The "ASH" self-priming pumps are approved in accordance with US 3A sanitary standards. Made for different application needs, they are a top product thanks to the design features, materials and technologies used. They can handle liquids which release gas or create foam and with the suction pipe only partly filled. Made from AISI 316L using the lost-wax casting process, product contact parts are polished to Ra 0.8 microns.