【Solid & Durable】 Solid ABS body, soft rubber mounting, the diaphragm is sturdy and heavy equipment easy to dissipate heat with two large holes on one end of the pump body. 【Work Principle】 When the water output of the diaphragm is completely blocked (no water loss and the pressure drops to the maximum value of 11 kg.f / cm2), the power will automatically stop and the pump motor will stop. When the water intake is opened, the pump will resume working. 【Low Current Absorption】 Hassle-free self primer, easy connection system, powerful automatic diaphragm , extremely efficient, very low current absorption and high output capacity. 【Wide Application】 The diaphragm has wide applications such as car washing machine, solar water, water remote control equipment, some places need to check the switch frequently, save energy somewhere, etc. 【Considerate Instruction】- An indicating arrow on the pump surface to direct the water flow, and it directs to the outlet water side., Manufacturer: SOULONG