Whale 1 inch (25mm) Diverter Valve, Main Body: Acetal, Teflon®, Handle: PTFE Polyester. Allows one pump to draw from two locations. Robust, reliable design. Teflon® lubricated non-stick operation. Percision machined for odour proof seal. Withstands sewage/black waste, saltwater, and bilgewater. Modle also available in 1-1/2 inch (38mm) hose connection.