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Direct Fitment: Standardized mounting footprint and terminal spacing allow for rapid field replacement on TG9S and GY9S models
though larger commercial units (750-850) should verify the part number for technical revisions
and 2HC series units
2" WC differential to ensure accurate inducer motor verification
Crown Engineering 41299 Pump Coupler 322056-301 Direct Fitment: Standardized mounting footprintThe Crown Engineering 41299 Pump Coupler is a precision engineered spring pump coupler designed for high performance service in hydronic heating systems. Specifically built for Armstrong S 25, S 34, and S 35 circulator pumps, this component ensures a reliable mechanical connection between the 1 12 HP to 1 3 HP motor and the pump assembly. Constructed with a robust iron body and a heavy duty spring, it features a 1 2 inch by 1 2 inch bore size to
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