The SCREW IMPELLER PUMP is the best pump for pumping sewage and wastewater and as a general purpose pump. The high efficient screw centrifugal impeller with high solids free passage (100 mm) is designed for matchless solids-handling. The fuel consumption is one of the lowest compared with other pumps of its kind. The priming system is an unique diaphragm vacuum pump: oil free, fully automatic and extremely reliable.
The STANDARD version has an analogue controlbox for manual or automatic operation with two float switches, that is placed in a separate and lockable hatch. The moisture sensor in the suction part and the electromagnetic coupling prevent the vacuum pump from running when not required.