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Solenoid Valve Specifications and Dimensions: 2S025-050 Series

Specifications Stainless Steel Direct Acting Valve

Valve Model 2S025-1/4 2S035-1/4 2S040-3/8 2S050-1/4 2S050-3/8
Valve Type 2 Way Normally Closed
Action Direct Acting
Port Size (NPT) 1/4" 1/4" 3/8" 1/4" 3/8"
Cv (Orifice) 0.23 (2.5mm) 0.5 (3.5mm) 0.6 (4mm) 1.0 (5mm) 1.0 (5mm)
Operating Pressure 0 to 200PSI 0 to 170PSI 0 to 150PSI 0 to 80PSI 0 to 80PSI
Operating Temperature 14 to 176°F (with NBR Seal), 5 to 248°F (with Viton Seal)
Body Material Stainless Steel
Seal Materials NBR (Options: Viton, EPDM)
Coil Protection Insulation Class H Class IP65
Coil Duty 100% ED
Coil Power 13 to 20W
Electrical Connections DIN (with LED)
Voltages / Voltage Tolerances 12VDC, 24VDC, 24VAC, 110VAC, 220VAC (50-60Hz)
+10%-5% for DC, +/-10% for AC
Service Air, Gas, Liquid, Vacuum, Steam (with Viton Seal)

The 2S025-050 valves are direct acting solenoid valves that do not require a minimum operating differential pressure. As shown in the diagram below, when the coil is de-energized (left diagram), the plunger rests on the main orifice and is held in place by the plunger spring force, sealing the valve. When the coil is energized (right diagram), the solenoid lifts the plunger and allows the working medium to flow through the orifice. The working medium and flow direction are indicated in purple in the diagram.

ALL standard valves are supplied with Continuous Duty Coils of the proper class of insulation for the service indicated on the valve. It is normal for the coil temperature may become hot after being energized for extended periods. Smoke or burning odor indicates excessive coil temperature and the power should be disconnected to the coil immediately.

SERVICE LIFE: The service life of the solenoid valve depends on the operating conditions such as pressure, temperature, type of medium, and the voltage. Normally the STC solenoid valves are reliable for 1 to 5 million cycles.

Electrical Coil Connections

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