Note: This item is for hydronic heating systems, and should not be used in potable water systems. For potable water systems, please refer to to 116432LF-133 Standard three-piece design
Radially-split body: Can be left in-line while servicing pump, eliminating disconnecting of pipes
Oversized shaft: Made from special alloy steel
Centrifugal impeller: Ensures maximum water delivery in the HVAC system
Positive mechanical seal: ARMseal construction ensures many years of noise-free, trouble-free service
Modular construction: Unique shaft and bearing module fits for ease of serviceability and reduced inventory costs
Armstrong H-51 BF In-Line Circulators are apart of the Series H. The 1/4 HP bronze fitted circulator pump is suitable for hydronic heating and cooling, domestic water systems, multi-stage zoning and general industrial service applications. Built using a standard three-piece design that features a radially-split body, oversized shaft, centrifugal impeller, positive mechanical seal and modular construction, Armstrong Pumps Series H Circulators are a trusted, durable product that have been used by HVAC professionals for decades.