MECHANICAL DIRECTIONAL CONTROLS
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 specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
W 51 / 12-2022
DF-CPB PILOT OPERATED CHECK VALVE, GUIDED BALL
HYDRAULIC SYMBOL
PERFORMANCE VALVE SPECIFICATIONS
DESCRIPTION
10 size, 7/8-14 thread, “Delta” series, pilot operated, ball check valve.
OPERATION
The DF-CPB allows free ow to pass from (2) to (1) and blocks ow from (1) to (2). When pilot pressure is applied
to port (3) the valve allows free ow from (1) to (2).
FEATURES
• Hardened parts for long life.
• Industry common cavity.
Nominal Flow 8 GPM (30 LTR/M) from (1) to (2)
5 GPM (19 LTR/M) from (2) to (1)
Rated Operating Pressure 3500 PSI (241 bar)
Typical Internal Leakage (150 SSU) 0-5 drops/min
Pilot Ratio 4:1
Viscosity Range 36 to 3000 SSU (3 to 647 cSt)
Filtration ISO 18/16/13
Media Operating Temp. Range -40° to 250°F (-40° to 120°C)
Weight .19 lbs (.09 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 30 ft-lbs (40.6 Nm)
Cavity DELTA 3W
Cavity Form Tool (Finishing) 40500001
Seal Kit 21191202
Actual Test Data (Cartridge Only)
0
50
100
150
200
250
300
0 2 4 6 8 10 12
0
5
10
15
20
0 10 20 30 40
Free Flow 2 to 1 Piloted Open 1 to 2
Pressure Drop (PSI)
Flow (GPM)
Pressure Drop (bar)
Flow (LPM)
For sealed pilot piston consult factory.
0.030″ to 0.060″ diameter orice recommended
in the feed line to port #3.
MECHANICAL DIRECTIONAL CONTROLS
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 specications/application data shown in our catalogs and data sheets are intended only as a general guide for the product described (herein). Any specic application should not be undertaken
without independent study, evaluation, and testing for suitability.
W 51 / 12-2022
DIMENSIONS
ORDERING INFORMATION
DF-CPB – – –
OPTIONS BODIES
Buna Standard 00 Blank Without Body
Viton Standard V0 N 3/8” NPTF Ports
S #6 SAE Ports
CRACK RESSURE
0025 25 PSI
± 10%
