New Design Comes with Back Flow Prevention (Outlet Check Valve) Connections : For 19mm (3/4") bore hose. Dimensions : 107mm high, 64mm x 74mm. Current Draw : 0.8(amps) Fuse Size : 2 amp Output: Up to 31 litres/minute (7 gallons/minute) at 24v, without check valve. Max. recommended discharge head 2m. Fully automated bilge pump with computerised operation. Tough plastic body with integral strainer.