4484 Boeing Drive Rockford, IL 61109 • USA • Phone +1 (815) 397-6628 • Fax +1 (815) 397-2526
mail: delta@delta-power.com • www.delta-power.com
WARNING: the specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
W 51 / 2-2023
PQ-CDP DOUBLE PILOT OPERATED CHECK VALVE
MECHANICAL DIRECTIONAL CONTROLS
MECHANICAL DIRECTIONAL CONTROLS
Delta Power Company
4484 Boeing Drive - Rockford, IL 61109
WARNING: The specifications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described
(herein). Any specific application should not be undertaken without independent study, evaluation, and testing for suitability.
Phone: (815) 397-6628 Fax: (815) 397-2526 E-mail: delta@delta-power.com
PQ-CDP Double Pilot Operated Check Valve
DESCRIPTION
8 size, 3/4 -16 thread, “Power” series, double pilot operated check valve.
OPERATION
The PQ-CDP allows flow to pass from (3) to (4) and (2) to (1). The valve blocks flow from (4) to (3) and from
(1) to (2). Blocked flow is released when pilot pressure is applied to the port opposite of (3) and /or (2)
respectively.
The valve has a 3:1 pilot ratio, so at least 1/3 of the load pressure at port (4) or (1) is required at the pilot
line ports (ports (4) or (1) respectively) to open the flow passage to allow flow from port (4) or (1)
respectively.
FEATURES
• Hardened parts for long life.
• Industry common cavity.
NOTE: Maximum 0.438 diameter hole allowed beneath cavity
VALVE SPECIFICATIONS
Nominal Flow
5 GPM (19 LPM)
Rated Operating Pressure
3000 PSI (207 bar)
Typical Internal Leakage
(150 SSU)
0 - 5 drop / min
Viscosity Range
36 to 3000 SSU (3 to 647 cSt)
Filtration
ISO 18/16/13
applications.
Media Operating
Temperature Range
-40° to 250° F (-40° to 120° C)
Weight
0.12 lbs. (0.05 kg)
Operating Fluid Media
General Purpose Hydraulic Fluid
Cartridge Torque
Requirements
25 ft-lbs (34 Nm)
Cavity
POWER 4W
Cavity Form Tool (Finishing)
40500029
PERFORMANCE
Seal Kit
21191112
Actual Test Data (Cartridge Only)
1
2
3
4
4 1
3 2
0 4 8 12 16 20
0
3
6
9
12
0
40
80
120
160
200
0 1 2 3 4 5 6
Flow (LPM)
Pressure Drop (BAR)
Pressure Drop (PSI)
Flow (GPM)
Port 2 to 1 Port 3 to 4
0 4 8 12 16 20
0
3
6
9
12
0
40
80
120
160
200
0 1 2 3 4 5 6
Flow (LPM)
Pressure Drop (BAR)
Pressure Drop (PSI)
Flow (GPM)
PRESSURE DROP - PILOTED
Port 1 to 2 Port 4 to 3
4484 Boeing Drive Rockford, IL 61109 • USA • Phone +1 (815) 397-6628 • Fax +1 (815) 397-2526
mail: delta@delta-power.com • www.delta-power.com
WARNING: the specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
W 51 / 2-2023
MECHANICAL DIRECTIONAL CONTROLS`
MECHANICAL DIRECTIONAL CONTROLS
Delta Power Company
4484 Boeing Drive - Rockford, IL 61109
WARNING: The specifications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described
(herein). Any specific application should not be undertaken without independent study, evaluation, and testing for suitability.
Phone: (815) 397-6628 Fax: (815) 397-2526 E-mail: delta@delta-power.com
DIMENSIONS
ORDERING INFORMATION
PQ-CDP
-
-
-
OPTIONS
BODIES
Buna Standard
00
Blank
Without Body
Viton Standard
V0
N
1/4” NPTF PORT
S
#6 SAE Ports
SPRING BIAS
0020
20 PSI
0050
50 PSI
0100
100 PSI
.25
[6.4]
2.12
[53.9]
.88 HEX
[22.2]
3/4-16 UNF-2A