... .57PV2R41.0303031.729.071.57 Pump cartridge is the heart of the pump, it would said that pump performance's , life span ... series pump cartridge components . PV2R series of vane pump, the cartridge is mainly composed of stator and rotor, vane, pressure ... side plate, side plate, seal and etc. The main performance parameters same as the corresponding specifications of pump performance parameters, See " ...