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Companies
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Schrader Bellows
- Cuyahoga Falls, OH, USA
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Shako Co. Ltd.
- Taoyuan Hsien, Taiwan
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Shavo Norgren India Pvt Ltd.
- Mumbai, Maharastra, India
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Skinner Valve
- Madison, MS
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SMC Corporation of America
- Indianapolis, IN, USA
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SMS-TORK Ltd. Sti
- Istanbul, Turkey
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Snap-tite
- Erie, PA
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Spartan Scientific
- Boardman, OH
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The Lee Co.
- Westbrook, CT
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TPC Pneumatics
- Santa Fe Springs, CA
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Valcor Engineering
- Springfield, NJ
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Versa Products. Co., Inc.
- Paramus, NJ
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Waircom Corporation Inc.
- Granby, QC. CAN
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More Information about Solenoid Air Valves
Solenoid air valves electrically control compressed air.
Direct solenoid valves feature a solenoid coil that shifts a spool or poppet directly. A spring returns the spool once the electrical current is removed. Large direct-solenoid valves use strong, high-power solenoids.
Solenoid pilot valves use a small pilot valve to control a larger valve. The pilot valve directs air pressure to the end of the spool or poppet, shifting it to the energized position. A spring at the opposite end of the spool returns the spool when the pilot valve is de-energized and pilot pressure is removed.
Some manufactures offer a 4-way pilot that uses a 4-way valve to shift the spool. The advantage of the 4-way pilot is that there is no return-spring on the spool since air pressure is used to shift the spool in both directions.
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