FM 2500DD A Parker Sandwich

User Manual: FM 2500DD-A

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Sandwich Valves
Series CM, CPOM, FM, PRDM, PRM, RM, Z**

Catalog HY14-2500/US

Introduction

B

Sandwich valves provide a variety of check, flow control, pressure relief and pressure reducing functions in
a compact NFPA D03, D05, D07 and D08 sandwich
style valve. The NFPA D03 valve body conforms to
the ISO 40 mm (1.57") thickness. These valves are
mounted between directional control valves and their
mounting surface.

The NFPA D03 Sandwich valves may also be used in
conjunction with Parker's Cartpak Series of sandwich
valves which offer a wide variety of additional functions including relief, pressure reducing/relieving, load
check, back pressure check, needle, flow control,
pressure compensated flow control, crossover, relief
and directional valves.

Check Valves
Series CM, ZRV

•

Valve bodies are manufactured from steel which
provide extra strength and durability for longer life.
Internal hardened steel components also provide
longer life.

•

Positive shut-off is provided by a fully guided
poppet and allows full flow in the unchecked position.

•

Parker CM, ZRV sandwich style check valves can
be used either on the 'P', 'A', 'B', 'T' port or combination.

•

Large internal flow paths allow high flow at low
pressure drop.

CM*PT

CM*AA

CM*AAF

CM*BB

CM*BBF

CM*DD

CM*DDF

CM*PP, ZRV-P

CM*TT, ZRV-T

CPOM*AA, ZRE-A

CPOM*BB, ZRE-B

P.O. Check Valves
Series CPOM, ZRE

•

Parker CPOM, ZRE sandwich style, pilot operated
check valves can be provided in either single or
double configurations.

•

The pilot operated checks may be positioned in 'A'
port or 'B' port; or both 'A' and 'B' ports.

•

Valve bodies are manufactured from steel which
provide extra strength and durability for longer life.
Internal hardened steel components also provide
longer life.

•

Large internal flow paths allow high flow at low
pressure drop.

CPOM*DD, ZRE-AB

Parker Sandwich.indd, dd

B2

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM, CPOM, FM, PRDM, PRM, RM, Z**

Catalog HY14-2500/US

Introduction
Flow Control Valves
Series FM, ZRD

•

Parker FM, ZRD sandwich style flow control valves
can be provided in either single or double
configurations.
The flow controls may be positioned in 'P' port,
'A' port, 'B' port, or both 'A' and 'B' ports.

•

Valve bodies are manufactured from steel which
provide extra strength and durability for longer life.
Internal hardened steel components also provide
longer life.

•

Two step needles (standard) provide fine
adjustment for the first three turns and course
adjustment for the last three turns. Fine metering
needles are available as an option on D03 and D05
valves.

•

Large bypass checks allow high flow at a low pressure drop.

•

Reversible (invert 180°) for meter-in or meter-out
(D03 & D05 only).

B

FM*AA, ZRD-AA
(Meter Out)

FM*BB, ZRD-BA
(Meter Out)

FM*DD, ZRD-ABA
(Meter Out)

FM*PP

(Meter Out)

Pressure Reducing Valves
Series PRDM

•
•
•
•
•
•

PRDM sandwich valves may be selected to reduce
pressure in the 'P' port, 'A' port or 'B' port.
The direct operated, cushioned piston design
results in fast response, low leakage and minimal
hysteresis.
Up to nine pressure adjustment ranges are
available with maximum pressure settings.

PRDM*PP

Adjustment options include: internal hex screw,
hand knob or internal hex with keylock.

T

P

A

B

M

Fluorocarbon and nitrile seals are available for
multi-fluid compatibility.

PRDM*AA

Available gage port connections include SAE, NPT,
Metric and BSPP.

T

P

A

B

T

P

A

B

M

PRDM*BB
M

Parker Sandwich.indd, dd

B3

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM, CPOM, FM, PRDM, PRM, RM, Z**

Catalog HY14-2500/US

Introduction
Pressure Reducing Valves
Series PRM, ZDR

•

B

•
•

Parker PRM, ZDR sandwich style pressure reducing valves can be used to reduce pressure on the
'P' port, the 'A' port, or the 'B' port.
Three pressure adjustment options available:
slotted screw, knob and locking knob.

PRM*AA, ZDR-A

Valve bodies are manufactured from steel which
provide extra strength and durability for longer life.
Internal hardened steel components also provide
longer life.

PRM*BB, ZDR-B

PRM*PP, ZDR-P

Pressure Relief Valves
Series RM, ZDV

•
•
•

Parker RM, ZDV sandwich style relief valve is a
'P' port to 'T' port relief.
Valve bodies are manufactured from steel which
provide extra strength and durability for longer life.
Internal hardened steel components also provide
longer life.

RM*PT, ZDV-P

Three pressure adjustment options available:
slotted screw, knob and locking knob.

Parker Sandwich.indd, dd

B4

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM

Catalog HY14-2500/US

Technical Information
General Description
Series CM check valves provide an integral, full flow
check valve in the pressure 'P' port, 'A' port, 'B' port, or
the tank 'T' port of the directional valve. Reverse flow is
blocked. The CM2 and CM3 sizes offer a combination
P&T check version.

B

Features

•

Valve bodies are manufactured from steel which provides
extra strength and durability for longer life. Internal hardened steel components also provide longer life.
Positive shut-off is provided by a fully guided poppet and
allows full flow in the unchecked position.
Parker CM sandwich style check valves can be used
either on the 'P', 'A', 'B', 'T' ports, or combinations.
Large internal flow paths allow high flow at low pressure
drop.

•
•
•

Specifications
CM2

CM3

Mounting
Pattern
		

NFPA D03,
CETOP 3,
NG6

NFPA D05,
CETOP 5,
NG10

NFPA D08,
CETOP 8,
NG25

Maximum
Pressure

345 Bar
(5000 PSI)

345 Bar
(5000 PSI)

345 Bar
(5000 PSI)

Maximum
Flow

76 LPM
(20 GPM)

113 LPM
(30 GPM)

340 LPM
(90 GPM)

0.3 Bar
(5 PSI),
3 Bar*
(45 PSI),
5 Bar*
(75 PSI)

0.3 Bar
(5 PSI),
3 Bar*
(45 PSI),
5 Bar*
(75 PSI)

0.3 Bar
(5 PSI)

Cracking
Pressure
		
		
		
		

CM3 Reverse Flow Check

PSI Bar
500 34

CM6

75 PSI

400 27

Pressure

		

45 PSI

300 20

5 PSI

200 14

100

7

0
LPM 0
GPM

37.9
10

18.9
5

56.8
15

Flow

* Optional

75 PSI

Pressure

400 27

45 PSI

300 20

300 20
75 PSI

200 14
45 PSI

100
200 14

100

7

5 PSI

5 PSI

0
LPM 0
GPM

7

0
LPM 0
GPM

113.6
30

400 27

CM2 Reverse Flow Check
Pressure

PSI Bar
500 34

94.6
25

CM6 Reverse Flow Check

PSI Bar
500 34

Performance Curves

75.7
20

18.9
5

37.9
10

Flow

56.8
15

113.6
30

56.8
15

170.3
45

Flow

227.1
60

283.9
75

340.6
90

VISCOSITY CORRECTION FACTOR

75.7
20

Viscosity (SSU)
% of P (Approx.)

75
93

150
111

200
119

250
126

300
132

350
137

400
141

Curves were generated using 100 SSU hydraulic oil. For any other viscosity, pressure
drop will change per chart.

Parker Sandwich.indd, dd

B5

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM

Catalog HY14-2500/US

Ordering Information
CM

*

Check
Valve

B

Code
2
		
3
		
6
		

Size

Port

Description

Code

NFPA D03
Subplate Mounting
NFPA D05
Subplate Mounting
NFPA D08
Subplate Mounting

Cracking
Pressure

Description

Code

PP*
P Port Check
PT*
P and T Port Checks
TT*
T Port Check
DD
A and B Port Checks
AA
A Port Check
BB
B Port Check
AAF
A Port Inverted
BBF
B Port Inverted
DDF
A and B Ports Inverted
* Not available on 6 size

Seal

Type

Code

Omit
5 PSI
Y
45 PSI*
Z
75 PSI*

V
N

Design
Series
NOTE:
Not required
when ordering.
Type
Fluorocarbon
Nitrile

* Not available
on 6 size.

Bold: Designates Tier I products and options.
Non-Bold: Designates Tier II products and options. These products will have longer lead times.
Manapak Bolt Kits
Size "3"

Size "2"
		
Sandwich
No. of
& Valve
Sandwich Combination

1
2
3
4

Sandwich & D1
Sandwich & D1
Sandwich & D1
Sandwich & D1

		
Bolt
Kit

Bolt Length
mm (in)

No. of
Sandwich

Sandwich

& Valve
Combination

D3W-30
D3DW &
D31*W*

1
Sandwich & D3 BK141	  88.9 (3.50)
BK243	  73.2 (2.88)
2
Sandwich & D3 BK142 139.7 (5.50)
BK225 111.3 (4.38)
3
Sandwich & D3 BK143 190.5 (7.50)
BK244 152.4 (6.00)
BK245 190.5 (7.50) Bolt Kits must be ordered separately. *D31VW with
internal pilot and internal drain only.
Size "6"

Sandwich & Valve
Combination

Bolt Length
mm (in)

Bolt 		
Kit
Description

1 Sandwich & D6*VW Valve BK121 1/2 - 13 x 5.25
2 Sandwich & D6*VW Valve BK122 1/2 - 13 x 8.00
3 Sandwich & D6*VW Valve BK123 1/2 - 13 x 10.75
4 Sandwich & D6*VW Valve BK124 1/2 - 13 x 13.50
Note: Bolt Kits must be ordered separately.

Qty/
Kit

Torque
IN-LBS

6
6
6
6

80
80
80
80

Unit Weight:
CM2 0.8 kg (1.7 lbs.)
CM3 1.8 kg (3.9 lbs.)
CM6 7.7 kg (17 lbs.)

Schematics

AA Option

AAF Option

BB Option

BBF Option

DD Option

DDF Option

PP Option

TT Option

PT Option

Parker Sandwich.indd, dd

B6

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM2

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

7.0
(0.28)

14.5
(0.57)

B

T
A

45.0
(1.77)

B

P

Top View

70.0
(2.76)

40.0
(1.57)

38.8
(1.53)
3.2
(0.13)
3.2
(0.13)

Face View

P
B

A

T

SHOWN WITHOUT O-RING PLATE

Bottom View

Note: Transfer the locating pin to the hole on the opposite side of the valve body for 'T' port option.
(Invert body 180°)

Parker Sandwich.indd, dd

B7

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM2

Catalog HY14-2500/US

Surface Patterns
Bottom Views

Top Views
T

P

A

B

B

A

B
T

P

PP/PT

TT

T

P

B

A

B

A

P

T

DD

DDF

T

P

B

A

B

A

T

P

BB

BBF

P

T

B

A

B

A

P

T

AA

AAF

Parker Sandwich.indd, dd

B8

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM3

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

69.9
(2.75)

T

B

T
B

A
P
11.9
(0.47)
19.1
(0.75)

Top View

50.0
(1.97)

48.8
(1.92)

92.1
(3.63)

Face View

SHOWN WITHOUT O-RING PLATE

Bottom View

Parker Sandwich.indd, dd

B9

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM3

Catalog HY14-2500/US

Surface Patterns
Bottom Views

Top Views

P

A

B

B

T

T

T

T
B

A

P

TT

PP/PT

P
A

B

T

T
T

T
B

A
P

DD

DDF

P
B

A
T

T
T

T
B

A
P

AA

AAF

P
B

A
T

T

T

T
A

B
P

Parker Sandwich.indd, dd

BB

BBF
B10

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM6

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

B

Top View

Face View

Bottom View

Parker Sandwich.indd, dd

B11

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM6

Catalog HY14-2500/US

Surface Patterns
Bottom Views

B

Top Views

T

X

A
T

P

P

A

Y

DDF

T
A
T

P

A

Y

B

X

AAF

P

T
A
T

Y

P

B

AA

X

B

X

DD

X

Y

B

Y

B
P

A

Y

B

X

BB

BBF

Parker Sandwich.indd, dd

B12

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CPOM

Catalog HY14-2500/US

Technical Information
General Description
Series CPOM double pilot operated check valves block
leakage from the actuator ports to tank when the directional valve is in the center position.
NOTE: For max. response and shut off, a directional valve with both
cylinder ports drained to tank in the center position is recommended for use with sandwich double pilot operated check valves.

B

Features

•
•
•
•
•

Parker CPOM sandwich style, p.o. check valves can be
provided in either single or double configurations.
The p.o. checks may be positioned in 'A' port or 'B' port;
or both 'A' and 'B' ports.
Valve bodies are manufactured from steel providing extra
strength and durability for longer life. Internal hardened
steel components also provide longer life.
Positive shut-off is provided by a hardened poppet
and cage assembly.
Large internal flow paths allow high flow at low
pressure drop.

Specifications

Performance Curves
CPOM2

Pressure Differential

PSI Bar
116 8

87

6

58

4

29

2

		

free flow

CPOM3

CPOM6

Mounting
Pattern
		

NFPA D03,
CETOP 3,
NG 6

NFPA D05,
CETOP 5,
NG 10

NFPA D08,
CETOP 8,
NG 25

Maximum
Pressure

345 Bar
(5000 PSI)

345 Bar
(5000 PSI)

205 Bar
(3000 PSI)

53 LPM
(14 GPM)
@ 21 Bar
(305 PSI)
Pressure Drop

76 LPM
(20 GPM)
@ 11 Bar
(155 PSI)
Pressure Drop

227 LPM
(60 GPM)
@ 24 Bar
(350 PSI)
Pressure Drop

1.0 Bar
(15 PSI)

0.3 Bar
(5 PSI)

0.4 Bar
(6 PSI)

Maximum
Flow
		
		
		

piloted open

0
LPM 0
GPM

CPOM2

Cracking
Pressure
12.5
3.3

25
6.6

37.5
9.9

Flow

50
13.2

Pilot Ratio 3:1

3:1

3:1

Leakage

5 DPM

5 DPM

CPOM3

PSI Bar

PSI

5 DPM

CPOM6

Bar

150 10.2

100

Pressure Differential

Pressure Differential

300 20.5

6.8
free flow

50

piloted open

3.4

0
LPM 0
GPM

18.9
5

37.9
10

Flow

56.8
15

200 13.6
free flow

100

6.8
piloted open

0
LPM 0
GPM

75.7
20

37.9
10

75.7
20

113.6
30

Flow

151.4
40

189.3
50

227.2
60

Viscosity Correction Factor

Curves were generated using 100 SSU hydraulic oil. For any other viscosity, pressure Viscosity (SSU)
drop will change as per chart.
Percentage of ∆P (Approx.)

75

150

200

250

300

350

400

93

111

119

126

132

137

141

Parker Sandwich.indd, dd

B13

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CPOM

Catalog HY14-2500/US

Ordering Information
CPOM

*
Size

Pilot
Operated
Check Valve

B

Code
2
		
3
		
6
		

Poppet
Style

Description

Code

NFPA D03
Subplate Mounting
NFPA D05
Subplate Mounting
NFPA D08
Subplate Mounting

DD
		
AA
BB

Cracking
Pressure

Description

Code

Double Poppet
A and B Ports
A Port Only
B Port Only

Omit**

Seal

Type

Code

5 PSI

N
V

Y*
45 PSI
Z*
75 PSI
* Available in
size 2 only.
** 15 PSI on
CPOM2

Design
Series
NOTE:
Not required
when ordering.

Type
Nitrile
Fluorocarbon

Bold: Designates Tier I products and options.
Non-Bold: Designates Tier II products and options. These products will have longer lead times.

Bolt Kits
Size "3"

Size "2"
		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3
4

Sandwich & D1
Sandwich & D1
Sandwich & D1
Sandwich & D1

No. of
Sandwich

Sandwich & Valve
Combination

Bolt
Kit

Bolt Length
mm (in)

1
2
3
4

Sandwich & D6
Sandwich & D6
Sandwich & D6
Sandwich & D6

BK121
BK122
BK123
BK124

133.4 (5.25)
203.2 (8.00)
273.1 10.75)
342.9 (13.5)

		

Sandwich
& Valve
Combination

1
2
3

Sandwich & D3
Sandwich & D3
Sandwich & D3

No. of
Bolt Length
Sandwich
mm (in)

Bolt
Kit

BK243	  73.2 (2.88)
BK225 111.3 (4.38)
BK244 152.4 (6.00)
BK245 190.5 (7.50)

D3W-30
D3DW &
D31*W*

Bolt Length
mm (in)

BK141	  88.9 (3.50)
BK142 139.7 (5.50)
BK143 190.5 (7.50)

* D31VW with internal pilot and internal drain only.

Size "6"
Unit Weight:
CPOM2D		 0.8 kg (1.7 lbs.)
CPOM3D		 4.4 kg (9.6 lbs.)
CPOM6D		 9.5 kg (21.0 lbs.)

Bolt Kits must be ordered separately.

Schematics

AA Option

BB Option

DD Option

Parker Sandwich.indd, dd

B14

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CPOM2

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

33.5
(1.32)

7.0
(0.28)

B
T
A
B
P

Top View

45.0
(1.77)
22.5
(0.89)

3.2
(0.13)
3.2
(0.13)

40.0
(1.57)

18.0
(0.71)

End View

111.5
(4.39)
129.1
(5.08)

Face View

P
A

B
T

Bottom View

Parker Sandwich.indd, dd

B15

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CPOM3

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

46.0
(1.81)

B

P

11.9
(0.47)

A

B

T

T

Top View
69.9
(2.75)

38.2
(1.50)

50.0
(1.97) 28.7
(1.13)

146.1
(5.75)

End View

165.1
(6.50)

Face View

Bottom View

Parker Sandwich.indd, dd

B16

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CPOM6

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

A

B

x

B
Y

P

T

Top View

11.1
(0.44)

11.1
(0.44)

114.3
(4.50)
63.5
(2.50)
23.8
(0.94)
69.5
(2.74)

6.4
(0.25)

168.3
(6.62)

6.4 (0.25) Locating pins
(2 Places)

End View

200.6
(7.90)

Face View

Bottom View

Parker Sandwich.indd, dd

B17

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series FM

Catalog HY14-2500/US

Technical Information
General Description

Features

•
•
•
•
•
•
•

FM style flow control valves can be provided in either
single or double configurations.
The flow controls may be positioned in 'A' port, 'B' port,
both 'A' and 'B' ports or 'P' port.
Valve bodies are manufactured from steel providing extra
strength and durability for longer life. Internal hardened
steel components also provide longer life.
Two step needles provide fine adjustment for the first
few turns and course adjustment for the last few turns.
Standard and fine adjustment needles available.
Large bypass checks allow high flow at a low pressure
drop.
Valve is reversible (invert 180°) for meter-in or
meter-out applications (FM2 and FM3 only).
Adjustment options include Allen hex or hand knob.

Specifications
		

Performance Curves
FM2 Reverse Flow Check

PSI Bar
500 34

Pressure

400 27
Reverse Flow
Check

300 20
200 14
100

P

7

0
LPM 0
GPM

7.6
2

1200

FM2

1

2

4

Turns from
Closed

NFPA D05,
CETOP 5,
NG 10

NFPA D08,
CETOP 8,
NG 25

Maximum
Pressure

345 Bar
(5000 PSI)

345 Bar
(5000 PSI)

205 Bar
(3000 PSI)

Maximum
Flow

76 LPM
(20 GPM)

113 LPM
(30 GPM)

341 LPM
(90 GPM)

Cracking
Pressure

0.3 Bar
(5 PSI)

0.3 Bar
(5 PSI)

0.3 Bar
(5 PSI)

PSI Bar
1500 102

6

1200

80

FM6

NFPA D03,
CETOP 3,
NG 6

Flow

FM2 Standard Needle

FM3

Mounting
Pattern
		

Pressure Drop
Reference
Chart

2

1
15.1 22.7 30.3 37.9 45.4 53.0 60.6 68.1 75.7
4
12
14
16
18 20
6
8
10

PSI Bar
1500 102

		
PP
DD
AA
BB

P
✽
1
1
1

A
2
✽
✽
1

B
2
✽
1
✽

T
1
1
1
1

Turns from
Closed

FM2**D Fine Needle
2

4

8

6

✽ See specific
flow vs. turns

10

80

900

60

600

40

300

20

0
LPM 0
GPM

Pressure

8

Pressure

B

Series FM double flow control valves permit free flow
from the directional valve to the actuator and adjustable
independent flow regulation in each return line from the
actuator (meter-out). The FM2 and FM3 have a seal
plate and can be inverted for meter-in applications (see
installation drawing for flow direction).

10
12
Full
Open

7.6
2

60

600

40
Full
Open

300

20

0
LPM 0
GPM

15.1 22.7 30.3 37.9 45.4 53.0 60.6 68.1 75.7
4
12
14
16
18 20
6
8
10

Flow

Curves were generated using 100 SSU
hydraulic oil @49°C (120°F). For any other
viscosity, pressure drop will change as per
chart.

900

7.6
2

15.1 22.7 30.3 37.9 45.4 53.0 60.6 68.1 75.7
4
12
14
16
18 20
6
8
10

Flow

Viscosity Correction Factor
Viscosity (SSU)

75

150

200

250

300

350

400

Percentage of ∆P (Approx.)

93

111

119

126

132

137

141

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B18

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series FM

Catalog HY14-2500/US

Ordering Information

*

FM
Flow Valve
Control

Code

Size

Meter
Option

Needles

Adjustment

Description

2
		
3
		
*6
		

Code

NFPA D03
Subplate Mounting
NFPA D05
Subplate Mounting
NFPA D08
Subplate Mounting

Type

N
V
Code
S
K

Design
Series
NOTE:
Not required
when ordering.

Seal

Nitrile
Fluorocarbon

Type
Allen Hex
Knob

* FM6 - Meter out only
Code
AA
		
BB
		
DD
		
PP**
		

Description

Code

Description

Single Function
A Port Only
Single Function
B Port Only
A and B Ports
Dual Function
Single Function
P Port

Omit Standard
D*
Fine Meter
* D needle is the standard needle in valves
used as pilot chokes.
Not available on size 6.

** Not availabe on size 6.

Bold: Designates Tier I products and options.
Non-Bold: Designates Tier II products and options. These products will have longer lead times.
Bolt Kits
Size "2"
		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3
4

Sandwich & D1
Sandwich & D1
Sandwich & D1
Sandwich & D1

Size "3"
Bolt
Kit

Bolt Length
mm (in)

BK243	  73.2 (2.88)
BK225 111.3 (4.38)
BK244 152.4 (6.00)
BK245 190.5 (7.50)

		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3

Sandwich & D3
Sandwich & D3
Sandwich & D3

D3W-30
D3DW &
D31*W*

Bolt Length
mm (in)

BK141	  88.9 (3.50)
BK142 139.7 (5.50)
BK143 190.5 (7.50)

* D31VW with internal pilot and internal drain only.

Size "6"
No. of
Sadnwich & Valve
Sandwich
Combination

1
2
3
4

Sandwich & D6
Sandwich & D6
Sandwich & D6
Sandwich & D6

Bolt
Kit

BK121
BK122
BK123
BK124

Bolt Length
mm (in)

Unit Weight:
FM2 1.7 kg (3.8 lbs.)
FM3 2.4 kg (5.2 lbs.)
FM6 7.9 kg (17.5 lbs.)

133.4 (5.25)
203.2 (8.00)
273.1 (10.75)
342.9 (13.5)

Bolt Kits must be ordered separately.

Schematics

AA Option

BB Option

DD Option

PP Option

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Parker Hannifin Corporation
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B

Sandwich Valves
Series FM

Catalog HY14-2500/US

Performance Curves

Pressure Drop Reference Chart
FM3 Reverse Flow Check

PSI Bar
500 34

2

300 20

P
0
LPM0
GPM

37.9
10

18.9
5

94.6
25

75.7
20

56.8
15

Flow

FM3 Standard Needle

PSI Bar
1500 102

1

2

4

Turns
from Closed

8

10

300 20

12
Full
Open

37.8
10

18.9
5

56.8
15

Nominal Flow

94.6
25

75.7
20

FM3**D Fine Needle
2

1

3

4

6

Pressure

400 27

600 40

0
LPM0
GPM

FM6 Reverse Flow Check

PSI Bar
500 34

6

900 60

Pressure

T
1
1
1
1

1
113.6
30

1200 80

1200

B
2
✽
1
✽

Reverse
Flow
Check

7

PSI Bar
1500 102

A
2
✽
✽
1

✽ See specific flow vs. turns chart

200 14

100

300 20

200 14

100

7

0
LPM 0
GPM

113.6
30

Turns
from Closed

38
10

114
30

151
40

189
50

Flow

227
60

265
70

FM6 Standard Needle

PSI Bar
1500 102

8

76
20

2

1

303 341
80 90

Turns
from Closed
4

3

5

10

80

1200 80
900

6

12

60

14
600

40

300

20

0
LPM 0
GPM

Full
Open

18.9
5

37.9
10

56.8
15

Flow

75.7
20

94.6
25

113.6
30

Pressure

Pressure

B

Pressure

400 27

P
✽
1
1
1

		
PP
DD
AA
BB

900 60
8
10

600 40

12
14
16
Full
Open

300 20

0
LPM0
GPM

38
10

76
20

114
30

151
40

189
50

Nominal Flow

227
60

265
70

303 341
80 90

Parker Sandwich.indd, dd

B20

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series FM2

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

B

Note: For meter-in option, invert body 180°.
Parker Sandwich.indd, dd

B21

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series FM3

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

B

Note: For meter-in option, invert body 180°.
Parker Sandwich.indd, dd

B22

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series FM6

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

B

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRDM

Catalog HY14-2500/US

Technical Information
General Description

B

Series PRDM are direct operated pressure reducing
valves that are used to regulate pressure in one area
of a hydraulic circuit at a predetermined level below
normal system pressure. Additionally, an integral
pressure relieving function for the secondary reduced
pressure circuit is incorporated into the design.

Operation
These valves are “normally open” devices that allow
fluid to flow through the controlled port during their
non-actuated or “at rest” condition. When downstream
pressure exceeds the value set by the spring force,
the control piston moves off its seat, closing off the
flow path and thus reducing the fluid passing through
from the main system. The cushioned piston
modulates to maintain the preset pressure in this
branch of the hydraulic circuit. If, due to external
forces, the pressure continues to rise in this branch
circuit, the piston will keep moving against the spring
force allowing fluid to be drained to tank, thereby limiting maximum pressure to the valve’s setting.

Specifications
		

Features

•
•
•
•
•
•

PRDM2

PRDM3

Mounting
Pattern

NFPA D03,
CETOP 3, NG6

NFPA D05,
CETOP 5, NG10

Maximum
Operating
Pressure
P, A, B

350 Bar (5000 PSI)

315 Bar (4560 PSI)

T		

10 Bar (145 PSI)

10 Bar (145 PSI)

Max. Flow

40 LPM (10.5 GPM)

80 LPM (21 GPM)

Adjustment options include: internal hex screw, hand
knob or internal hex with keylock.

Maximum
Leakage
P-A

15 ml/min (1.0 cu. in.)

Fluorocarbon seals are available.

Pressure
Range

Available gage port connections include SAE, NPT,
Metric and BSPP.

		

PRDM sandwich valves may be selected to
reduce pressure in the 'P' port, 'A' port or 'B' port.
The direct operated, cushioned piston design results in
fast response, low leakage and minimal hysteresis.
Up to nine pressure adjustment ranges are available with
maximum pressure settings.

Code
01
02*
05**
06*
10**
15**
16*
21
35*

Range
1.0 to 14 Bar (15 to 200 PSI)
1.5 to 25 Bar (22 to 363 PSI)
2 to 50 Bar (29 to 725 PSI)
1.5 to 64 Bar (22 to 928 PSI)
4 to 100 Bar (58 to 1450 PSI)
6 to 150 Bar (87 to 2175 PSI)
3 to 160 Bar (44 to 2320 PSI)
8 to 210 Bar (116 to 3045 PSI)
10 to 315 Bar (147 to 4560 PSI)

		
		
		
		
		
Viscosity
Range

12 to 230 cSt / mm²/s (56 to 1066 SSU)

Filtration

ISO Code 18/16/13 or Better

* PRDM2 only
** PRDM3 only.

Parker Sandwich.indd, dd

B24

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRDM

Catalog HY14-2500/US

Ordering Information
PRDM
Pressure
Reducing/
Relieving

Code

Size

Port
Reduction

Pressure
Range

Seal

Adjustment

Gage
Port

Design
Series
NOTE:
Not required
when ordering.

Description

2
		
3
		

NFPA D03
Subplate Mounting
NFPA D05
Subplate Mounting
Code
PP
AA
BB

Code
N
V
Code

Description

L
S
		
K

P Port Only
A Port Only
B Port Only

Code

Code

Type
Nitrile
Fluorocarbon

Type

N
S
		
M
G

Type
1/4” NPT
SAE #4 (UNF-2B 7/16-20)
Adapter in PRDM3
Metric
1/4" BSPP

Hex w/Key Lock
Internal Hex
Screw Adj.
Knob

Description

01
02*
05**
06*
10**
15**
16*
21
35*

1 to 14 Bar
1.5 to 25 Bar
2 to 50 Bar
1.5 to 64 Bar
4 to 100 Bar
6 to 150 Bar
3 to 160 Bar
8 to 210 Bar
10 to 315 Bar

(15 to 200 PSI)
(22 to 363 PSI)
(29 to 725 PSI)
(22 to 928 PSI)
(58 to 1450 PSI)
(87 to 2175 PSI)
(44 to 2320 PSI)
(116 to 3045 PSI)
(147 to 4560 PSI)

Bold: Designates Tier I products and options.
Non-Bold: Designates Tier II products and options.
These products will have longer lead times.

* PRDM2 only.
** PRDM3 only.

Bolt Kits
Size "3"

Size "2"
		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3
4

Sandwich & D1
Sandwich & D1
Sandwich & D1
Sandwich & D1

Bolt
Kit

Bolt Length
mm (in)

BK243	  73.2 (2.88)
BK225 111.3 (4.38)
BK244 152.4 (6.00)
BK245 190.5 (7.50)

		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3

Sandwich & D3
Sandwich & D3
Sandwich & D3

D3W-30
D3DW &
D31*W*

Bolt Length
mm (in)

BK141	  88.9 (3.50)
BK142 139.7 (5.50)
BK143 190.5 (7.50)

* D31VW with internal pilot and internal drain only.

Bolt Kits must be ordered separately.
Weights:
PRDM2		1.3 kg (2.9 lbs.)
PRDM3		2.6 kg (5.8 lbs.)

Schematics
T

P

A

B

M

T

P

A

T

B

M

PP Option

P

A

B

M

AA Option

BB Option

Parker Sandwich.indd, dd

B25

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

B

Catalog HY14-2500/US

Performance Curves

Sandwich Valves
Series PRDM

B

NOTE: Lowest pressure setting dependent upon system resistance.
Parker Sandwich.indd, dd

B26

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Parker Hannifin Corporation
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Catalog HY14-2500/US

Performance Curves

Sandwich Valves
Series PRDM

B

NOTE: Lowest pressure setting dependent upon system resistance.
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Parker Hannifin Corporation
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Sandwich Valves
Series PRDM

Catalog HY14-2500/US

Dimensions
PRDM2
Inch equivalents for millimeter dimensions are shown in (**)

B

PRDM3
Inch equivalents for millimeter dimensions are shown in (**)

Parker Sandwich.indd, dd

B28

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRM

Catalog HY14-2500/US

Technical Information
General Description
Series PRM reducing valves are used to regulate
pressure, in one area of a circuit, below normal system pressure. This style valve is well suited to perform
this function as it mounts directly below the directional
control valve.

B

Operation
These are "normally open" valves that allow fluid to
pass through the controlled port during typical operation. When downstream pressure rises above the
value set by an adjustable spring force, the control
pilot opens and allows the main spool to move from
a full open position. The main spool modulates to
maintain the desired "reduced pressure" downstream
of the valve. The PRM3 also has a relieving mode.

Features

•
•
•

PRM sandwich style pressure reducing valves can be
used to reduce pressure on the 'P' port, the 'A' port, or
the 'B' port.
Three pressure adjustment options are available: slotted
screw, knob and locking knob. (PRM6 only)
Valve bodies are manufactured from steel which provide
extra strength and durability for longer life. Internal hardened steel components also provide longer life.

Specifications
		

PRM3

PRM6

Mounting
Pattern

NFPA D05,
CETOP 5, NG 10

Minimum
Pressure

10 Bar (150 PSI) with rated flow, 150 SSU
oil, and fluid temperature of 38°C (100°F).1

Maximum
Pressure

345 Bar
(5000 PSI)

345 Bar
(5000 PSI)

Min.
Flow

3.78 LPM
(1 GPM)

3.78 LPM
(1 GPM)

Maximum
Flow

64 LPM
(17 GPM)

189 LPM
(50 GPM)

Pressure Code
Range		 07
			 17
			 25
			 35

NFPA D08,
CETOP 8, NG 25

		

PRM3/PRM6

Filtration
Venting
		
		

Connecting the vent port to tank allows the
reducing valve to divert flow at minimum
pressure.

Remote
Control

Remote control valve connected to the vent
port can be used to control the pressure.2

Drain
Line
		

Pressure Range
10 to 70 Bar (150 - 1000 PSI)
10 to 175 Bar (150 - 2500 PSI)
10 to 250 Bar (150 - 3500 PSI)
10 to 350 Bar (150 - 5000 PSI)

ISO 4406 (1999); 18/16/13 (meet NAS 1638:7)

Drain line from pilot valve is internally
connected to the tank port. Tank line
pressure is thus added to the valve setting.3

1 Change in flow, temperature or fluid (SSU) rating will affect valve

minimum pressure.

2 Set main valve pressure 10 Bar (150 PSI) higher than remote pilot.
3 It is important that the drain line connection be taken into consideration

when determining the minimum valve setting.

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Parker Hannifin Corporation
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Elyria, Ohio, USA

Sandwich Valves
Series PRM

Catalog HY14-2500/US

Ordering Information

*

PRM
Pressure
Reducing
Valve

B

Code
3
		
6
		

Size

Port
Reduction

Pressure
Range

PP
AA
BB
PA
		
AP
		

Gauge Port

Description
NFPA D05
Subplate Mounting
NFPA D08
Subplate Mounting

Code

Seal

Adjustment

Code
N
V

Available Models
PRM3
PRM6

Description

P Port Only
✓
A Port Only
✓
B Port Only
✓
P Port Reduced/Convertible 		
to A Port Reduced
A Port Reduced/Convertible
to P Port Reduced
Code
07
17
25
35

Code
K
L*
S

✓
✓
✓

Type

Drain

Code

Type

Omit*
S†
N†
M†
G

SAE
SAE
NPT
Metric
1/4 BSPP

Nitrile
* PRM6 only.
Fluorocarbon † PRM3 only.

Type
Knob
Locking Knob
Screw Adj.

* PRM6 only.

Code

Type

Omit
Y

Internal
External

Unit Weight:
PRM3			 3.0 kg (6.6 lbs.)
PRM6			 5.6 kg (12.5 lbs.)

Description
10 to 70 Bar (150 to 1000 PSI)
10 to 175 Bar (150 to 2500 PSI)
10 to 250 Bar (150 to 3500 PSI)
10 to 345 Bar (150 to 5000 PSI)

Design
Series
NOTE:
Not required
when ordering.

Bold: Designates Tier I products and options.
Non-Bold: Designates Tier II products and options.
These products will have longer lead times.

Bolt Kits
Size "6"

Size "3"
		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3

Sandwich & D3
Sandwich & D3
Sandwich & D3

		
D3W-30
No. of
D3DW & Bolt Length
Sandwich
D31*W*
mm (in)
BK141	  88.9 (3.50)
BK142 139.7 (5.50)
BK143 190.5 (7.50)

* D31VW with internal pilot and internal drain only.

1
2
3
4

Sandwich
& Valve
Combination

Bolt
Kit

Bolt Length
mm (in)

Sandwich & D6
Sandwich & D6
Sandwich & D6
Sandwich & D6

BK121
BK122
BK123
BK124

133.4 (5.25)
203.2 (8.00)
273.1 (10.75)
342.9 (13.5)

Bolt Kits must be ordered separately.

Schematics
VALVE SIDE

VALVE SIDE

VALVE SIDE

SUBPLATE SIDE

SUBPLATE SIDE

SUBPLATE SIDE

AA Option
‘A’ Port Reduced

BB Option
‘B’ Port Reduced

PP Option
‘P’ Port Reduced

PA Option

AP Option

PRM3

PRM6

Parker Sandwich.indd, dd

B30

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRM3

Catalog HY14-2500/US

Technical Information
Performance Curves
PSI Bar
500 35

1

300

30

4000

Pressure Drop

25
300

200

20
15
10

2
3
5
4

100
5
0
LPM
GPM

30

0

3

12

15

Flow Rate

Mode
		
PP
AA
BB

3000

2000

200
150
100

Minimum
Setting

1000
50

LPM 20
GPM 75

18

B

250

0

60
9

6

Pressure Drop

400

Valve will not function in this region

PSI Bar
5000

RELIEVING
10
38

A→A
2
2
2

REDUCING
20
75

10
38

30
113

Flow Rate

Flow Path
P→P
1
1
1

0
0

B→B
3
3
3

Viscosity Correction Factor
T→T
4
5
5

Viscosity (SSU)

75

150

200

250

300

350

400

% of ∆P (approx.)

93

111

119

126

132

137

141

Curves were generated using 100 SSU hydraulic oil.
For any other viscosity, pressure drop will change per chart.

NOTE: Lowest pressure setting dependent upon system resistance.

Parker Sandwich.indd, dd

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Parker Hannifin Corporation
Hydraulic Valve Division
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Sandwich Valves
Series PRM3

Catalog HY14-2500/US

Dimensions
PRM3AA
Inch equivalents for millimeter dimensions are shown in (**)

B

Parker Sandwich.indd, dd

B32

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRM3

Catalog HY14-2500/US

Dimensions
PRM3BB
Inch equivalents for millimeter dimensions are shown in (**)

B

Parker Sandwich.indd, dd

B33

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRM3

Catalog HY14-2500/US

Dimensions
PRM3PP
Inch equivalents for millimeter dimensions are shown in (**)

B

Parker Sandwich.indd, dd

B34

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series PRM6

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

B

Top View

End View

Face View

Bottom View

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series RM

Catalog HY14-2500/US

Technical Information
General Description

Features

•
•
•
•

RM sandwich style relief valves can be used to limit pressure in the 'P' port, 'A' port, or 'B' port.
Valve bodies are manufactured from steel which provide
extra strength and durability for longer life. Internal hardened steel components also provide longer life.
Three pressure adjustment options are available: slotted
screw, knob and locking knob.
SAE Gage Port

Specifications
		

RM2

Mounting
Pattern
		

NFPA D03,
CETOP 3,
NG 6

RM3
NFPA D05,
CETOP 5,
NG 10

RM6

Performance Curves

NFPA D08,
CETOP 8,
NG 25

Minimum
Pressure

10 Bar (150 PSI) with rated flow, 150 SSU
oil, and fluid temperature of 38°C (100°F).1

Maximum
Pressure

350 Bar
(5000 PSI)

350 Bar
(5000 PSI)

350 Bar
(5000 PSI)

Minimum
Flow

3.78 LPM
(1 GPM)

3.78 LPM
(1 GPM)

3.78 LPM
(1 GPM)

Maximum
Flow

53 LPM
(14 GPM)

76 LPM
(20 GPM)

341 LPM
(90 GPM)

PSI Bar
5000 341

4000 273
25 spring

Code		
Pressure Range
Pressure
Range		 07
10 to 70 Bar (150 - 1000 PSI)
		 17
10 to 175 Bar (150 - 2500 PSI)
			 25
10 to 250 Bar (150 - 3500 PSI)
			 35
10 to 350 Bar (150 - 5000 PSI)

Filtration
		

ISO 4406 (1999); 18/16/13
(meet NAS 1638:7)

Venting
		
		

Connecting the vent port to tank allows
the relief valve to divert flow at minimum
pressure.2

Remote
Control

RM2 Override Characteristics
35 spring

Pressure

B

Series RM relief valves limit system pressure by
opening to tank when system pressure reaches the
valve setting. With D03 size, they can also be configured to limit the 'A' or 'B' work port pressures independently.

3000 205
17 spring
2000 136
07 spring
1000

68
Min setting
0
LPM 0
GPM

18.9
5

37.9
10

Flow

56.8
15

VISCOSITY CORRECTION FACTOR

Viscosity (SSU)
% of ∆P (Approx.)

Remote control valve connected to the vent
port can be used to control the pressure.3

75
93

150
111

200
119

250
126

300
132

350
137

400
141

Curves were generated using 100 SSU hydraulic oil. For any other viscosity,
pressure drop will change per chart.

1 Change in flow, temperature or fluid (SSU) rating will affect valve

minimum pressure.

2 Not available on Model RM2.
3 Set main valve pressure 10 Bar (150 PSI) higher than remote

pilot.

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Sandwich Valves
Series RM

Catalog HY14-2500/US

Ordering Information

*

RM
Relief Valve

Code
2
		
3
		
6
		

Size

Port
Option

Pressure
Range

Adjustment

Description

Code

NFPA D03
Subplate Mounting
NFPA D05
Subplate Mounting
NFPA D08
Subplate Mounting

N
V
Code

Code

Description

PT
AT*
BT*

Relief P to T
Relief A to T
Relief B to T

* RM2 only.

K
L
S
		
Code
07
17
25
35

Design
Series
NOTE:
Not required
when ordering.

Seal

Type
Nitrile
Fluorocarbon

Type
Knob
Locking Knob
Slotted Screw
with Jam Nut

Description

Unit Weight:
RM2 .95 kg (2.1 lbs.)
RM3 3.0 kg (6.6 lbs.)
RM6 5.9 kg (13.0 lbs.)

10 to 70 Bar (150 to 1000 PSI)
10 to 175 Bar (150 to 2500 PSI)
10 to 250 Bar (150 to 3500 PSI)
10 to 350 Bar (150 to 5000 PSI)

Bold: Designates Tier I products and options.
Non-Bold: Designates Tier II products and options. These products will have longer lead times.
Bolt Kits
Size "3"

Size "2"
		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3
4

Sandwich & D1
Sandwich & D1
Sandwich & D1
Sandwich & D1

Bolt
Kit

Bolt Length
mm (in)

BK243	  73.2 (2.88)
BK225 111.3 (4.38)
BK244 152.4 (6.00)
BK245 190.5 (7.50)

		
No. of
Sandwich

Sandwich
& Valve
Combination

1
2
3

Sandwich & D3
Sandwich & D3
Sandwich & D3

D3W-30
D3DW &
D31*W*

Bolt Length
mm (in)

BK141	  88.9 (3.50)
BK142 139.7 (5.50)
BK143 190.5 (7.50)

* D31VW with internal pilot and internal drain only.

Size "6"
No. of
Sandwich & Valve
Sandwich
Combination

1
2
3
4

Sandwich & D6
Sandwich & D6
Sandwich & D6
Sandwich & D6

Bolt
Kit

BK121
BK122
BK123
BK124

Bolt Length
mm (in)

133.4 (5.25)
203.2 (8.00)
273.1 (10.75)
342.9 (13.5)

Bolt Kits must be ordered separately.

Schematics

AT Option

BT Option

PT Option

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B

Sandwich Valves
Series RM

Catalog HY14-2500/US

Performance Curves

PSI

Bar

RM3 Override Characteristics

PSI

Bar

RM6 Override Characteristics

25 spring

25 spring

3000 205

17 spring

Pressure

Pressure

17 spring
2000 136

07 spring
1000

68

2000 136

07 spring
1000

68

Min setting
0
LPM 0
GPM

PSI Bar
70 4.8

18.9
5

37.9
10

56.8
15

Flow

Min setting
0
LPM 0
GPM

75.7
20

RM3 Vent Flow

PSI

60 4.1

95
25

189
50

Flow

284
75

379
100

RM6 Vent Press vs. Flow

Bar

150 10.2

Pressure

50 3.4

Pressure

B

3000 205

40 2.7
30 2.1
20 1.4
10

100

6.8

50

3.4

.7
0
LPM0
GPM

18.9
5

Flow

37.9
10

0
LPM 0
GPM

56.8
15

25
25

189
50

Flow

284
75

VISCOSITY CORRECTION FACTOR

Viscosity (SSU)
% of ∆P (Approx.)

75
93

150
111

200
119

250
126

300
132

350
137

400
141

Curves were generated using 100 SSU hydraulic oil. For any other viscosity,
pressure drop will change per chart.

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379
100

Sandwich Valves
Series RM2

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

169.4
(6.49)

41.4
(1.63)

B

@Low Pressure

34.8
(1.37)

9.0
(0.35)

@Max. Pressure

T

7.0
(0.28)

A

B
P

3.5
(0.14)

Top View
45.0
(1.77)

SAE 4

PT Body Shown
Gage Port Location
Varies from AT Body
and BT Body

40.0
(1.57)
3.2
(0.13) 128.0
(5.04)
170.3 (6.70) @ Max. Pressure
177.0 (6.97) @ Low Pressure

3.2
(0.13)

Pilot Cartridge Is Located
On The Right Side
For PT Body And BT Body

End View

Face View
88.0
(3.46)
45.2 (1.78)
Needed for
26.2
key removal
(1.31)

P
A

B
T

Bottom View

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Parker Hannifin Corporation
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Sandwich Valves
Series RM3

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)
186.6
(7.35)

41.4
(1.63)

@ Low Pressure

34.8
(1.37)

@ Max.
Pressure

B

T

T
A

B
P

72.2
(2.84)

11.9
(0.47)
69.9
(2.75)
45.6
(1.80)
15.9
(0.63)
21.4 VENT
27.8
(0.84)
50.0 (1.09)
(1.97)

Top View

End View

145.3
(5.71)
187.6 (7.39) @Max. Pressure
194.2 (7.65) @Low Pressure

Face View

45.2 (1.78)
Needed for
key removal

Bottom View

26.2
(1.31)

88.0
(3.46)

GAGE

19.8
(0.78)

93.7
(3.69)

SAE 4

Back View

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Parker Hannifin Corporation
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Sandwich Valves
Series RM6

Catalog HY14-2500/US

Dimensions
Inch equivalents for millimeter dimensions are shown in (**)

B

Top View

Face View

End View

Bottom View

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Parker Hannifin Corporation
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Sandwich Valves
Series ZDR

Catalog HY14-2500/US

Technical Information
General Description
Series ZDR pilot operated pressure reducing valves
are designed for maximum flow rates.

B

The reducing function can be located in the ports P, A
or B. The sizes NG06 and NG10 are equipped with an
integral return flow check valve (reducing function in A
or B).
ZDR-P01

ZDR-B01

Features

•
•

High flow capacity.
Sizes::
– ZDR01 – NFPA D03 / NG6 / CETOP 3
– ZDR02 – NFPA D05 / NG10 / CETOP 5

•

With integral return flow check valve.
ZDR-B02

Specifications
General
Size
Mounting Interface

NG6

NG10

DIN 24340 A6
ISO 4401
NFPA D03
CETOP RP 121

DIN 24340 A10
ISO 4401
NFPA D05
CETOP RP 121

Mounting Position

Unrestricted

Ambient Temperature Range

-20°C to +50°C (-4°F to +122°F)

Hydraulic
Maximum Operating Pressure

up to 350 Bar (5075 PSI); ZDR-AR / BR up to 315 Bar (4568 PSI)

Nominal Flow

80 LPM (21.2 GPM)

120 LPM (31.7 GPM)

Pilot Oil

0.2 LPM (0.1 GPM)

0.3 LPM (0.1 GPM)

Fluid

Hydraulic oil as per DIN 51524 ... 51525

Fluid Temperature

-20°C to +80°C (-4°F to +176°F)

Viscosity

10 to 650 cSt / mm2/s (46 to 3013 SSU)
30 cSt / mm2/s (139 SSU)

Permitted
Recommended

Filtration

ISO Class 4406 (1999) 18/16/13 (acc. NAS 1638: 7)

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Sandwich Valves
Series ZDR

Catalog HY14-2500/US

Technical Information
Ordering Information
ZDR
Pressure
Reducing
Valve

Port
Option

Size

Pressure
Range

Code Description
01
NFPA D03 / NG6
02
NFPA D05 / NG10
Code Size
P
01/02
			
AR
01/02
			
BR
01/02
			

Description
Pressure reducing in P
with pressure gauge port M
Pressure reducing in A
with check valve
Pressure reducing in B
with check valve

Code
1
5*

S0

D

Hexagon Screw
with Lock Nut

Design
Series

Description
up to 100 Bar (1450 PSI)
up to 350 Bar (5075 PSI)

Seal

Code
1
5

Description
Nitrile
Fluorocarbon

* AR/BR 325 Bar (4568 PSI)

Weight:
ZDR*01
ZDR*02

ZDR01

ZDR02

Performance Curves
ZDR-P/AR/BR01

ZDR-P/AR/BR02

ZDR-P		ZDR-AR/BR
1.6 kg (3.5 lbs.)
1.8 kg (4.0 lbs.)
2.9 kg (6.4 lbs.)
3.0 kg (6.6 lbs.)

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B

Catalog HY14-2500/US

Dimensions

Sandwich Valves
Series ZDR

ZDR01 – Inch equivalents for millimeter dimensions are shown in (**)

B

Seal Kit
Seal

Order Code

1

098-91184-0

5

098-91185-0

Complete Cartridge
Seal

Order Code

1

098-91102-0

5

098-91103-0

ZDR02 – Inch equivalents for millimeter dimensions are shown in (**)

Seal Kit
Seal

Order Code

1

098-91182-0

5

098-91183-0

Complete Cartridge
Seal

Order Code

1

098-91102-0

5

098-91103-0

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Sandwich Valves
Series ZDV

Catalog HY14-2500/US

Technical Information
General Description
Series ZDV pilot operated pressure relief valves are
designed for maximum flow rates.
The relief function can be located between P and T,
A and T, B and T or A and T + B and T for typical pressure relief functions.

B

For a pre-charge function the ZDV can be ordered with
pressure function between A and B + B and A.

ZDV-P01

ZDV-B01

Features

•
•
•

High flow capacity.
Pressure function in P, A, B or A + B.
Sizes:
– ZDV01 – NFPA D03 / NG6 / CETOP 3
– ZDV02 – NFPA D05 / NG10 / CETOP 5
ZDV-B02

Ordering Information
ZDV
Pressure
Relief
Valve

Port
Option

Size

Pressure
Range

Code Description
01
NFPA D03 / NG6
02
NFPA D05 / NG10

Code
1
5*

S0

D

Hexagon Screw
with Lock Nut

Design
Series

Description
up to 70 Bar (1015 PSI)
up to 350 Bar (5075 PSI)

Seal

Code
1
5

Description
Nitrile
Fluorocarbon

* ABS 315 Bar (4568 PSI)
Code
P
A
B
AB
ABS

Size
01/02
01/02
01/02
01/02
01/02

Description
P–T
A–T
B–T
A–T&B–T
A–B&B–A

Weight:
ZDV*01
ZDV*02

One Cartridge
1.6 kg (3.5 lbs.)
3.0 kg (6.6 lbs.)

Two Cartridges
2.5 kg (5.5 lbs.)
3.7 kg (8.2 lbs.)

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Sandwich Valves
Series ZDV

Catalog HY14-2500/US

Technical Information
Ordering Information
ZDV01

B

ZDV02

Specifications
General
Size
Mounting

Mounting Position
Ambient Temperature Range
Hydraulic
Maximum Operating Pressure
Nominal Flow

NG6

NG10

DIN 24340 A6
ISO 4401
NFPA D03
CETOP RP 121

DIN 24340 A10
ISO 4401
NFPA D05
CETOP RP 121

Unrestricted
-20° to +50°C (-4°F to +122°F)
up to 350 Bar (5075 PSI); ZDV*ABS up to 315 Bar (4568 PSI)
80 LPM (21.2 GPM)

Fluid
Fluid Temperature

Hydraulic oil as per DIN 51524 ... 51525
-20° to +80°C (-4°F to +176°F)

Viscosity

10 to 650 cSt / mm2/s (46 to 3013 SSU)
30 cSt / mm2/s (139 SSU)

Permitted
Recommended

Filtration

140 LPM (37.0 GPM)

ISO Class 4406 (1999) 18/16/13 (acc. NAS 1638: 7)

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Catalog HY14-2500/US

Performance Curves

Sandwich Valves
Series ZDV
ZDV-AB01

ZDV-P/A/B/ABS01

B

ZDV-P/A/B/AB02

ZDV-ASB02

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Catalog HY14-2500/US

Dimensions

Sandwich Valves
Series ZDV

ZDV01 – Inch equivalents for millimeter dimensions are shown in (**)

B

Seal Kit
Seal

Order Code

1

098-91182-0

5

098-91183-0

Complete Cartridge
Seal

Order Code

1

098-91116-0

5

098-91117-0

ZDV02 – Inch equivalents for millimeter dimensions are shown in (**)

Seal Kit
Seal

Order Code

1

098-91076-0

5

098-91077-0

Complete Cartridge
Seal

Order Code

1

098-91116-0

5

098-91117-0

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Sandwich Valves
Series ZNS

Catalog HY14-2500/US

Technical Information
General Description
Series ZNS counterbalance valve controls the actuator
movement at overrunning loads.
The return flow from the actuator is piloted and controlled by the inlet flow to the actuator, ensuring a
cavitation-free lowering of the load.

B

The counterbalance valve operates as a pressure relief
valve. The setting pressure is lowered by the pressure
in the inlet line. To ensure safe load holding the setting
pressure should be approximately 30% higher than the
max. load pressure.

ZNS-AB01

ZNS-B01

Features

•
•
•
•

Controlled movement loads.
Load holding via leak-free poppet valve.
Secondary relief protection for the actuator.
Sizes:
ZNS-B01

ZNS*01 – NFPA D03 / NG6 / CETOP 3
ZNS*02 – NFPA D05 / NG10 / CETOP 5

Ordering Information
ZNS
Counterbalance
Valve
Code
A
B
AB

Port
Option
Description
in A
in B
in A and B

Size

Pressure
Range

Code Description
01 NFPA D03 / NG6
02 NFPA D05 / NG10

S0

D

Hexagon Screw
with Lock Nut

Design
Series

Code Description
2
70 to 175 Bar (1015 to 2538 PSI)
140 to 350 Bar (2030 to 5075 PSI)
5 1)
1)

Seal

Code
1
5

Description
Nitrile
Fluorocarbon

ZNS02 to 315 Bar (4568 PSI)
Weight:
ZNS*01
ZNS*02

ZNS01

1 cartridge
1.3 kg (2.9 lbs.)
1.6 kg (3.5 lbs.)

2 cartridges
3.0 kg (6.6 lbs.)
3.9 kg (8.6 lbs.)

ZNS02

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Sandwich Valves
Series ZNS

Catalog HY14-2500/US

Specifications
Specifications
General
Size
Mounting Interface

B

NG6

NG10

DIN 24340 A6
ISO 4401
NFPA D03

DIN 24340 A10
ISO 4401
NFPA D05

Mounting Position

Unrestricted

Ambient Temperature Range

-20°C to +50°C (-4°F to +122°F)

Hydraulic
Maximum Operating Pressure

350 Bar (5075 PSI)

Pressure Range

175 Bar (2538 PSI), 350 Bar (5075 PSI)

Pilot Ratio

4.5 : 1

Leakage

On request

315 Bar (4568 PSI)

Nominal Flow

60 LPM (15.9 GPM)

120 LPM (31.7 GPM)

Opening Pressure

0.3 LPM (0.1 GPM)

0.3 LPM (0.1 GPM)

Fluid

Hydraulic oil as per DIN 51524 ... 51525

Fluid Temperature

-20°C to +80°C (-4°F to +176°F)

Viscosity

10 to 650 cSt / mm2/s (46 to 3013 SSU)
30 cSt / mm2/s (139 SSU)

Permitted
Recommended

Filtration

ISO Class 4406 (1999) 18/16/13 (acc. NAS 1638: 7)

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Sandwich Valves
Series ZNS

Catalog HY14-2500/US

Performance Curves
ZNS01

B

ZNS02

All characteristic curves measured with HLP46 at 50°C (122°F).

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Catalog HY14-2500/US

Dimensions

Sandwich Valves
Series ZNS

ZNS01 – Inch equivalents for millimeter dimensions are shown in (**)

B
Seal Kit
Seal

Order Code

1

098-91153-0

5

098-91154-0

Complete Cartridge
Seal

Order Code

1

517-01017-2

5

517-00448-8

ZNS02 – Inch equivalents for millimeter dimensions are shown in (**)

Seal Kit
Seal

Order Code

1

098-91155-0

5

098-91183-0

Complete Cartridge
Seal

Order Code

1

517-00449-8

5

517-00450-8

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Parker Hannifin Corporation
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Elyria, Ohio, USA

Sandwich Valves
Series ZRD

Catalog HY14-2500/US

Technical Information
General Description
Series ZRD throttle check valves are designed for
maximum flow rates.
The throttle check function can be located in port A or
B as well as in A + B. Meter-in or meter-out functionality can be selected by model code.

B

A low flow / high resolution version in NFPA 03 / NG6
for sensitive shifting time adjustment of pilot operated
directional control valves is available on request.

ZRD-ABZ01

ZRD-AA02

Features

•
•
•

High flow capacity.
Various functional arrangements.
Sizes:
– ZRD01 – NFPA D03 / NG6 / CETOP 3
– ZRD02 – NFPA D05 / NG10 / CETOP 5
ZRD-AA02

Ordering Information
ZRD
Throttle Valve
with Check

Meter
Option
Code
AA
		
AZ
		
BA
		
BZ
		
ABA
		
ABZ
		

Description
Meter-out
Control in A
Meter-in
Control in A
Meter-out
Control in B
Meter-in
Control in B
Meter-out
Control in A and B
Meter-in
Control in A and B

Size

Code
01
02

S0

D

Hexagon
Screw with
Lock Nut

Design
Series

Seal
Code
1
5

Description
NFPA D03 / NG6
NFPA D05 / NG10

Weight:
ZRD*01
ZRD*02

1 Cartridge
1.2 kg (2.6 lbs)
2.8 kg (6.2 lbs.)

Description
Nitrile
Fluorocarbon

2 Cartridges
1.3 kg (2.9 lbs)
2.9 kg (6.4 lbs.)

ZRD01

ZRD02
(continued on
next page)

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Sandwich Valves
Series ZRD

Catalog HY14-2500/US

Ordering Information
Ordering Information
ZRD02

B

Specifications
General
Size
Mounting

NG6

NG10

DIN 24340 A6
ISO 4401
NFPA D03
CETOP RP 121

DIN 24340 A10
ISO 4401
NFPA D05
CETOP RP 121 5

Mounting Position

Unrestricted

Ambient Temprature

-20°C to +50°C (-4°F to +122°F)

Hydraulic
Max. Operating Pressure
Nominal Flow
Leakage
Cracking Pressure

350 Bar (5075 PSI)
80 LPM (21.2 GPM)

160 LPM (42.3 GPM)

—

—

—

—

Fluid

Hydraulic oil as per DIN 51524 ... 51525

Fluid Temperature

-20°C to +80°C (-4°F to +176°F)

Viscosity

Permitted
Recommended

Filtration

10 to 650 cSt / mm2/s (46 to 3013 SSU)
30 cSt / mm2/s (139 SSU)
ISO 4406 (1999) 18/16/13 (acc. NAS 1638: 7)

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Catalog HY14-2500/US

Performance Curves

Sandwich Valves
Series ZRD

p/Q Performance Curves
ZRD01

B

ZRD02

* Throttle closed
Fluid Viscosity 30 cSt @ 50°C (122°F)

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Sandwich Valves
Series ZRD

Catalog HY14-2500/US

Dimensions
ZRD01
Inch equivalents for millimeter dimensions are shown in (**)

Seal Kit
Seal
Order Code
1
098-91096-0
5
098-91097-0
Complete Cartridge
Order Code
098-91119-0
O-ring Plate
Order Code
S26-27553-0

B

ZRD02
Inch equivalents for millimeter dimensions are shown in (**)
Seal Kit
Seal
Order Code
1
098-91098-0
5
098-91099-0
Complete Cartridge
Order Code
098-91120-0
O-ring Plate
Order Code
S16-85742-0

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Sandwich Valves
Series ZRE

Catalog HY14-2500/US

Technical Information
General Description.
Series ZRE pilot operated check valves are designed
for maximum flow rates and long life time.
The valves are typically used in combination with spool
type directional control valves to ensure leak free positioning of the actuator.

B

The inlet flow is free while the outlet flow is blocked.
Pressure in the inlet line opens the check valve and
allows free outlet flow.

ZRE-B01

ZRE-A02

Features

•
•
•

High life time.
Check function in A, B or A + B.
Sizes:
– ZRE01 – NFPA D03 / NG6 / CETOP 3
– ZRE02 – NFPA D05 / NG10 / CETOP 5
ZRE-A02

Ordering Information
ZRE
Pilot Operated
Check Valve

Port
Option
Code
A
B
AB
		

Description
Blocked in A
Blocked in B
Blocked in A
and B

Size

Code
01
02

Design
Series

Description
NFPA D03 / NG6
NFPA D05 / NG10

Code
D
E

Description
Size 01
Size 02

Seal

Code
1
5
Weight:
ZRE*01
ZRE*02

ZRE01

Description
Nitrile
Fluorocarbon

1.2 kg (2.6 lbs)
3.1 kg (6.8 lbs.)

ZRE02

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Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series ZRE

Catalog HY14-2500/US

Technical Information
Specifications
General
Size

B

Mounting Interface

NG6

NG10

DIN 24340 A6
ISO 4401
NFPA D03
CETOP RP 121

DIN 24340 A10
ISO 4401
NFPA D05
CETOP RP 121 5

Mounting Position

Unrestricted

Ambient Temprature

-20°C to +50°C (-4°F to +122°F)

Hydraulic
Max. Operating Pressure

350 Bar (5075 PSI)

Nominal Flow
Opening Ratio
(Pilot Cone/Main Cone)
Cracking Pressure

60 LPM (15.9 GPM)

120 LPM (31.7 GPM)

1:6

1:6

1.2 Bar (17.4 PSI)

2.0 Bar (29.0 PSI)

Fluid

Hydraulic oil in accordance with DIN 51524 ... 51525

Fluid Temperature

-20°C to +80°C (-4°F to +176°F)

Viscosity
Permitted
Recommended

10 to 650 cSt / mm2/s (46 to 3013 SSU)
30 cSt / mm2/s (139 SSU)

Filtration

ISO 4406 (1999) 18/16/13 (acc. NAS 1638: 7)

Performance Curves
p/Q
ZRE01

ZRE02

Fluid Viscosity 30 cSt at 50°C (122°F).
Denison Sandwich.indd, dd

B58

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series ZRE

Catalog HY14-2500/US

Dimensions
ZRE01
Inch equivalents for millimeter dimensions are shown in (**)

Seal
1
5

Seal Kit
Order Code
098-91088-0
098-91089-0

Seal
1
5

Seal Kit
Order Code
098-91090-0
098-91091-0

ZRE02
Inch equivalents for millimeter dimensions are shown in (**)

Denison Sandwich.indd, dd

B59

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

B

Sandwich Valves
Series ZRV

Catalog HY14-2500/US

Technical Information
General Description
Series ZRV direct operated check valves have a cartridge type insert to provide zero leakage and high life
time.

B

The check function can be located in the P-port or in
the T-port.
ZRV-P02

ZRV-P02

Features

•
•
•
•

Leakage-free seat.
High life time.
Cracking pressure 0.5 Bar (7.25 PSI).
Sizes:
– ZRV01 – NFPA D03 / NG6 / CETOP 3
– ZRV02 – NFPA D05 / NG10 / CETOP 5
ZRV-P02

Ordering Information
ZRV
Direct Operated
Check Valve

Port
Option
Code
P
T

Weight:
ZRV*01
ZRV*02

Description
Blocked in P
Blocked in T

Size

Code
01
02

Description
NFPA D03 / NG6
NFPA D05 / NG10

0.7 kg (1.5 lbs)
2.0 kg (4.4 lbs.)

ZRV01

ZRV02

Denison Sandwich.indd, dd

B60

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series ZRV

Catalog HY14-2500/US

Technical Information
Specifications
General
Size
Mounting Interface

NG6

NG10

DIN 24340 A6
ISO 4401
NFPA D03
CETOP RP 121

DIN 24340 A10
ISO 4401
NFPA D05
CETOP RP 121 5

Mounting Position

Unrestricted

Ambient Temprature

-20°C to +50°C (-4°F to +122°F)

Hydraulic
Max. Operating Pressure

350 Bar (5075 PSI)

Nominal Flow
Cracking Pressure

40 LPM (10.6 GPM)

100 LPM (26.5 GPM)

0.5 Bar (7.25 PSI)

0.5 Bar (7.25 PSI)

Fluid

Hydraulic oil as per DIN 51524 ... 51525

Fluid Temperature

-20°C to +80°C (-4°F to +176°F)

Viscosity
Permitted
Recommended

10 to 650 cSt / mm2/s (46 to 3013 SSU)
30 cSt / mm2/s (139 SSU)

Filtration

ISO 4406 (1999) 18/16/13 (acc. NAS 1638: 7)

p/Q Performance Curves
ZRV P/T01

ZRV P/T02

Denison Sandwich.indd, dd

B61

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

B

Catalog HY14-2500/US

Dimensions

Sandwich Valves
Series ZRV

ZRV01 – Inch equivalents for millimeter dimensions are shown in (**)

B

ZRV02 – Inch equivalents for millimeter dimensions are shown in (**)

Denison Sandwich.indd, dd

B62

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM, CPOM, FM, PRDM, PRM, RM, Z**

Catalog HY14-2500/US

Installation Information
CAUTION:
Sandwich Installation

System Cleanliness
Any hydraulic system that includes Parker valves
should be carefully protected against dirt and fluid
contamination. Life of the valves, as well as of all other
components, will be greatly lengthened. Operation will
be smoother and more precise. Maintenance and repairs will be reduced. Lost production because of low
pressure and flow will be minimized. Fluid contamination should be maintained to less than 500 particles
larger than 10 micrometers per milliliter of fluid (SAE
class 4 or better/ISO Code 16/13).

Prior to installation of Sandwich valves, please review
flow paths. Due to the reversibility of the DO3 size, incorrect installation will alter the hydraulic circuit. Care
must be taken during installation to insure that the
Sandwich is installed in compliance with the hydraulic
schematic. Please consult with your Parker representative with any questions that may arise.

Hydraulic Fluids
Parker recommends using top-quality hydraulic
fluids having a viscosity range of 32 to 54 cSt
(150 to 250 SSU) at 38°C (100°F). The absolute
viscosity range should be 16 to 220 cSt (80 to 1000
SSU). Fluids should have highest anti-wear characteristics and be treated to avoid rust and oxidation.

Pressure Ratings
Unless otherwise specified, all Parker Sandwich
valves have continuous duty pressure rating as shown
in this catalog.

Seals

Special Requirements

When used with water-glycol, water/oil emulsions, and
high-grade petroleum base hydraulic fluids, Parker
standard nitrile seals are suitable.

Consult your Parker representative for factory recommendations on such situations as:

•
•
•

When using phosphate ester fluids or their blends,
specify Parker optional seals made of fluorocarbon.
Synthetic fire-resistant fluids require special seal materials which your Parker representative can recommend.

Installations that will operate at pressures higher than
published catalog ratings.
Use of hydraulic fluids which do not meet our recommended specifications.

Torque Specifications

Operations where fluid temperature will exceed 121°C
(250°F).

The recommended torque valves are for the bolts
which mount the valve to the manifold or subplate are
as follows:

Recommended Mounting Surface
Surface must be flat within .0004 inch T.I.R. and
smooth with 32 micro-inch.

Size
D03
D05
D07
D08

Torque Valve
5.7 N.m. (50 in.-lbs.)
16.3 N.m. (12 ft.-lbs.)
63.0 N.m. (46.5 ft.-lbs.)
108.5 N.m. (80 ft.-lbs.)

Denison Sandwich.indd, dd

B63

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

B

Sandwich Valves
Series CM, CPOM, FM, PRDM, PRM, RM, Z**

Catalog HY14-2500/US

Installation Information

Mounting Pattern – NFPA D03, CETOP 3 & NG6
Inch equivalents for millimeter dimensions are shown in (**)
51.00
(2.000)
min.

M5-0.8 (10-24) UNC-2B thread
x 10.40 (.410) min. thread depth
4-holes

40.50
(1.594)

0.28
(0.011)

33.00
(1.300)

B

21.50
(0.850)

0.75
(0.030)

B
O 7.5 (.295) max.
P.A.B. & T ports

A

43.00
(1.70)
min.
31.75
(1.250)

A B

30.20
(1.190)

5.10
(0.200)

T

15.50
(0.610)

31.00
(1.220)

S

0.56
(0.022)

L

A B

A
25.90
(1.020)

O 3.86/4.27 (.152/.168)
x 4.00 (.160) min. depth

B

0.28
(0.011)

P

12.70
(0.500)

A B

S

4.80 (0.190) R. max. typ.
4 places

Mounting Pattern – NFPA D05, CETOP 5 & NG10
Inch equivalents for millimeter dimensions are shown in (**)

54.0
(2.13)
50.8
(2.00)
27.0
(1.06)
21.4
(0.84)

6.4
(0.25)

91.2
(3.62)

-B-

37.3
(1.47)
16.7
(0.66)
3.2
(0.13)

O 11.2 (0.441) max.
P.A.B. & T ports

-A-

75.0
(2.95)

46.0
(1.81)

0.56
(0.022)

P

32.5
(1.28)

A
T

B
T

L

A B

¼ – 20 UNC – 2B (M6 x 1) th'd
x 9.7 (0.38) min. th'd depth
4 places
0.28
(0.011) S A B

Denison Sandwich.indd, dd

B64

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA

Sandwich Valves
Series CM, CPOM, FM, PRDM, PRM, RM, Z**

Catalog HY14-2500/US

Installation Information

Mounting Pattern – NFPA D07, CETOP 7 & NG16
Inch equivalents for millimeter dimensions are shown in (**)

B

Mounting Pattern – NFPA D08, CETOP 8 & NG25
Inch equivalents for millimeter dimensions are shown in (**)
152.4
(6.00)
130.2
(5.13)
100.8
(3.97)
77.0
(3.03)

17.5
(0.69)

4.8
(0.19)

29.4
(1.16)

-B112.7
(4.44)
94.5
(3.72)

½ – 13 UNC – 2B x 22.22 min th'd dp.
(M12)
(0.875)
6 holes

53.2
(2.09)

0.28
(0.011)

17.5
(0.69)

-A-

130.0
(5.12)

92.1
(3.63)

74.6
(2.94)

S

A B

O 11.2 (0.441) max.
3 holes
0.56
(0.022)

73.0
(2.88)

L

A B

O 23.42 (0.922) max.
4 holes
0.56
(0.022)

L

A B

O 0.288 / 272 x 0.31 min dp.
(7.32 / 6.91) (8)
2 holes
0.28
(0.011)

L

A B

Denison Sandwich.indd, dd

B65

www.comoso.com

Parker Hannifin Corporation
Hydraulic Valve Division
Elyria, Ohio, USA



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