Armstrong Fluid Technology 816304-317K Plastic Impeller R-407C generally featuring a 1/2-inch shaft

generally featuring a 1/2-inch shaft

Maintains OEM performance specs by providing the correct liquid propane orifice sizes for specific BTU inputs

Will this pressure switch work with any 2-stage natural gas furnace

The 1/4" hose barb prevents vacuum leaks

the 72-inch 1970-072 can replace shorter leads if the excess is carefully coiled away from heat sources and sharp edges

Armstrong Fluid Technology 816304-317K Plastic Impeller R-407C generally featuring a 1/2-inch shaftThe Armstrong Fluid Technology 816304 317K Plastic Impeller is a precision engineered circulator pump replacement part designed to restore peak hydraulic efficiency to your HVAC system. This 5 1 4" Noryl impeller is manufactured from high quality, non ferrous composite materials, offering superior corrosion resistance and durability in demanding hydronic applications. As the official 816304 317K maintenance kit, it serves as the direct OEM pump