automatic diaphragm dosing pumps automatic stroke controller flow:0-500L/H, Pressure:0-10bar ... .It can transport high-viscosity mediums, corrosive liquid and dangerous chemical goods.4.The flow can be controlled via adjusting the ... to cover all of the body.PurposeWidely used in petroleum, chemical industry, electric power, metallurgy, mining, shipbuilding,light industry, agriculture, national ...