Armstrong Fluid Technology 816303-317K Impeller Kit

The Armstrong Fluid Technology 816303-317K Impeller Kit is a precision-engineered OEM replacement part designed to restore the hydraulic efficiency of high-performance circulator pumps. This comprehensive kit features a 5.25-inch Noryl impeller, a high-strength thermoplastic known for its exceptional dimensional stability and resistance to corrosion and scaling in demanding HVACR systems. By utilizing an injection-molded replacement impeller kit, technicians can ensure a perfect balance that reduces axial loading on the shaft, effectively minimizing vibration and extending the operational life of the pump assembly. The Armstrong 816303-317K is specifically compatible with Armstrong H-53 and Series 1050-1.5 models, providing a factory-spec fit that eliminates the need for field adjustments or manual balancing. This centrifugal pump part includes all necessary components for a complete overhaul, including the casing gasket (O-ring), impeller nut, and lockwasher, ensuring a leak-free seal and optimal fluid flow transition within the pump volute.

• Precision-Balanced Performance: The Noryl impeller is dynamically balanced to ensure vibration-free operation and reduced mechanical stress on the motor shaft.
• Complete Maintenance Solution: Includes the impeller kit 5.25", nut, lockwasher, and casing gasket for a comprehensive circulator pump repair.
• High Chemical Resistance: Engineered to withstand the rigors of hydronic heating and cooling applications without degradation or mineral buildup.
• Optimized Energy Efficiency: Restores factory-intended flow characteristics, helping to lower energy consumption by maintaining peak pump efficiency.

• What pump models does the 816303-317K fit? This kit is specifically designed for Armstrong Fluid Technology H-53 and 1050-1.5B (1.5-inch) series circulators.
• Does the impeller require trimming or balancing? No, this OEM replacement part is factory-balanced and molded to a precise 5.25-inch diameter for immediate installation.
• Is Noryl better than bronze for this application? Noryl offers superior resistance to corrosion and is significantly lighter, which reduces the load on the pump’s internal bearings.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.

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