Lalizas Diaphragm Bilge Hand Pump - 0,4lt Per StrokeIdeal for use where battery power is not available or as a backup to electric pumps, the Lalizas diaphragm bilge hand pump is easy to use and has a capacity of 6,5 gallons at 60 strokes. It features a built in non return valve, which can be easily removed with the quick release clip and two position handle for convenient use, depending on your requirements. Additionally, its outlet connection allows the use of either a 3 4 or a 1 hose.