Armstrong Fluid Technology 816322-111K Impeller Kit 320788-704 While some limit controls share

While some limit controls share similar temperature specs

Key Benefits for the Contractor: Vandal-Resistant Design: The stainless steel wall plate provides superior protection against physical damage in public spaces compared to vented plastic housings

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

Armstrong Fluid Technology 816322-111K Impeller Kit 320788-704 While some limit controls shareThe 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