Features AUTOMATIC START AND STOP: The pressure switch can automatically turn on and off the pump according to the change of pressure in the pipeline, realizing unmanned control. LEAKAGE CHECK: This pressure switch verifies the presence of water leaks in your system and is a great tool for you. METAL AND PLASTIC MATERIALS: The pump pressure switch is made of a combination of two materials, metal and plastic, which are corrosion and wear resistant. WIDE APPLICATION: Pressure switches can be applied to self‑priming pumps, jet pumps, garden pumps, clean water pumps, etc. GOOD REPLACEMENT PARTS: Pressure switch kits are safe and practical, and are good replacement parts for old or broken parts. Spec: Item Type: Pump Pressure Control Switch Kit Material: ABS, metal Connection Pump Outlet Size: 4/3in (male thread) Connecting Water Pipe Outlet Size: 6/5in (female thread) Widely Used: Self priming pumps, jet pumps, garden pumps, clear water pumps, etc. Features: Automatically turns on and off the pump according to the change of pipeline pressure, realizing unmanned control. How to Use: After removing the product, align it according to the size and install it packing list: 1 x Water Pump Pressure Control Switch 1 x Stainless Steel Pressure Tank 1 x Iron Check Valve Notice: Note the size of the installation Package List 1 x Water Pump Pressure Control Switch 1 x Stainless Steel Pressure Tank 1 x Iron Check Valve