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-RCA GUIDED BALL, 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-RCA 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 12 GPM (45 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 .38 lbs (.17 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
4000
0 2 4
4500
6 8 10 12 14 16
Flow (GPM)
0
50
100
150
200
250
Pressure Drop (PSI)
0
300
5 10 15 20 25 30 35 40 45 50 55 60
Flow (LPM)
Pressure Drop (bar)
2500 3500
Installation Space Saving Product. Cannot be eld
adjusted. Not recommended for crossover relief
valve applications, use DE-RWA.
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-RCA – – –
OPTIONS BODIES
Buna Standard 00 Blank Without Body
Viton Standard V0 N 3/8” NPTF Ports
S #8 SAE Ports
PRESSURE RANGE/SETTING
2500 100 - 2500 PSI
3500 250 - 3500 PSI
Body Weight: .47 lbs (.21 kg)
