... oil without of solid grains and liquids. the three spindle screw pump is suitable to carry various ... solid grains and liquids similiar to lucricating oils,the viscosity ofmediums is from 1.2 to ... ensure the sage working of pump,motor,piping system,screw pump is quipped with sagety valvesthe three ... ,vertical installation pump. In order to ensure the sage working of pump,motor,piping system,screw ...