Metering Pump 1.New Design,Tightness and Long life 2.Flow 0-15 lph, Pressure ... free diaphragm pumps.Low power consumption.Drive by electromagnetism,simple design,the speed of stroke is adjustable.Easy to install, the ... department, daily chemicals, food industry, constructions industry, and etc. Measurements Project Case Solenoid Dosing Metering Pump