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Continue to ChatEMERSON ASCO 54400007 - 5/3, 2.5-12, ISO 4, Pressure Held W1, Air Operated, Without Manual Tester, Series 544 Joucomatic Spool Valves - OBSOLETE - REPLACED BY AVENTICS 5814430000 https://www.valves-direct.com/product/asco-54400007-5-3-2-5-12-pressure-held-w1-air-operated-without-manual-tester-series-544-joucomatic-spool-valves/