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ensuring quiet operation and protecting inducer motor bearings
We strongly recommend confirming your diagnostics or cross-referencing your unit’s serial number before purchase
the 1003481 is the official modern replacement for original part number 904684
Frequency depends on gas quality and pressure drop
it is functionally equivalent and designed for the same 16-inch burner housing
Armstrong Fluid Technology 816322-111K Impeller Kit 320788-704 ensuring quiet operation and protectingThe Armstrong Fluid Technology 816322 111K Impeller Kit is a high precision OEM replacement part designed to restore hydraulic efficiency in centrifugal circulator pumps. This universal kit features a 3. 35 inch (3 3 8") Noryl impeller, specifically engineered for Armstrong Series S and H models, including the S 34, S 35, and H 32. As the advanced successor to legacy parts 816322 111 and 810119 003, this kit provides a complete solution for
