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
DG-PSA SEQUENCE VALVE, 4 WAY NORMALLY CLOSED, EXTERNAL PILOT
DESCRIPTION
10 size, 7/8-14 thread, “Delta” series, 4 way external pilot sequence valve.
OPERATION
The DG-PSA in neutral (un-piloted), allows ow between (1) and (2) bidirectionally, while blocking at (3). The
spring chamber is constantly vented at (1). On attainment of a predetermined pressure at (4), the cartridge shifts
to close (1) to (2), while opening (2) to (3). Note that the backpressure value at (1) must be added to the selected
pressure setting to determine pilot pressure necessary to open valve.
FEATURES
• Optional spring ranges to 1500 PSI (103 bar).
• Hardened parts for long life.
• Industry common cavity.
VALVE SPECIFICATIONS
Nominal Flow 10 GPM (38 LPM)
Rated Operating Pressure 3000 PSI (207 bar)
Typical Internal Leakage (150 SSU) 5 cu in/min (82 ml/min)
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 .63 lbs (.28 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 30 ft-lbs (40.6 Nm)
Cavity DELTA 4W
Cavity Form Tool (Finishing) 40500002
Seal Kit 21191214
0
50
100
150
200
0 2 4 6 8 10 12
Pressure Drop (PSI)
0
5
10
0
Flow (GPM)
01 20 03 40
Pressure Drop (BAR)
Port 2 to 3 Port 2 to 1
HYDRAULIC SYMBOL
PERFORMANCE
Actual Test Data (Cartridge Only)
Orice .030 to .060 diameter recommended
beneath port (4).