... and Compressor" or DIN28431 "Acceptance Specifications for Liquid Ring Vacuum Pumps". APPLICATIONPower industry: vaccumizing condensating air, negative voltage transferring, gypsum dehydration ... , pressure swing adsorption, decarburization, hydrogen extraction, oxygen making, purification, vacuum distillation, vacuum crystallization.Textile industry: yarn steam set, draining and drying of ...