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Continue to ChatASCO WPG553A465MO - 5/3, G1/2, W1, Pressure Held, Series 551 552 553 - ASCO Pilot Operated NAMUR Spool Valves https://www.valves-direct.com/product/asco-wpg553a465mo-5-3-g1-2-w1-pressure-held-series-551-552-553-asco-pilot-operated-namur-spool-valves/