... and back pull-out design gland seal mechanical seal KWP series sewage pump is characterized by high-efficiency, no clogging, rear dissembling ... sludge slurry. They can be applied to the city water supply system, the water plants, the breweries, the chemical industry, the construction ... -315,KWPK250-400,KWPK250-500KWPK250-630,KWPK300-400 KWPK centrifugal water pump