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
DE-RWA DIRECT ACTING RELIEF VALVE
HYDRAULIC SYMBOL
PERFORMANCE VALVE SPECIFICATIONS
DESCRIPTION
10 size, 7/8-14 thread, “Delta” series, direct acting relief valve.
OPERATION
The DE-RWA blocks ow from (2) to (1) until sufcient pressure is present at (2) to force the poppet to open and
allow metered ow from (2) to (1). The cartridge offers smooth transition in response to load changes in common
hydraulic circuits.
FEATURES
• Hardened parts for long life.
• Industry common cavity.
Nominal Flow 8 GPM (30 LPM)
Rated Operating Pressure 4000 PSI (276 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 .51 lbs (.23 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 30 ft-lbs (40.6 Nm)
Cavity DELTA 2W
Cavity Form Tool (Finishing) 40500000
Seal Kit 21191200
Actual Test Data (Cartridge Only)
0
500
1000
1500
2000
2500
3000
3500
0
4000
642 8 10 12
0
50
Pressure Drop (PSI)
Flow (GPM)
100
150
200
250
0 5 1510 2520 30 4035 45
Pressure Drop (bar)
Flow (LPM)
Port 2 to 1 Port 2 to 1
For critical leakage applications consult factory.
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
DE-RWA – – –
OPTIONS BODIES
Buna, External Adj. W/Locknut 00 Blank Without Body
Viton, External Adj. W/Locknut V0 N 3/8” NPTF Ports
Buna, Knob 0K S #8 SAE Ports
Viton, Knob VK
Buna, Internal Adjust 0I
Viton, Internal Adjust VI
Buna, Tamper Proof 0T PRESSURE RANGE/SETTING
Viton, Tamper Proof VT Ext./Int. Adjustment
0500 100 - 500 PSI
3000 100 - 3000 PSI
4000 3000 - 4000 PSI
Tamper Proof
Fill in 4 Digit Pressure Setting
Example: 0500 - 500 PSI
Body Weight: .47 lbs (.21 kg)
