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Continue to ChatASCO ZNG553A422 - G1/2, 5/2 Stainless Steel Solenoid, Air Piloted & Return Valve (bistable) https://www.valves-direct.com/product/asco-zng553a422-g1-2-5-2-stainless-steel-solenoid-air-piloted-return-valve-bistable/