... 2. High efficiency 3. No noise This is 3G series screw pump. Application It applies to deliver clean and non-corrosive medium ... at temperature beow ≤150with the viscosity of 5-760cSt,The pump's working pressure range from 0.6MPa to 2.5MPa ... claw coupling. Material: The driving and driven screw 16MnCrS5,40Cr,45,38CrMoALA Pump casing:HT200,QT450-10,ZCuSn10Pl,ZG270-500 3 GR screw pump