Description
The Bell & Gossett 103261LF (Model NBF-12U/LW) is a high-performance, lead-free bronze wet rotor circulator engineered for reliable hydronic heating and cooling applications. Featuring union connections for easy installation and serviceability, this single-speed circulator is built to meet lead-free compliance requirements, making it an ideal choice for potable water and closed-loop hydronic systems alike.
The NBF-12U/LW wet rotor design eliminates the need for external bearings and seals by using the circulated fluid itself to lubricate and cool the rotor assembly — resulting in quieter operation, reduced maintenance, and extended service life. Its compact, robust bronze construction resists corrosion and ensures long-term durability in demanding hydronic environments.
Electrical Specifications
- Voltage: 115VAC
- Phase: Single Phase
- Speed: 2,800 RPM
- Full Load Amps: 0.48 A
- Power Consumption: 55 Watts
- Speed Configuration: Single Speed
Construction & Design Features
- Lead-free bronze wet rotor construction for potable water compliance
- Union connections for simplified installation and removal
- Wet rotor design — fluid-lubricated, no external bearings or seals required
- Compact, lightweight design suitable for residential and light commercial hydronic systems
- Corrosion-resistant bronze body for long service life
Typical Applications
- Residential and light commercial hydronic heating systems
- Radiant floor heating loops
- Domestic hot water recirculation
- Closed-loop chilled water systems
- Solar thermal systems
Why Choose Bell & Gossett?
Bell & Gossett, an Xylem brand, has been a trusted name in hydronic system components for over a century. The NBF-12U/LW circulator reflects the brand’s commitment to efficiency, reliability, and compliance — delivering consistent flow performance with minimal energy consumption and virtually maintenance-free operation over its service life.
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