SOLENOID OPERATED DIRECTIONAL 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 44 / 12-2022
TT-S2A PILOT OPERATED POPPET, 2 WAY NORMALLY CLOSED
DESCRIPTION
12 size, 1 1/16-12 thread, “TWELVE” series, solenoid operated, 2 way normally closed, pilot operated poppet
valve with reverse ow de-energized.
OPERATION
When de-energized the TT-S2A blocks ow from (1) to (2) and allows reverse ow from (2) to (1). When energized
the valve allows ow from (1) to (2) and restricts ow from (2) to (1).
OPERATION OF MANUAL OVERRIDE OPTION: to override, pull knob out. On the detented version, after
pulling knob out twist 180 degrees and release. The valve will remain in that position.
FEATURES
• Hardened parts for long life.
• Efcient wet-armature construction.
• Cartridges are voltage interchangeable.
• Manual override option.
• Industry common cavity.
• Unitized, molded coil design.
• Continuous duty rated solenoid.
• Optional coil voltages and terminations.
• Optional “I” Coil: Weatherproof, Thermal Shock, Immersion Safe.
Nominal Flow 25 GPM (95 LPM)
Rated Operating Pressure 3000 PSI (207 bar)
Typical Internal Leakage (150 SSU) 0-5 drops/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 .49 lbs (.22 kg)
Operating Fluid Media General Purpose Hydraulic Fluid
Cartridge Torque Requirements 70 ft-lbs (94.9 Nm)
Coil Nut Torque Requirements 4-6 ft-lbs (5.4-8.1 Nm)
Cavity TWELVE 2W
Cavity Tools Kit
(form tool, reamer, tap) 40500032
Seal Kit 21191300
VALVE SPECIFICATIONS
Actual Test Data (Cartridge Only)
0
50
100
150
200
250
0 10 20 30 40
Flow (GPM)
0
5
10
15
0 25 50 75 100 125 150
Flow (LPM)
Port 1 to 2 (eng) Port 2 to 1 (de-eng)
Pressure Drop (PSI)
Pressure Drop (bar)
PERFORMANCE
HYDRAULIC SYMBOL
2
1