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Continue to ChatASCO CTNKB551A217 - G1/4, CNOMO Size 30, 5/2 Solenoid, Air Piloted, Spring Return Valve (monostable) https://www.valves-direct.com/product/asco-ctnkb551a217-g1-4-cnomo-size-30-5-2-solenoid-air-piloted-spring-return-valve-monostable/