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Continue to ChatMBV-QS-L/O-L/C - Valve State Locked Open And Closed, Stainless Steel, Q Type, Castell MBV Modular Ball Valve Interlock https://www.concretespares.ie/product/mbv-qs-l-o-l-c-valve-state-locked-open-and-closed-stainless-steel-q-type-castell-mbv-modular-ball-valve-interlock/