PS Series Self-sucking series pumps are constituted with clean water pump, Non-return valve and air-water separation room which located on the upside of the pump body. During operating, no need to use foot valve, what you should do is just to leave some water in the pump body, after a few minutes running, the water will be sucked out relying on the pump body itself's effect. This series pumps are ideal equipments for household well water pumping.