Applications include – cellar drainage, septic/cess pit emptying, garden sprinkler and irrigation systems, water supply, diesel transfer, vegetable oil and non-aggressive chemicals. The design of the pump has a helical rotor revolving eccentrically with a resilient double helix stator of twice the pitch. The rotor turning within the stator forms cavities which progress uniformly from suction to discharge, carrying the material with them. MS range has a maximum suction lift of 8 metres, MM has 7.5 metres and the ML has 5.5 metres. Maximum liquid temperature rating of 70°C.