Source: wikibot/liquid-ring-pump
= Liquid-ring pump
{wiki=Liquid-ring_pump}
A liquid-ring pump is a type of positive displacement pump that uses a rotating mechanism to create a partial vacuum or to compress gases. The design consists of a cylindrical chamber with an impeller, which is typically mounted off-center. As the impeller rotates, it throws liquid—usually water or another suitable liquid—against the inner wall of the casing, forming a ring of liquid.