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Continue to ChatASCO WPG551B418MO 115/50 - 5/2, Bi-Stable, Return, G1/4, Series 551 552 553 - ASCO Pilot Operated Spool Valves https://www.valves-direct.com/product/asco-wpg551b418mo-115-50-5-2-bi-stable-return-g1-4-series-551-552-553-asco-pilot-operated-spool-valves/