Features Zinc Alloy Construction: The bottom of the switch is made of zinc alloy, providing durability and corrosion resistance, ensuring a longer lifespan compared to plastic products. High Pressure Resistance: This automatic water pump pressure switch can withstand high pressure without water seepage or leakage, ensuring practical and reliable performance. Silver Material Double Clutch: Equipped with a silver material double clutch, featuring 15-sided for enhanced stability and strength, making the switch more reliable. Long Service Life: Designed for longevity, this automatic water pressure switch can have a prolonged service life with infrequent starting, offering lasting and dependable functionality. Broad Compatibility: Suitable for automatic cold and hot water self-priming switch pumps of major brands, and compatible with both internal and external threaded elbow pipes. Features: 1、The bottom of the switch is made of zinc alloy, which is different from plastic products. and corrosion？resistant. 2、This automatic water pump pressure switch can withstand high pressure without water seepage or water leakage, which is very practical. 3、Silver material double clutch(the is 15？sided is more stable than single point ), to ensure the strength of the switch, stable and reliable. 4、This automatic water pressure switch has a long service life, and if you avoid frequent starting it，you can use it for a long time. 5、Suitable for automatic cold and hot water self priming switch pumps of major brands, and for internal and external threaded elbow pipes. Specification: Item Type: Water Pump Pressure Switch Material: Zinc Alloy Specification: 1.8~2.6bar (Suitable for 550W) Interface Thread Specification: Double 3/8NPT Inner Wire Product Use: Suitable for Automatic Cold and Hot Water Self Priming Switch Pumps of Major Domestic and Foreign Brands, and for Internal and External Threaded Elbows. (for HY, for Well, for LG pump, for WALRUS, for Hanjin Pump, for Supr^Suny, for SHIMGE, for Leo Pump, for ESE, for Shaoxing Snow, for Shanghai Xinxishang, etc.) Package List: 1 x Switch Note: This switch is suitable for automatic cold and hot water self？priming switch pumps of major domestic and foreign brands, and for internal and external threaded elbow pipes. Package List 1 x Switch