11⁄4-8N-2
11⁄8-8N-2
13⁄8-8N-2
15⁄8-8N-2
13⁄4-8N-2
17⁄8-8N-2

81⁄2
93⁄8
101⁄2
113⁄4
11
141⁄4, 141⁄8, 17
16, 191⁄2
211⁄2

5, D, E
6, F
8
XF
X8, G, XG
H, 10H, X14
X10H, 12M, X16
X18

140
205
290
330
390
630
870
1170

2-8N-2
21⁄4-8N-2
21⁄2-8N-2
23⁄4-8N-2

161⁄2, 181⁄2, 243⁄4
27, 203⁄4, 24
22, 31, 291⁄2, 20
283⁄4

P, X12M, X20
X24, 30, 3V
S, U, 32, 36, 3W, 5P
Y

1300
1870
2570
3500

31⁄4-8N-2

351⁄2

40

7100

1

5

* Applies to two-piece, four-bolt clamps.

29

Installation and Maintenance Instructions
General Information
A complete Grayloc connector consists of two hubs, one
seal ring, one set of clamps, stud bolts, and sphericalfaced nuts.
®

Grayloc hubs are furnished with hub protectors that should
be removed only when the hubs are being welded in place,
stress relieved, or when the connection is being assembled.
Fabrication
Grayloc hubs may be fabricated to piping or other component equipment by established welding procedures. Initial fit
up and alignment tolerances normally used in the fabrication
of ANSI flanges are also acceptable for the Grayloc hub.
During welding, care should be taken to protect the hub
seat from damage such as scratching and weld spatter.
When required, stress relieving of carbon and low alloy steel
hubs should be done in compliance with applicable industry
codes and requirements. Seats that are nickel-coated must
be clean prior to being placed in the furnace.
Before Assembly
The Grayloc seal ring does not seat until the connection
is fully tightened; therefore, a small clearance, or standoff,
between the ring rib and hub face should be observed when
the ring is placed into a mating hub. If no standoff is present,
use a new seal ring.
Clean all lubricants and foreign matter from the hub seating
surfaces before installation. Use a non-abrasive material to
clean the seal rings of all foreign matter. Normally, all seal
rings have a coating or plating (cadmium, PTFE, MoS2)
which acts as a lubricant during make-up. In some applications where uncoated/unplated seal rings are used, a light
film of clean lubricant is recommended.
When applying lubricant, take special care to ensure that
no solid or foreign particles are present in the lubricant.
Also, take care to prevent mechanical damage to the seal
ring and the hub sealing surfaces.
Before assembly, the hubs must be aligned to allow engagement of the seal ring lips to the hub sealing surfaces. This
will ensure proper engagement of the hub and clamp segments. For misaligned systems, it is acceptable to apply
external loads to the mating piping (using jacks, comealongs, etc.) to align the hubs prior to assembly.
Assembly
1. Align the hubs so that the seal ring can be installed
between the hubs.
2. Install the seal ring in the sealing surface of the hubs.
The seal ring should rock slightly; i.e., the seal ring rib
should not be able to firmly contact the hub face. If it
does not rock, use a new seal ring.
3. Install the clamps around the hubs. Apply lubrication to
the hub-clamp contact area to reduce friction; this will
aid assembly.
4. Insert the stud bolts into the bolt holes of the clamp ears.
Install the nuts, ensuring that the spherical surfaces of the
nuts and the clamp are in proper position for mating.

30

Lubrication of the bolting and the spherical faces of the
nuts and the clamp is recommended.
5. Tighten the bolting in a criss-cross pattern (i.e., bolt #1,
#3, #2, #4) to keep the spacing between the clamp
halves approximately equal.
6. To properly preload the Grayloc connector against gasket
loads, fluid pressure loading, thermal shock loading, and
normal pipe reaction loads, the torque values in the table
on page 29 are recommended. Note that torque wrenches are not required, but are recommended for large bolt
sizes (15⁄8" and larger) to ensure that the minimum
preload values are met. Assembly should include jarring
the clamps during the bolting procedures, i.e., a sound
blow to the back of the clamp with a soft hammer (torque,
jar, torque, jar, etc.) until bolt torque does not change
after jarring.
7. At full make-up, the hub faces will shoulder flush against
the seal ring rib. The seal ring rib will prevent overtorquing
from causing seal damage, but to prevent permanent
damage from distortion to the other components of the
connection, the maximum torque applied to the connection should not be more than twice the values shown in
the table. For extreme misalignment and/or extreme piping loads, torque values 11⁄2 to 2 times the table values
are recommended. Lubricated bolting should be used to
assemble the Grayloc connector.
Disassembly
Before disassembling the Grayloc connector, bleed all
pressure from the line. When removing the clamp, first
loosen the bolting and the clamp set from the hubs to allow
the safe release of any trapped pressure. Then, remove the
bolting completely.
Maintenance
Special maintenance is not required for a Grayloc connector
that has been properly assembled. However, when disassembling a connector, check the seal ring for standoff prior
to reassembly and visually inspect the hub seats for uniformity and freedom from burrs and deep scratches. These
irregularities on ring seal surfaces could cause leakage.
Remove scale, rust, burrs, or deep scratches from a ring
seat by lightly polishing with a fine steel wool or crocus
cloth around the seat circumference to ensure uniform
blending-in of the reworked area. Never lap the hub seat
with the seal ring; this practice will damage both the ring
and the seat and prevent an effective seal.
The connector should not be tightened while under pressure
loading or severe mechanical loads. Do not weld on Grayloc
clamps, bolting or seal rings without consulting Grayloc
Products.
All components of the Grayloc assembly should be obtained
only from Grayloc Products or one of its authorized
licensees. Do not substitute non-Grayloc brand parts in
Grayloc connectors. Substituting of parts other than Grayloc
brand components voids all warranties.

Standard Terms and Conditions
STANDARD TERMS AND CONDITIONS
FOR SALES AGREEMENTS APPLICABLE TO PRODUCTS/SERVICES
SUPPLIED BY GRAYLOC PRODUCTS, L.L.C. (“GRAYLOC”) TO PURCHASER
1.

1.2

1.3

2.

6.

Acceptance
1.1

Acceptance of any offer to sell by GRAYLOC is limited to Purchaser completely and exclusively accepting all terms and conditions hereof ("Terms"). This Agreement constitutes the entire agreement between the parties and takes precedence over any
and all previous verbal or written arrangements in connection with this Agreement. Any deletions, modifications, alterations of
or additions to the Terms, to be binding, shall be in writing and signed by an authorized representative of GRAYLOC and the
Purchaser. Without limiting the foregoing, it is expressly acknowledged that any Purchaser document received is for order
identification convenience only. Any and all provisions on the face or reverse side of any purchase order, or service order,
which Purchaser may send to GRAYLOC in connection herewith are expressly objected to by GRAYLOC and waived by
Purchaser and made inapplicable to any such purchase, unless both parties expressly agree in writing to include any such
terms and conditions in this Agreement.

8.

Limited Warranties
GRAYLOC hereby warrants that all products manufactured by GRAYLOC are free of defects of material and workmanship for a period of twelve (12) months from the date shipped, providing that the products are used in the service specified and are properly
installed, used and maintained and not altered after initial delivery, corrosion and erosion and normal wear and tear excepted.
Purchaser shall give written notice to GRAYLOC of any defects within thirty (30) days of their discovery by Purchaser, within said
twelve (12) month period, with a report detailing failure and defects. GRAYLOC reserves the right to require prepaid return of the
allegedly defective product to establish a warranty claim. GRAYLOC will, at its option, repair any product found defective during the
warranty period without charge, replace the product F.O.B. manufacturing facility, or refund the purchase price paid for the products
upon return to GRAYLOC. GRAYLOC shall not be responsible for retrieving or removing defective items (whether manufactured by
GRAYLOC or not), or any part thereof, or for reinstalling the same when repaired or replaced, or for any cost incurred in connection
with such retrieval, removal or reinstallation. In the case of items or parts not wholly of GRAYLOC's manufacture, but supplied by
GRAYLOC, GRAYLOC's liability shall be limited to assisting Purchaser in enforcing the warranty of the manufacturer of the items or
parts. GRAYLOC will not be responsible for repairs made by other than GRAYLOC without prior written consent. This warranty is
EXCLUSIVE AND, EXCEPT AS STATED HEREIN, GRAYLOC MAKES NO EXPRESS OR IMPLIED WARRANTIES AS TO ANY
MATTER WHATSOEVER, INCLUDING, WITHOUT LIMITATION, THE WARRANTY OF MERCHANTABILITY AND FITNESS FOR A
PARTICULAR USE, WHICH EXCEED THE FOREGOING WARRANTY. PURCHASER'S SOLE REMEDY AND GRAYLOC'S SOLE
OBLIGATION ARISING OUT OF OR IN CONNECTION WITH DEFECTS IN MATERIALS, WORKMANSHIP OR SERVICES, WHICH
ARE BASED ON WARRANTY, CONTRACT NEGLIGENCE, STRICT LIABILITY OR OTHERWISE, SHALL BE THOSE STATED IN
THIS SECTION. The Purchaser acknowledges that any affirmation of fact or promise made by GRAYLOC shall not be deemed to
create an express warranty, that Purchaser is not relying on GRAYLOC's skill or judgment in selecting or furnishing a system suitable
for any particular purpose, and there are no warranties which extend beyond the description on the face hereof.

3.

7.

Purchaser's acceptance is hereby expressly limited to the Terms, and acceptance of any part of the products covered hereunder shall be deemed to constitute such acceptance. (If this order constitutes an acceptance of an offer, such acceptance is
expressly made conditional on Purchaser's assent to the Terms and any additional or different terms contained herein, and
acceptance of any part of the products covered hereunder shall be deemed to constitute such assent.) GRAYLOC may provide the products from its affiliated company, in which event these Terms will apply. Purchaser may not assign this
Agreement without the prior written consent of GRAYLOC.
For any item of GRAYLOC equipment leased to Purchaser, GRAYLOC’s Standard Terms and Conditions of Equipment Lease
shall apply, which terms and conditions are incorporated herein by reference.

Transportation
Unless otherwise specified in GRAYLOC's sales quotation, transportation charges, including transportation documents and contracts
with carriers, shall be based upon the point of manufacture and shall be paid by Purchaser.

9.

Delivery and Title
7.1

Point of Delivery. GRAYLOC agrees to deliver the equipment to Purchaser ex-works (GRAYLOC manufacturing facility)
unless otherwise agreed in writing for an order. Risk of loss of the equipment shall pass to Purchaser upon delivery. Title to
the equipment shall pass when the full purchase price for the equipment has been received by GRAYLOC. GRAYLOC shall
maintain a purchase money security interest in the equipment for any portion of the purchase price not paid at the time of
delivery and shall retain this interest until GRAYLOC has received the full purchase price for the equipment.

7.2

Delivery Dates. Delivery dates shall be interpreted as estimates. Delivery commitments are given as accurately as information
permits, and reasonable efforts will be made to make deliveries as scheduled. All shipping dates are based upon receipt of
complete orders, performance of routine quality control and Purchaser's inspection/testing requirements which, if the normal
production sequence is affected, will be considered as extending shipping dates appropriately. GRAYLOC assumes no liability for damage arising out of failure to deliver materials as scheduled.

Cancellation or Rescheduling of Orders
8.1

Orders once placed and accepted, may be canceled only with GRAYLOC's written consent and upon terms which will save
GRAYLOC from loss. No products may be returned for credit, warranty claim or adjustment without the written consent of
authorized GRAYLOC employees.

8.2

GRAYLOC may, but is not obligated to, accept a written request by Purchaser to delay shipment of the products. If rescheduling is accepted by GRAYLOC, Purchaser shall pay any additional costs incurred by the delay and the price for the balance
of the order shall be adjusted to reflect prices and costs in effect at time of actual shipment.

Taxes, Licenses or Other Charges
9.1

All taxes or other charges imposed by law on the sale or production of goods or the performance of services under this
Agreement, including, but not limited to, those from all governmental authorities, as well as all foreign taxes, surcharges, customs duties, consular fees, assessments or other applicable charges, if any, shall be borne by the Purchaser, unless the law
specifically provides that such payment must be borne by GRAYLOC. Purchaser shall pay for and hold GRAYLOC harmless
from all such governmental charges.

9.2

Purchaser shall, at its own expense, obtain all licenses, permissions or authorizations to use, purchase, export or import the
products, as may be required by any governmental authority. The procurement of consular fees for legalizing invoices, stamping Bills of Lading or other such documents and declarations required by the law of any country or destination, are not included in quotations or selling prices. Although it is not GRAYLOC's policy to make such arrangements, if instructed by the
Purchaser and agreed to in writing by GRAYLOC, GRAYLOC will make arrangements for any consular documents and declarations needed, as agents of the Purchaser. GRAYLOC assumes no liability whatsoever as a result of making such arrangements and all costs and liability shall be borne by the Purchaser.

Liability
10. Services
3.1

Mutual Indemnities. GRAYLOC agrees to defend, indemnify, release and hold Purchaser Group harmless from and against
all costs, damages, losses, fines, penalties, expenses (including court costs and reasonable attorney’s fees) and liabilities
(except for Environmental Liabilities) arising out of claims, demands, or causes of action brought by any person or entity for
bodily injury to or death of, any employee of GRAYLOC or contractor, subcontractor, agent, invitee, parent, co-owner, co-venturer, co-lessor, partner, subsidiary, or affiliate of GRAYLOC, or for damage to or loss of property owned or leased (except
property leased to Purchaser) by GRAYLOC (“Grayloc Group”), which injury, death, damage, liability, claim, demand or loss
arises out of or is incidental to the performance of this Agreement, REGARDLESS OF WHETHER CAUSED BY THE NEGLIGENCE, IN ANY FORM, OR FAULT, OR STRICT LIABILITY OF ANY MEMBER OF PURCHASER GROUP, OR ANY
OTHER PERSON NATURAL OR OTHERWISE, AND/OR THE UNSEAWORTHINESS OF ANY VESSEL, ANY DEFECT IN
ANY PREMISES OR VESSEL WHETHER PRE-EXISTING THIS CONTRACT OR NOT AND WHETHER SUCH DAMAGES,
LOSSES, INJURIES, LIABILITIES, CLAIMS OR DEMANDS ARISE FROM TORT, CONTRACT, QUASI-CONTRACT OR
OTHERWISE. Purchaser agrees to defend, indemnify, release and hold GRAYLOC Group, harmless from and against all
costs, damages, losses, fines, penalties, expenses (including court costs and reasonable attorney’s fees) and liabilities arising
out of claims, demands, fines, penalties or causes of action brought by any person or entity for bodily injury to or death of, any
employee of Purchaser, contractor (other than GRAYLOC), subcontractor, agent, invitee, parent, co-owner, co-venturer, colessor, partner, subsidiary or affiliate of Purchaser (“Purchaser Group”), or for damage to or loss of property owned or leased
by Purchaser Group, which injury, death, damage, liability, claim, demand or loss arises out of or is incidental to the performance of this Agreement, REGARDLESS OF WHETHER CAUSED BY THE NEGLIGENCE, IN ANY FORM, OR FAULT, OR
STRICT LIABILITY OF ANY MEMBER OF GRAYLOC, OR ANY OTHER PERSON NATURAL OR OTHERWISE AND/OR
THE UNSEAWORTHINESS OF ANY VESSEL, ANY DEFECT IN ANY PREMISES OR VESSEL WHETHER PRE-EXISTING
THIS CONTRACT OR NOT AND WHETHER SUCH DAMAGES, LOSSES, INJURIES, LIABILITIES, CLAIMS OR DEMANDS
ARISE FROM TORT, CONTRACT, QUASI-CONTRACT OR OTHERWISE. To the extent that the laws of the State of Texas
are applied to this Agreement, the parties agree that the foregoing indemnity obligations shall be supported by equal amounts
of insurance, or qualified self-insurance maintained by GRAYLOC and Purchaser, respectively, which shall be greater than the
amounts of insurance set forth in Article 4.

The indemnification provided hereunder shall be effective to the maximum extent permitted by applicable law. The parties agree that
in the event any law is enacted in any state, the laws of which are applied to this Agreement that limits in any way the extent to which
indemnification may be provided to an indemnitee, then this Agreement shall automatically be amended to provide that the indemnification provided hereunder shall extend to the maximum extent permitted by applicable law.
3.2

4.

Environmental Liability. Notwithstanding any other provision(s) contained in this Agreement and specifically in this Article 3,
Purchaser assumes sole responsibility for and shall defend, indemnify and hold GRAYLOC harmless from and against any
and all claims, demands, suits, judgments, damages, losses, fines, penalties and causes of action of every nature, kind and
character for damage to or loss of the hole, including the casing and all pipe and tubulars and equipment and tools therein,
loss of or impairment of any property right in and to any oil, gas, water or other mineral substance, for all spills, leakage,
blowouts, above or below ground, or uncontrolled flow(s) of oil, gas and water and all other substances, including the damages caused by said leakage or uncontrolled flow(s) of oil, gas, water and all other substances, including the control and
removal thereof, pollution and/or contamination, costs of removal of debris or damage to or loss of the well, damage to or loss
of the reservoir, damage to or loss of the production and/or formations (the “ Environmental Liabilities”) REGARDLESS OF
WHETHER CAUSED BY THE NEGLIGENCE, IN ANY FORM, OR FAULT, OR STRICT LIABILITY OR ABSOLUTE LIABILITY OF ANY MEMBER OF GRAYLOC GROUP, OR ANY OTHER PERSON NATURAL OR OTHERWISE AND/OR THE
UNSEAWORTHINESS OF ANY VESSEL, ANY DEFECT IN ANY PREMISES OR VESSEL WHETHER PRE-EXISTING THIS
CONTRACT OR NOT AND WHETHER SUCH DAMAGES, LOSSES, LIABILITIES, CLAIMS OR DEMANDS ARISE FROM
TORT, CONTRACT, QUASI-CONTRACT OR OTHERWISE.

3.3

Incidental and Consequential Damages. Notwithstanding anything to the contrary in this Agreement, in no event shall either
party hereto be liable for any liquidated, special, incidental or consequential damages of any type, including, but not limited to,
loss of business, loss of profits, costs of capital or costs connected with interruption of operation, loss of use or loss of production, including, but not limited to delayed production, from any cause whatsoever.

3.4

Limitation of Liability. Notwithstanding anything to the contrary in this Agreement, except for liabilities governed by the laws of
the State of Texas arising from the mutual indemnity obligations of the parties under Article 3.1 hereinabove, GRAYLOC’s
total liability, in tort, contract or otherwise, to Purchaser Group, under or relating in any way to this Agreement or to any materials, equipment or services provided hereunder shall in no event exceed a single aggregate limit equal to the Agreement
price.

Upon the request of the Purchaser, GRAYLOC will provide appropriate services and/or technical information, as available, regarding
the products and their uses, and will use reasonable efforts to provide personnel to assist the Purchaser in effecting field installations.
The Purchaser acknowledges that any such information, service or assistance so provided, whether with or without charge, shall be
in an advisory capacity only. The Purchaser further agrees that GRAYLOC assumes no liability for any damage or loss at any location arising out of, resulting from or caused, in whole or in part, by any information, service, advice or assistance provided by GRAYLOC, its agents, assigns, employees or subcontractors.
11. Packaging/Insurance
11.1

When obligated to do so in the specifications, GRAYLOC shall attempt to pack and prepare all shipments in such a manner as
to prevent breakage, rust or deterioration in transit. GRAYLOC does not, however, guarantee against such damage and the
risk of any damage to the products in transit shall be borne by the Purchaser at all times.

11.2

Unless requested by the Purchaser and agreed to in writing by GRAYLOC, no shipments are insured by GRAYLOC against
damage or loss in transit and GRAYLOC assumes no liability whatsoever in regard to the obtaining of such insurance.

12. Changes and Modifications in Design
GRAYLOC hereby reserves the right to change or modify the specification and construction of any of its products without incurring
any obligation to furnish or install such changes or modifications on products previously or subsequently sold.
13. Patent Warranties
The Purchaser acknowledges that GRAYLOC does not warrant that any of the materials, equipment or apparatus sold by it, if used
or sold in combination with any other equipment, or used in Purchaser's methods or processes, will not, by virtue of such combination
or use, infringe patents of others, and GRAYLOC shall not be liable for any patent infringement arising from or by reason of any such
use or sale. On any item sold by GRAYLOC, but specified or designed and/or manufactured by others, GRAYLOC shall endeavor,
for protection of Purchaser, to obtain the most advantageous patent guarantee, which shall run directly to Purchaser, with
GRAYLOC's liability limited to rendering to Purchaser reasonable assistance in enforcing such guarantees. Further, GRAYLOC shall
not be liable for the use or sale of any material, equipment or apparatus specially made, in whole or in part, to the Purchaser's design
specifications and, in such instances, all patent liabilities shall be borne by the Purchaser. If an injunction is issued enjoining use of
products designed by GRAYLOC, GRAYLOC, at its own expense, shall either procure for Purchaser the right to continue to use such
products, design and specify non-infringing products, or design and specify modifications so that the product becomes non-infringing,
as GRAYLOC's sole and limited obligation for patent infringement.
14. Shortages
Subject to Paragraphs 7.1, 11.1 and 11.2, all claims regarding shortages in any shipment must be made within thirty (30) days from
the receipt of such shipment, and must be accompanied by the packing list or lists covering the shipment.
15. Force Majeure
Neither GRAYLOC nor Purchaser shall be liable for any delay or inability in performing obligations hereunder, or interfering with production or receipt of goods as herein contemplated, if the delay, inability or interference is due to causes (such as acts of God, war,
resurrection, riot, blockade, earthquake, fire, cyclone, flood, storm of unusual severity, strike, delay of carrier, interruption in utilities,
fuel shortage, embargo, walkout or other labor disturbance, interference of civil or military authority, governmental orders or regulations, or other cause, whether similar or dissimilar) beyond the reasonable control of the party affected, exercising ordinary diligence.
The party so delayed, prevented or interfered with shall be excused from making or taking deliveries to the extent of such delay, prevention or interference (excluding the obligation to pay monies owed), provided prompt written notice is given to the other party.
16. Governing Law
16.1

This Agreement shall be governed and construed in accordance with the General Maritime Law of the United States of
America, not including however any of its conflicts of law rules or other provisions which would direct the application of or refer
to any other body of law(s), or the law of any other jurisdiction, or the laws of any state of the United States. Alternatively, and
only in the event that the General Maritime Law of the United States of America is deemed to not apply, this Agreement, shall
be construed in accordance with the laws of the State of Texas.

16.2

The parties agree that, if the United Nations Convention on International Sale of Goods 1988 (CISG), as amended from time
to time, is applicable to this Agreement, the utilization of the CISG is excluded.

16.3

The invalidity, in whole or in part, of the Terms, or any provision or any part thereof, shall not affect the validity or enforceability of any other terms or provisions.

Insurance
Purchaser agrees to procure and maintain, at their sole expense, policies of insurance, or qualified self- insurance, no less than the
following minimum limits:
Workers Compensation
Employer’s Liability
Comprehensive General Liability
Automobile Liability
Umbrella Coverage

Statutory
$1,000,000 per occurrence
Combined Single Limit for Bodily Injury and Property Damage of
$1,000,000 per occurrence.
Combined Single Limit for Bodily Injury and Property Damage of
$1,000,000 per occurrence
$3,000,000 limit per occurrence

All such policies shall name GRAYLOC as additional insured, excepting Workers’ Compensation.. Purchaser, on request, shall furnish GRAYLOC insurance certificates evidencing the aforementioned minimum limits of insurance and additional insured status of
Grayloc. Such insurance certificates shall state that insurers shall give GRAYLOC thirty (30) days’ written notice in the event of cancellation of the aforementioned insurance policies. Purchaser shall arrange for any insurance covering the liabilities under Section 3
to be extended to include waivers of subrogation.
5.

Price and Payment
5.1

All products are priced in U.S. dollars, unless otherwise stated, and will be invoiced upon shipment. Net payment is due within
thirty (30) days after invoice date. Interest charges at eighteen percent (18%) per annum (or at maximum lawful rate) will be
applicable to delinquent accounts unpaid after due date. Prices quoted are subject to change without notice if not accepted
within thirty (30) days, unless specifically stated otherwise.

5.2

Unless otherwise quoted, Purchaser will pay, in addition to the purchase price of the products, all charges for export, packing
and processing, insurance and transportation, and the price of products does not include personnel or equipment required to
install the products.

16.4

The right of GRAYLOC to require strict performance of the Terms shall not be affected by any prior waiver or course of dealing.

16.5

Should any governmental law, regulation, ruling and/or policy (including, but not limited to, import/export restrictions, license
requests, exchange controls or requirements, or any document for certifications or information which may tend to discriminate
or favor GRAYLOC's customers) effectively prohibit or restrict GRAYLOC or its affiliates from delivering products or services,
or restrict GRAYLOC or its affiliates from receiving or remitting currency payments or the equivalent thereof, in full payment for
products/services, then GRAYLOC or its affiliates shall not be liable for any damages. GRAYLOC shall endeavor to promptly
notify Purchaser of any known restrictions or prohibitions.

16.6

In the event of termination, cancellation or avoidance of this Agreement, the terms and conditions pertaining to warranty limitations and disclaimers, indemnities, environmental liability, disclaimer of consequential damages, and limitations of liability, shall
remain in full force and effect.

31

For further information on the Grayloc® connector and related products, please contact the nearest
Grayloc Products engineering, manufacturing and sales locations:
Western Hemisphere
11835 Charles Road
Houston, Texas 77041-2411
U.S.A.
Tel: 713-466-8853
Fax: 713-937-2335

Eastern Hemisphere
Hydropark, Tern Place
Denmore Road, Bridge of Don
Aberdeen, Scotland AB23 8JX
Tel: (44) 1224 222790
Fax: (44) 1224 222780

Middle East
Unit No FZS1-BG04
Jebel Ali Free Zone
Dubai, U. A.E.
Tel +971 (0) 4 886 1980
Fax +971 (0) 4 886 1766

In addition to the locations listed above, Grayloc products are sold through licensed agent/distributors throughout the world. Contact the appropriate regional sales headquarters for further information.

Copyright © 2002 by Grayloc Products. All Rights Reserved. GLOC-105 / 11- 09 / 5M



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