1、With automatic pressure switch, the adjustment range is 1.0 to 4.1kg, and has automatic start and stop function. 2、With own pressure return function, when the actual use flow is less than the pump output, the bypass switch pressure relief cycle will start. 3、With standard 1/2in male thread interface and filter, has good sealing, simple operation and fast installation. 4、Equipped with anti vibration galvanized iron plate rubber mounting feet, which can effectively reduce working noise. 5、Using copper core motor, the noise is lower and the speed is higher, and it has overload and overheat protection functions. 6、Made of refined materials, has low power consumption and high performance, and more stable operation. Item Type: Diaphragm Pump Material: Cold rolled steel, copper, rubber Uses: Car wash, filling machine, garden agricultural spray, agricultural spray, water heater, household boost, RV, yacht, shower boost Suction Range: Approx. 3meter / 9.8ft Gallon: 4.0GPM Flow Rate: 15.0L/Min Stop Pressure: 55 PSI(3.8BAR) Head: Approx. 38meter / 124.7ft Control Method: Pressure, reflux switch Interface Method: 1/2in-14 (male thread interface) Operating Temperature: ≤50℃ Medium Temperature: 0~+65℃ Medium PH Value: 5.0-10 1 x Pump 1 x Filter 2 x Connectors 1 x User Manual