Armstrong Fluid Technology 812961-111 Impeller 321042-401 or heat-induced warping

or heat-induced warping

it eliminates leak points by avoiding welds

ensuring seamless mechanical compatibility without the need for enclosure modifications

Rated for temperatures up to 250°F and compatible with up to 60% glycol solutions

Enhanced System Safety: Protects the heat exchanger from cracking by monitoring air handler internal temperatures

Armstrong Fluid Technology 812961-111 Impeller 321042-401 or heat-induced warpingThe Armstrong Fluid Technology 812961 111 Impeller is a precision engineered Noryl plastic impeller specifically designed to restore the hydraulic performance of your Armstrong S 25 circulator pump. This non ferrous plastic component is an essential HVAC replacement part used in heating and cooling systems where resistance to corrosion is paramount. With an outside diameter of 2 3 4 inches, it is manufactured via high quality injection molding to