high pressure water pump: 1.Flow: 34L/H to 1042 L/H 2.Pressure: 3.5bar to 17.5 bar 3.Certificate: CE, ROHS high pressure water pump is stainless steel made with rotor and housing, while the pumping chamber and the vanes are in graphitic carbon ( no poison ). The inlet and outlet ports are 3/8" NPT threaded.The rotary vane pump is equipped with a built-in by-pass; A specail balanced by-pass ( able ...