https://www.ohiomedicalparts.com/products/vacuum-pump-and-motor-assemblies.php
Liquid ring pump/motor modules available from 5 to 25 HP. Includes two stage liquid ring vacuum pump, motor, coupling, guard, mounted on formed base.
liquid ring pumpmotorassemblies
https://liquivac.co.uk/
Liquivac a fast priming liquid ring vacuum pump, designed to pump liquids or combinations of liquids, air and fine solids.
liquid ringvacuum pumpselfpriming