K2 Wing Pump The K2 Wing Pump is a very robust and reliable semi rotary double acting pump. A versatile and easy to install hand pump in various applications for the transfer of fuels and thin oils. Features flanged 1″ (25mm) inlet and outlet ports. Achieves a flow rate of 22L/rotation, a max suction of 4m and discharge head of 8m. Constructed with a green cast iron body, steel and brass internals with graphite seals. Pump includes wooden handle. Specifications (Wing Pump K2 – 1″) Output/Transfer Rate: 400ml per stroke / ~22 litres per minute Body Material: Cast Iron Wetted Components: Brass, Steel, Graphite Outlet/Inlet Port Sizes: 25mm/25mm