Armstrong Fluid Technology 174035MF-143 Pump

The Armstrong Fluid Technology 174035MF-143 Pump is a high-performance H-41AB circulator pump designed for demanding commercial and residential applications. Engineered for efficiency, this 1/6 HP, 115V single-phase motor includes built-in thermal overload protection to ensure reliable operation under continuous load. As a lead-free all bronze body centrifugal pump, it is perfectly suited for potable water systems, hydronic heating, and domestic hot water recirculation. This maintenance-free model features a three-piece design with a non-ferrous impeller and no-lubrication bearings, significantly reducing long-term operational costs. The 174035MF-143 serves as the direct 174035LF-143 replacement, offering a seamless fit for existing 1" flange configurations. Its radially-split body allows for easy in-line servicing without disconnecting large sections of piping, making it a preferred choice for HVAC professionals seeking durability and ease of installation in hot water recirculation and hydronic cooling systems.

• Corrosion Resistance: The lead-free bronze construction ensures compatibility with potable water and prevents rust.
• Simplified Service: The three-piece modular design and radially-split body allow for rapid repairs and part replacements while keeping the pump in-line.
• Operational Safety: Integrated thermal overload protection prevents motor burnout during unexpected electrical spikes or temperature surges.
• Zero Maintenance: Equipped with permanently lubricated, maintenance-free bearings, eliminating the need for periodic oiling or greasing.
• High Standard Compliance: Meets NSF-372 standards for lead-free applications, ensuring safe water delivery in any building.

• Is this pump compatible with residential drinking water? Yes, the all-bronze body is lead-free and certified for use in potable water delivery systems.
• What does "maintenance-free" mean for this model? It specifically refers to the sealed bearings that do not require external lubrication, reducing manual upkeep and extending the lifecycle of the unit.
• Can I use this to replace an older 174035LF-143? Absolutely. This model is the official direct replacement for the 174035LF-143 and fits identical 1" flange centers.

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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