TSWA series multi-stage centrifugal pump is horizontal, single-suction multi-stage and segmental, which is an energy- saving series of product developed and produced lately, a new product based on the major technical improvement for TSWA multi-stage centrifugal pump. Its performance parameters and technical indexes have all been improved significantly, so it has such noticeable advantages as high efficiency, low running noise, strong cavitation resistance, reasonable structure and long service life. The full line of TSWA multi-stage centrifugal pump includes 5 type and 40specifications, whose performance range is: flow Q=1.5~191m³/h, lift head H=l7~ 247m and rotation speed n= 1450r/min. TSWA multi-stage centrifugal pump is used to transport the clear water or other liquids with similar physical and chemical properties as clear water with temperature less than 80C. It is widely applicable for water supply and drainage of city buildings, factories and mines, especially for refrigeration and air conditioning water supply in guesthouses, hotels and recreation areas.