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THE ARMSTRONG S&H CIRCULATING PUMP A MULTI-PURPOSE WITH GREAT FUNCTIONALITYThe Armstrong S & H circulating pump is a great pump in the Armstrong lineage of pumps that is appropriate for hydronics heating and cooling, multi-stage zoning, industrial service and domestic water cooling. It is available in different sizes to suit different purposes. You may use it for pumping water efficiently both at home or industrial areas. The Structure: The pump has a three-piece body with a radia …