... suction, cantilever and horizontal layout. By the drive type, they have two typical structures: frames type and gear-box type. Frame ... lubricated with grease or light oil.600WN – 1000WN are double casing, single suction, cantilever and horizontal. Frame type is by forced oil ... breaks, no water leakage will occur.WNQ sump pump is single casing, single suction and cantilever. Fir its frame type, it is ...