Features Automatically start and close the pump according to the set pressure. This water pump pressure switch is applicable for clean water source It has the function of water shortage protection of water pump.For self-priming pump, jet pump, garden pump, clean water pump, centrifugal pump, etc The Pressure Switch Pump is made of high quality material, with long serving life Product Descriptionpressostat Pompe eau, Hilitand Self-Priming Water Pump Pressure Switch 220V Automatic Pressure Controller Black for Self-Priming Pump, Jet Pump, Garden Pump, Clean Water Pump, Centrifugal Pump