... 9705-58-44000Triple PumpD575A-2 10705-58-46001Triple PumpWA600-1-A 11705-58-43010Triple PumpWA800-1 12705-52-42090Double PumpHD785-3 ... called positive displacement device, that is like a cylinder in the cylinder piston, when a tooth into another tooth fluid space, liquid ... is continuous in to occur, thus in pump export provides a continuous exclude quantity, pump every one revolution, the amount of ...