PW (L)-type single-stage, single-suction, centrifugal water pump, the pump wetted parts made ​​of ordinary gray cast iron. Shaft made of high quality carbon steel, supported by bearings, placed in bearing housing, with thin oil or grease lubrication. The pump has a reliable, smooth running, easy to plug, convenient maintenance. Below 80 ℃ for pumping with the fiber or other liquid suspension, for urban sewage exclude the use industrial and mining enterprises.