Emerson Fisher Easy E Ew Data Sheet

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Product Bulletin
59.1:061
D101633X012
July 2009

Sliding-Stem Live-Loaded Packing

Fisherr ENVIRO-SEALt and HIGH-SEAL
Packing Systems for Sliding-Stem Valves
(Live-Loaded)
Fisher ENVIRO-SEAL and HIGH-SEAL live-loaded
packing systems offer exceptional stem sealing
capabilities. These systems easily install in your
existing valves or can be purchased with new
valves. ENVIRO-SEAL and HIGH-SEAL packing
systems help seal your process to conserve valuable
process fluid and protect the environment against
the emission of hazardous or polluting fluids. The
long life and reliability of these systems also reduce
your maintenance costs and downtime.

For process control applications requiring
compliance with mandated environmental protection
regulations, the unique ENVIRO-SEAL packing
system (figure 1) and, for hazardous service, the
ENVIRO-SEAL bellows seal system are offered.
These packing systems keep fugitive emission
concentrations below the 100 ppm (parts per million)
requirement set by the federal Environmental
Protection Agency (EPA).

PACKING
FLANGE

VALVE
STEM

BELLEVILLE
SPRINGS
PACKING
FOLLOWER

VALVE
BONNET

W58141* / IL

The HIGH-SEAL packing system (figure 2) provides
excellent sealing at pressure/temperature ratings
beyond ENVIRO-SEAL limits.

Figure 1. Fisher easy-et Valve Bonnet with
ENVIRO-SEAL Packing Installed

Features
Both ENVIRO-SEAL and HIGH-SEAL packing
systems feature live-loading and unique packing-ring
arrangements for consistent, long-term sealing
performance. The ENVIRO-SEAL packing system is
available in double PTFE, graphite ULF, and duplex
configurations. The HIGH-SEAL packing system is
offered without PTFE washers (graphite composite),
for nuclear applications where PTFE is prohibited,
and with PTFE washers (graphite ULF) for all other
applications.

www.Fisher.com

D Compliance with the Clean Air Act—The
excellent stem sealing of the ENVIRO-SEAL packing
system (figure 2) controls emissions to below the
EPA minimum of 100 ppm (parts per million).
ENVIRO-SEAL packing systems provide an
excellent stem seal to help prevent the loss of
process fluid.
D Improved Service Life—ENVIRO-SEAL and
HIGH-SEAL packing systems, coupled with a very

Product Bulletin

Sliding-Stem Live-Loaded Packing
smooth stem surface and live-loading, give you long
service life with very low maintenance. The
live-loading provides a constant load over the life of
the packing material. This greatly reduces or, in
many applications, helps to eliminate your need for
packing box adjustment and maintenance. The
installed packing system provides excellent sealing,
guiding, and transmission of loading force.

59.1:061
July 2009

Lubrication is required for the packing studs and
nuts. While it is important to properly lubricate the
stud threads and internal nut threads, it is also
important to properly lubricate the contacting face of
the nut.

D Easy Installation in Existing Valves—All
parts needed to install the systems in existing valves
are available in a convenient kit.
D Adaptable to Many Applications—
ENVIRO-SEAL systems are available with PTFE,
Graphite ULF, or Duplex packing for 9.5 through
31.8 mm (3/8 through 1-1/4 inch) diameter valve
stems on CL125 through CL600 valves. HIGH-SEAL
systems with Graphite ULF packing are available for
9.5 through 50.8 mm (3/8 through 2-inch) diameter
valve stems on CL600 through CL2500 valves.
Standard ENVIRO-SEAL PTFE packing systems can
be used in vacuum service with packing rings in the
standard orientation. It is not necessary to reverse
the PTFE packing rings.

Lubrication Recommendations for
ENVIRO-SEAL Packing Systems
Do not lubricate ENVIRO-SEAL packing
components or the bonnet bore prior to
assembly. Lubrication is often used as part of
standard valve assembly techniques. However,
lubrication is not required for the ENVIRO-SEAL
packing systems.

2

ENVIRO-SEAL Duplex Packing
Systems
ENVIRO-SEAL Duplex packing systems (figure 2)
are available for Fisher sliding-stem valves with
valve stem diameters ranging from 9.5 to 31.8 mm
(3/8 to 1-1/4 inches). See table 2 for a list of
applicable product types and stem diameters.
ENVIRO-SEAL Duplex packing systems were
developed, utilizing the benefits of both PTFE and
graphite components. These special packing
systems provide the capability of graphite packing
along with low friction advantages of PTFE packing.
Thus, ENVIRO-SEAL Duplex packing systems
provide a low friction, low emission, fire-tested
solution for applications with process temperatures
below 232_C (450_F). ENVIRO-SEAL Duplex
packing systems were tested in accordance with API
Standard 589, “Fire Test Evaluation of Valve Stem
Packing”, first edition.

Product Bulletin
59.1:061
July 2009

Sliding-Stem Live-Loaded Packing
PACKING
BOX
STUD

PACKING
BOX
STUD

SPRINGS

SPRINGS

ANTI
EXTRUSION
RING

PACKING
RING
FOLLOWER
PACKING

VALVE
BONNET

LANTERN
RING

W8532-1

W58033 / IL

TYPICAL ENVIRO-SEAL PACKING SYSTEM
WITH GRAPHITE ULF PACKING

TYPICAL ENVIRO-SEAL PACKING SYSTEM
WITH PTFE PACKING

PACKING
BOX
STUD

PACKING
BOX
STUD
SPRING

SPRINGS

FOLLOWER
FOLLOWER

PACKING

PACKING

W8533-1

A7018 / IL

TYPICAL ENVIRO-SEAL PACKING SYSTEM
WITH DUPLEX PACKING

TYPICAL HIGH-SEAL PACKING SYSTEM
WITH GRAPHITE ULF PACKING

Figure 2. Fisher ENVIRO-SEAL and HIGH-SEAL Packing Systems

3

Product Bulletin
59.1:061
July 2009

Sliding-Stem Live-Loaded Packing
Table 1. Sliding-Stem Product Availability for Fisher
ENVIRO-SEAL PTFE and Graphite ULF Packing
Systems
VALVE
TYPE

9.5
(3/8)

12.7
(1/2)

19.1
(3/4)

25.4
(1)

A

X

X

X

X

CAV4

---

---

X

D

---

X

---

DA

---

X

---

DBQ

---

X

X

DBQ-NS
easy-e
(ED, ES,
ET, EZ,
EW)
E-NS

4

STEM DIAMETER, mm (INCHES)

--X
---

X
X
X

--X
---

STEM
DIAMETER,
mm

A

X

X

X

X

---

X

X

X

X

easy-e
(ED, ES,
ET, EZ,
EW)

X

X

X

X

X

EH

---

X

X

X

X

FB

---

---

---

X

X

HP

---

X

X

X

X

HS

---

X

X

X

---

SS-83

---

---

X

X

X

---

YD

X

X

X

X

X

YS

X

X

X

X

X

---

---

X

X

---

---

---

---

---

---

---

---

---

---

X

X

---

---

X
---

X
---

-------

-----

EH

---

X

X

X

X

---

---

ENA

---

---

---

---

X

---

---

ET-C

---

X

X

X

---

---

---

EWT-C

---

X

X

X

---

---

---

EZ-C

X

X

X

---

---

---

FB

---

---

---

X

X

---

---

HP

---

X

X

X

X

---

---

HS

---

X

X

X

---

---

---

SS-79

---

---

X

---

---

---

---

SS-83

---

---

X

X

X

---

---

SS-85

---

X

---

---

---

---

---

SS-95

---

X

---

---

---

---

---

SS-98

---

---

---

X

---

---

---

YD

X

X

X

X

X

---

---

YS

X

X

X

X

X

---

---

---

STEM DIAMETER, mm (INCHES)

DBQ

31.8
12 mm 18 mm
(1-1/4)

---

VALVE
TYPE

31.8
(1-1/4)
X

X

---

Table 2. Sliding-Stem Product Availability for Fisher
ENVIRO-SEAL Duplex Packing
9.5
(3/8)

12.7
(1/2)

19.1
(3/4)

25.4
(1)

Product Bulletin
59.1:061
July 2009

Sliding-Stem Live-Loaded Packing

ENVIRO-SEAL Graphite ULF and
HIGH-SEAL Graphite ULF

A61421/IL

Figure 3. Applications Guidelines for 100 ppm Service

Temperature, C
240 184 129

73

18

38

94

149

4500

205

260

316

ENVIRO-SEAL PTFE AND
ENVIRO-SEAL DUPLEX

4000

371

427

483

538

594

HIGH-SEAL
GRAPHITE ULF

310

276

3500

241
207

3000
ENVIRO-SEAL
GRAPHITE ULF

172

2500
HIGH-SEAL
GRAPHITE

2000

138

1500

103

1000

69

500

34

0
400 300 200 100

0

100

200

300

400

500

600

700

800

900 1000

Pressure, Bar

Pressure, PSI

649

0
1100

1200

Temperature, F
Figure 4. Applications Guidelines for Nonenvironmental Service

Ordering Information

6. Valve stem diameter and bonnet type (plain,
extension, or bellows)

When ordering, specify:

1. Process fluid

7. Refer to the specifications. Review the information
under each specification. Write down your choice
whenever a selection is to be made.

2. Process fluid temperature

For New Valves

3. Maximum valve inlet pressures

1. Refer to the valve bulletin for ordering information.

4. Maximum valve pressure drops

2. Also refer to the specifications. Review the
information under each specification and in the
referenced tables; write down your choice whenever
there is a selection to be made.

For Existing Valves

5. Valve design (ED, YD, etc.), size, and pressure
rating

5

Product Bulletin
59.1:061
July 2009

Sliding-Stem Live-Loaded Packing
ENVIRO-SEAL Packing System Specifications
Applicable Sliding-Stem Valve Designs and Stem
Diameters
See tables 1 and 2
Pressures and Temperatures(1)
See bulletin 59.1:062, Packing Selection
Guidelines for Sliding-Stem Valves.
Construction Materials
PTFE Packing Systems:
Packing Ring and Lower Wiper: PTFE V-ring(2).
Male and Female Adaptor Rings: Carbon-filled
PTFE V-ring
Optional Male and Female Adaptor Rings:
Glass-filled PTFE V-ring

Graphite ULF Packing Systems:
Packing Rings: Graphite
Anti-Extrusion Washer: Filled PTFE (not
required for graphite packing)
Lantern Ring: S31600 (316 stainless steel) (not
required for graphite packing)
Packing Box Flange: S31600
Spring: N07718
Packing Follower: S31600 lined with
carbon-filled PTFE
Packing Box Studs: Strain-hardened 316
stainless steel
Packing Box Nuts: 316 stainless steel SA194
Grade 8M

1 The pressure/temperature limits in this bulletin, in the valve bulletin, and any applicable code or standard limitation, should not be exceeded.
2. In vacuum service, it is not necessary to reverse the ENVIRO-SEAL PTFE packing rings.

HIGH-SEAL Packing System Specifications
Applicable Sliding-Stem Valve Designs
CL600: J easy-e(1), J YD, and J YS
CL1500: J CAV4, J HPD, J HPS, and J HPT
CL2500: J EHD, J EHS, J EHT, J HPD,
J HPS, and J HPT
Applicable Stem Diameters
Millimeters: J 9.5, J 12.7, J 19.1, J 25.4,
J 31.8, and J 50.8
Inches: J 3/8, J 1/2, J 3/4, J 1, J 1-1/4, and
J2

Maximum Pressures and Temperatures(2)
See bulletin 59.1:062, Packing Selection
Guidelines for Sliding-Stem Valves.
Construction Materials
Packing Rings: Carbon/graphite composition,
graphite, and zinc
Packing Box Bushing: Graphite
Packing Box Flange, Studs, and Nuts: S31600
(316 stainless steel) (other materials are available
on request)
Springs: J S17700 (17-7 stainless steel) or
J N07718

1. easy-e includes ED, ES, ET, EW, and EZ valves.
2. The pressure/temperature limits in this bulletin, in the valve bulletin, and any applicable code or standard limitation, should not be exceeded.

6

Product Bulletin
59.1:061
July 2009

Sliding-Stem Live-Loaded Packing
Note

Neither Emerson, Emerson Process
Management, nor any of their affiliated
entities assumes responsibility for the
selection, use, or maintenance of any
product. Responsibility for the
selection, use, and maintenance of any
product remains with the purchaser
and end-user.

7

Product Bulletin

Sliding-Stem Live-Loaded Packing

59.1:061
July 2009

Fisher, easy-e, and ENVIRO-SEAL are marks owned by one of the companies in the Emerson Process Management business division of Emerson
Electric Co. Emerson Process Management, Emerson, and the Emerson logo are trademarks and service marks of Emerson Electric Co. All other
marks are the property of their respective owners.
The contents of this publication are presented for informational purposes only, and while every effort has been made to ensure their accuracy, they
are not to be construed as warranties or guarantees, express or implied, regarding the products or services described herein or their use or
applicability. All sales are governed by our terms and conditions, which are available upon request. We reserve the right to modify or improve the
designs or specifications of such products at any time without notice. Neither Emerson, Emerson Process Management, nor any of their affiliated
entities assumes responsibility for the selection, use or maintenance of any product. Responsibility for proper selection, use, and maintenance of
any product remains solely with the purchaser and end-user.

Emerson Process Management
Marshalltown, Iowa 50158 USA
Sorocaba, 18087 Brazil
Chatham, Kent ME4 4QZ UK
Dubai, United Arab Emirates
Singapore 128461 Singapore
www.Fisher.com
8
EFisher
Controls International LLC 1991, 2009; All Rights Reserved



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