Wide application Single screw pump is used in all fields widely to feed kinds of medium, running at a constant pressure continously without pulse and damage when feeding medium , and change the gauging aim through adjusting rotation Feeding medium This product is applicable for feeding medium which has the followig properties High solid cotent(diameter of the bigest particle is 50mm)or no solid content Medium with all viscosites(1mpas~3000000mpas) Medium that is easy to be generated and swelled Shearing sensitive medium Medium with erosion Medium with/without self lubrication Erosive medium(ph-0~14) Adhesive medium Toxicity hazard medium