Design And Construction Standards For End Suction Pumps An end suction pump complete with isolation valves, vibration isolators, a suction strainer, long-radius ell and reducer at inlet, spring-supported inertia block, drain pan, and other amenities normally associated with hydronic service is a single stage pump with only one impeller. Source: https://dticorp.com/design-and-construction-standards-for-end-suction-pumps/ in Public bookmarkswith endpumpssuction