HW250HF-S series high pressure plunger pump is a new type of medium-low pressure and large flow pump developed by our company. The power end matches many kinds of transmission speed ratio, the input power can reach 250kW. The hydraulic end uses the finite element analysis method, carries on the structure optimization guarantees the continuous work the stable reliable, the integral pump head, has optimized the pressure chamber structure. The pump type can meet the working pressure of 16-70 MPa and the flow rate of 88-272L/min. Can be used for large diameter pipeline cleaning, Powder metallurgy, chemical industry reactor tank cleaning scale, large-scale pipeline water injection, pressure test. This series of products can transport 0 ~ 50? water, emulsion, and other chemical property similar to water liquids.