In-Line Non-Return Check Valve - 1"In-line non-return valve. Connections for 25mm (1") bore hose.Features: Connections: - for 25mm (1") bore hose Dimensions: - 108mm long, 55mm wide, 50mm high (in-line configuration) Aids pump priming, prevents backflow from pump into bilge Fits into pump suction line Robust plastic construction with nitrile rubber valve Adjustable port configuration for convenient hose angle Actual Weight: 0.11 Kg (Approx. 0.31 Kg packed) WARNING: This product can expose you to chemicals including NICKEL (METALLIC) which is known to the State of California to cause cancer. For more information go to P65Warnings.ca.gov.