The Harben P type pump is a high pressure diaphragm pump capable of pressures up to 415 bar and flows to 72 lpm. It is available with 3, 4, 6 or 8 cylinders requiring from 10 to 50hp depending upon the pressure and flow configuration chosen. Drive power can be diesel or electric and we have a range of gearbox ratios to suit all requirements. It has a unique mode of operation that keeps all the moving parts inside the pump separated from the pumped fluid. The video below clearly shows the simplicity of operation which delivers some significant advantages over more traditional direct acting pumps.