The Armstrong S&H circulators deploy a proven fixed-speed design that is cost-effective, durable and easy to maintain. Models are available in the traditional sleeve-bearing design as well as the new, permanently-lubricated, maintenance-free design.
Armstrong Series S & H in-line circulators are suitable for applications such as hydronics heating and cooling, domestic water systems, multi-stage zoning and general industrial service. Both models are available in a wide range of sizes to match the performance requirements of any of these applications. Armstrong Series S & H circulators are durable and trusted products that have been used by hvac professionals for decades. Besides the existing Sleeve bearing design, Armstrong now has introduced the ‘Maintenance free’ design which has permanently lubricated ball bearings and require no maintenance at all.
Armstrong Series S & H in-line circulators are built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, sintered silicon carbide seal and modular construction
Pump Type 3-Piece Circulators Series H-32, H-41, H-51, H-52, H-53, H-54, H-63, H-64, H-65, H-66, H-67, H-68, S-25, S-35, S-45, S-46, S-55, S-57, S-69, S&H Manufacturer Armstrong Models