Armstrong 816304-321K 4.75" Non-Ferrous Impeller for S-55 Pumps
Armstrong 816304-321K 4.75" Non-Ferrous Impeller for S-55 Pumps
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Apply for Trade Account & Terms →| Performance Parameter | Engineering Baseline Value |
|---|---|
| Manufacturer Part Number (MPN) | 816304-321K |
| Model Designation | S-55 |
| Impeller Diameter | 4.75" |
| Material Composition | Non-Ferrous |
Maintain peak circulation efficiency in your hydronic systems with this genuine replacement impeller designed specifically for the Armstrong S-55 circulator pump. The 816304-321K non-ferrous impeller ensures consistent fluid transfer and hydraulic performance, effectively restoring the pumping capacity required for your heating or cooling applications. By replacing a worn or damaged impeller, you prevent premature motor stress and ensure your system continues to run quietly and reliably.
The impeller functions as the rotating component of the centrifugal pump, converting rotational energy from the motor shaft into fluid velocity and pressure. Constructed from high-grade non-ferrous materials, this component is engineered to resist corrosion and handle the thermal demands of residential and light commercial hydronic loops. Proper fitment ensures precise clearance between the impeller and the pump volute, minimizing internal recirculation and maximizing output efficiency.
Key System Performance Baselines:
- Material Integrity: Non-ferrous construction provides superior corrosion resistance in hydronic fluids.
- Hydraulic Precision: Engineered to original factory specifications for the S-55 series pump.
- Energy Efficiency: Smooth impeller geometry minimizes drag to maintain target flow rates.
- Reliable Fitment: Designed for seamless installation and standard housing compatibility.
⚠️ Application Profile: This replacement impeller is intended for use in Armstrong S-55 series circulating pumps within closed-loop hydronic heating, radiant floor heating, and commercial hot water recirculation systems.
