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Continue to ChatJOUCOMATIC 010575 - 63mm Bore, Front Trunnion Not ISO Standard, Series 438 Isoclair Round Cylinder (Type CIS) https://www.valves-direct.com/product/joucomatic-010575-63mm-bore-front-trunnion-not-iso-standard-series-438-isoclair-round-cylinder-type-cis/