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Continue to ChatASCO CFVTG551C504MO - 3/2 NC, 5/2, G1/4, Bi-Stable, Return, Series 551 - ASCO Pilot/Air Operated Brass NAMUR Spool Valves https://www.valves-direct.com/product/asco-cfvtg551c504mo-3-2-nc-5-2-g1-4-bi-stable-return-series-551-asco-pilot-air-operated-brass-namur-spool-valves/