Feature: 1. For Automatic Pump: Designed for start and stop operation of automatic water pumps, suitable for self priming pump, jet pump, garden pump, clean water pump, etc. 2. Pressure Control: The switch automatically turns water pump on or off according to the change of pressure in pipeline, realizing unmanned control. 3. Reliable Materials: The water pump pressure switch is made of metal and plastic, which is more resistant to corrosion and has a long service life. 4. Water Leakage Inspection: The pressure switch can check whether there is water leakage in the system, safer and more reliable. 5. Practical Tool: This pressure switch replaces traditional pump control system composed of pressure switch, pressure tank and check valve, very practical and easy to use. Specification: Item Type: Water Pump Pressure Switch Material: ABS, Metal Rated Voltage: 110-230V Connecting Water Pump Outlet Size: Approx. 3.39cm / 1-1/3in (male thread) Connecting Water Pipe Outlet Size: Approx. 3.05cm / 1-1/5in (female thread) Wide Application: Self priming pump, jet pump, garden pump, clean water pump, etc. Features: The water pump can be automatically opened and closed according to the change of pipeline pressure, realizing unmanned control. Package List: 1 x Water Pump Pressure Switch1 x Stainless Steel Pressure Tank1 x Copper 4 Way Check Valve Note: Pay attention to the size during installation.