The Armstrong Pump S-25 is a 1/12 HP, single phase circulator pump that features a radially-split bronze-fitted body, oversized stainless steel "maintenance free" shaft, centrifugal non-ferrous impeller, sintered silicon carbide seal, and modular construction. This model has a shaft and bearing module that can be easily removed and replaced. Armstrong Pump Series S & H circulator pump 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. The three piece modular construction, which uses a universal replacement shaft and bearing module, and the back pull-out design allows for easy replacement of wear components. Series S & H in-line circulators are suitable for applications such as hydronic heating and cooling, domestic water systems, multi-stage zoning, and general industrial service.
Armstrong Fluid Technology is a world leader in the development of innovative fluid-flow solutions. The company develops products for customers in commercial, residential, and industrial markets. Armstrong manufactures quality HVAC and hydronic equipment for residential, commercial, and industrial applications. Armstrong pumps, controls, motors, and parts are renowned for efficiency and longevity. Their additional product offering includes valves and fittings, suction guides, circuit balancing valves, vortex air separators, sump and sewage pumps, pressure booster systems, fire pump packages, instantaneous water heaters, heat exchangers, and expansion tanks.