WQS Series Sewage Pump 1.Sewage pump is high efficiency 2.Sewage pump is Non-blocking design 3.Sewage pump has CE certificate WQS Series Sewage Pump Working Principle WQ series sewage pump are submersible VORTEX pumps,for dirty water,designed mainly for industrial and civil fields.Are fitted with a vortex open impeller. Being made of hard alloy and reliable well-sealed and equipment with overhead ...