Liquid ring vacuum pumps are designed for high and low vacuum applications, capable of operating down to 25mm Hg absolute and beyond with the use of other service liquids. These pumps feature long life and low maintenance costs, as the impeller and shaft are the only moving parts, with no contact between the impellers and casing, and no sliding vanes or valves. This design ensures vibration-free and noiseless operation due to the rugged construction and absence of reciprocating parts. Additionally, the pumps provide non-pulsating gas flow and do not require internal lubrication.

They are also efficient at handling both liquids and vapors, capable of passing small amounts of liquid without damage. With low starting torque and the ability to use different service liquids, these pumps can be constructed from a wide range of materials to withstand corrosive conditions. When used as a compressor, they deliver absolutely oil-free air.