Bilge Pump Hose CHECK VALVE One Way NON RETURN Valve 12mm 19mm 25mm 1/2 3/4 1"
Used in Bilge Pump Hose lines and other non-pressurised hose lines. Multiple Hose Barb Sizes, just use the hose barb size on the reducing ends as required. Barb Sizes: 12mm 19mm 25mm ( 1/2", 3/4" or 1").