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Stainless Steel Solenoid Valve Specifications: 3S020-035 Series

Valve Model



Valve Type

3 Way Normally Closed (NC) or Normally Open (NO)


Direct Acting

Cv (Orifice)

0.14 (2mm NC Port, 2mm NO Port)

0.5 (3.5mm NC Port, 2.5mm NO Port)

Operating Pressure (PSI)

Vacuum to 100 PSI

Vacuum to 60 PSI

Operating Temperature (°C)

-10 to 120°C 

Port Size (NPT)


Body Materials

Stainless Steel

Seal Materials:

Viton (Options: EPDM, NBR)

Coil Protection Insulation Class

H Class IP65 

Coil Duty

100% ED

Coil Power


Electrical Connections



Air, Liquid, Vacuum 

2/3 Direct Acting Solenoid Valve Normally Closed (3S035 Series)

As shown below, when the valve is de-energized (left diagram), the plunger under the force of spring seals the main orifice, and port CYL connects with port EX. When the valve is energized (right diagram), the coil magnetic force pulls back the plunger and closes port EX, and connects port IN to CYL.



Electrical Coil Connections

For DIN Coil

To connect DIN coil:
1. Remove the Philip screw from the plastic housing and unplug it from the DIN coil.
2. From the screw opening, push the terminal block out from the plastic housing.
3. Note the 1, 2 and ground markings on underside of DIN enclosure.
4. For DC DIN Coil, Connect 1 to Positive, 2 to Negative.
5. For AC DIN Coil, connect 1 to HOT wire, 2 to Neutral wire, and if required connect ground to ground wire.

For Grommet Coil

To connect Grommet coil:
1.  For DC Coil, connect one of the two wires to Positive, and the other wire to Negative.
2. For AC Coil, connect one of the two wires to HOT wire, and the other wire to neutral wire.

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Sizto Tech Corporation 892 Commercial Street, Palo Alto, CA 94303 USA
To order or locate a stocking distributor in your area, call 650-856 8833, Fax to 650- 856
Toll Free: 866-9620170, or email Sales@StcValve.com   
Copyright © 2001-2016 Sizto Tech Corporation, USA, All rights reserved. Last modified: June 15, 2016,
Information contained herein may be changed without prior notification