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Solenoid Valve Specifications and Dimensions: 3S020-035 Series


3 way valve symbol
Valve Model 3S020-1/4 3S035-1/4
Valve Type 3 Way Normally Closed (NC) or Normally Open (NO)
Action Direct Acting
Cv (Orifice) Cv = 0.23; Orifice = 2mm Cv = 0.5; Orifice = 3.5mm
Operating Pressure 0 to 100PSI 0 to 60PSI
Operating Temperature 5 to 248°F (-15 to 120°C)
Port Size (NPT) 1/4" 1/4"
Body Material Stainless Steel
Seal Materials Viton (Options: EPDM, NBR)
Coil Protection Insulation Class H Class IP65
Coil Duty 100% ED
Coil Power 13 to 20W
Electrical Connections DIN
Service Air, Gas, Liquid, Vacuum

3S020-035 Series: 2/3 Direct Acting Solenoid Valve Normally Closed
This valve is a three-way, direct-acting valve and does not require a minimum differential pressure to operate. It can be configured as either normally open or normally closed. As shown in the diagrams 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 at the P port. During this time, the exhaust port is connected to the A port. When the coil is energized (right diagram), the solenoid lifts the plunger and allows the working medium to flow from the P to the A port, with the exhaust port sealed.

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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