Lochinvar & A.O. Smith 100166406 Pump

The Lochinvar & A.O. Smith 100166406 Pump is a high-performance 1/2 HP 115V circulating pump engineered for demanding hydronic heating and commercial water heater applications. This heavy-duty cast iron centrifugal pump, often identified by its manufacturer number PUM20008, serves as a critical OEM replacement water pump for Lochinvar Power-Fin (PF) and Copper-Pak (CP) series boilers, as well as A.O. Smith industrial water heating units. Designed to handle consistent fluid transfer with a 3450 RPM motor speed, this unit ensures optimal flow rates through the heat exchanger to maintain system efficiency and prevent thermal high-limit trips. The Lochinvar 100166406 features a robust mechanical seal and 2-inch flange connections, facilitating a direct-fit installation for service technicians. This pump is the designated replacement for obsolete models such as the PUM30001, providing a reliable solution for restoring commercial boiler pump performance in closed-loop systems.

• Industrial-Grade Reliability: Constructed with a high-tensile cast iron body to withstand the high-temperature environments of commercial mechanical rooms.
• Precision Fluid Dynamics: The 1/2 HP motor is calibrated to provide the exact GPM required for Lochinvar PB and PF model heat exchangers.
• Direct OEM Fitment: Eliminates the need for pipe modifications by matching the original 2-inch flange-to-flange dimensions and electrical requirements.
• Optimized Energy Consumption: Operates on standard 115V power with high starting torque to ensure immediate circulation upon system demand.

Is the 100166406 compatible with older PUM30001 models?
Yes, this pump is the direct replacement for the discontinued PUM30001 and will bolt directly into the existing flange configuration without adjustments.

Can this pump be used in potable water systems?
This specific model features a cast iron housing designed for closed-loop hydronic heating; for potable (open) domestic water systems, a bronze-body equivalent is typically required.

What are the electrical requirements for installation?
This is a 115V, single-phase motor. Always verify that the existing circuit breaker and wiring gauge meet the amperage draw specified on the motor nameplate.

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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.