... and reliable and simple operationDredging pumps 200WN – 500WN are single casing, single suction, cantilever and horizontal layout. By the drive ... lubricated with grease or light oil.600WN – 1000WN are double casing, single suction, cantilever and horizontal. Frame type is by ... liner breaks, no water leakage will occur.WNQ sump pump is single casing, single suction and cantilever. Fir its frame type, ...