Bell & Gossett 103316LF Pump

The Bell & Gossett 103316LF Pump is a high-efficiency NBF-18S Bronze Wet Rotor Circulator engineered for open-loop potable water systems and solar thermal applications. As a direct replacement for the 110223-303 (1-speed) model, this unit features a lead-free bronze body designed to meet stringent plumbing codes while resisting mineral buildup and corrosion. Operating at a fixed 3000 RPM with a 1/25 HP motor, this 115Vac single-phase pump delivers reliable performance with a .74 full load amp draw and 90-watt power consumption. The 1/2" sweat connection allows for a traditional solder installation into residential or light commercial plumbing lines. Utilizing the DuraGlide Bearing System, this hydronic circulator provides whisper-quiet, maintenance-free operation and high starting torque to ensure a clean start-up even after seasonal shutdowns. The closed impeller design optimizes hydraulic efficiency and fluid movement throughout your domestic hot water or radiant heating system.

• Lead-Free Construction: The 100% bronze body is specifically designed for potable water systems, ensuring safety and compliance with modern lead-free regulations.
• Performance & Efficiency: A high-torque Red Fox motor combined with a non-metallic, heat-resistant impeller maximizes GPM flow and energy efficiency.
• Quiet Operation: The wet rotor design handles the lubrication of the ceramic shaft and carbon bearings through the system fluid, eliminating the need for mechanical seals and oiling.
• System Compatibility: Ideal for hot water recirculation, solar thermal loops, and hydronic heating retrofits where a 1/2" sweat connection is required.

Is this a direct replacement for the Bell & Gossett 110223-303?
Yes, the 103316LF (Model NBF-18S) is the official lead-free, single-speed replacement for the discontinued 110223-303.

Can this pump be used in a closed-loop heating system?
While it is primarily designed for open-loop potable water, the bronze construction makes it highly versatile for both hydronic heating and domestic hot water applications.

What are the electrical requirements for installation?
The unit runs on a standard 115V, single-phase power supply and draws only 0.74 Amps during continuous operation.

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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.