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Continue to ChatEMERSON ASCO 54400035 - 5/3, ISO 4, Pressure Release W3, Air Operated, With Manual Testers, Series 544 Joucomatic Spool Valves - OBSOLETE - REPLACED BY AVENTICS 5814530000 https://www.valves-direct.com/product/asco-54400035-5-3-2-5-12-pressure-release-w3-air-operated-with-manual-testers-series-544-joucomatic-spool-valves/