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-PSO SEQUENCE VALVE, 2 WAY NORMALLY OPEN, EXTERNAL PILOT
DESCRIPTION
10 size, 7/8-14 thread, “Delta” series, 2 way normally open sequence valve, external pilot.
OPERATION
The DG-PSO in neutral (un-piloted), allows ow between (3) and (2) bi-directionally. The spring chamber is
constantly vented at (1). On attainment of a predetermined pressure at (4), the cartridge shifts to block ow from
(3) to (2).
Note: that the backpressure value at (1) must be added to the selected pressure setting to determine pilot
pressure necessary to close 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 LTR/M)
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 .62 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
25
50
75
100
125
150
20 4 6 8 10 12
Pressure Drop (PSI)
0
Flow (GPM)
5
10
0 01 20 03 40
Pressure Drop (bar)
Flow (LPM)
Port 2 to 3
HYDRAULIC SYMBOL
PERFORMANCE
Actual Test Data (Cartridge Only)
Orice .030 to .060 diameter recommended
beneath port (4).