MECHANICAL PRESSURE 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
PB-RWD DIFFERENTIAL AREA RELIEF VALVE
DESCRIPTION
8 size, 3/4-16 thread, “Power” series, differential area relief valve.
OPERATION
The PB-RWD blocks ow from (1) to (2) until sufcient pressure is present at (1) to force the poppet to open and
allow metered ow from (1) to (2). The cartridge offers smooth transition in response to load changes in common
hydraulic circuits.
FEATURES
• Hardened parts for long life.
• Industry common cavity.
VALVE SPECIFICATIONS
Nominal Flow 8 GPM (30 LPM)
Rated Operating Pressure 3500 PSI (241 bar)
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 .32 lbs (.15 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 25 ft-lbs (34 Nm)
Cavity POWER 2W
Cavity Form Tool (Finishing) 40500005
Seal Kit 21191100
0
500
1000
1500
2000
2500
3000
3500
0
4000
2 4 6 8 10
Pressure Drop (PSI)
0
50
100
150
Flow (GPM)
200
250
0 5 10 2015 25 30 35
Pressure Drop (bar)
Flow (LPM)
Port 1 to 2 Port 1 to 2
HYDRAULIC SYMBOL
PERFORMANCE
Actual Test Data (Cartridge Only)
1
2
Pressure at port (2) must not exceed 2500 PSI.
MECHANICAL PRESSURE 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
PB-RWD – – –
Body Weight: .39 lbs (.18 kg)
OPTIONS BODIES
External Adj. W/Locknut Buna 00 Blank Without Body
External Adj. W/Locknut Viton V0 N 1/4” NPTF Ports
Buna, Knob 0K S #6 SAE Ports
Viton, Knob VK
Internal Adjust Buna 0I
Internal Adjust Viton VI
Tamper Proof Buna 0T PRESSURE RANGE/SETTING
Tamper Proof Viton VT Ext./Int. Adjustable
1000 100 - 1000 PSI
3500 500 - 3500 PSI
Tamper Proof
Fill in 4 Digit Pressure Setting
Example: 0500 - 500 PSI
