Lochinvar & A.O. Smith 100133613 Pump

As a seasoned technician, you know that the reliability of a boiler or water heater depends entirely on its circulation capacity. The Lochinvar & A.O. Smith 100133613 Pump is a heavy-duty, 1/6 HP, 120V single-phase circulator designed specifically for high-demand hydronic systems. This assembly is a direct OEM match for the Armstrong ARM3045PAB, meaning it drops right into existing 1-1/2 inch flanged piping without the need for extensive re-sweating or manifold modifications. Built with a bronze volute, this 100133613 pump assembly is optimized for use with Lochinvar Copper-Fin water heaters and RB/RW series boilers (90-500 models), ensuring consistent flow rates and preventing the localized overheating that can lead to scale buildup or heat exchanger fatigue.

When you are out on a service call and encounter a seized motor or a leaking seal in a commercial application, the Armstrong 3045PAB equivalent provides the 3400 RPM performance required to maintain the system temperature rise across the heat exchanger. This unit includes a set of flanges to streamline the install, allowing for a tight, leak-proof seal in closed-loop or domestic hot water recirculating lines. By utilizing this 1/6 HP 120V 1Ph circulator pump, you ensure that your client's equipment operates within its engineered flow parameters, maximizing efficiency and minimizing the risk of a high-limit lockout.

• Broad Compatibility: Seamlessly replaces legacy units in Lochinvar Copper-Fin 090-500 water heaters and boilers.
• Robust Materials: Features a bronze construction that resists corrosion in open-system or oxygenated water environments.
• Simplified Maintenance: Identical to the ARM3045PAB, ensuring that future maintenance kits and seals are readily available and standardized.
• Installation Ready: Shipped as a complete kit with 1.5-inch flanges to reduce downtime on the job site.

Is the 100133613 compatible with my specific Copper-Fin model?
Yes, this pump is the standard replacement for Lochinvar CW, CWN, and RB/RW models ranging from 90,000 to 500,000 BTU, provided the system requires a flanged 1/6 HP motor.

Can this pump be used in domestic hot water (potable) systems?
Because this assembly features a bronze volute rather than cast iron, it is technically suitable for domestic water heating applications where rust prevention is critical.

What is the primary cause of failure for these circulators?
Most premature failures in the Armstrong 3045PAB series are caused by air in the system leads to cavitation or debris clogging the impeller. Clean the system and purge all air to ensure optimal performance.

This item is not eligible for free shipping.

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.