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Continue to ChatASCO CTNKG553A218 - G1/2, CNOMO Size 30, 5/2 Solenoid, Air Piloted, & Return Valve (bistable) https://www.valves-direct.com/product/asco-ctnkg553a218-g1-2-cnomo-size-30-5-2-solenoid-air-piloted-return-valve-bistable/