Description
Bell & Gossett 103258LF Lead Free Bronze Wet Rotor Circulator (Model NBF-9U/LW)
The Bell & Gossett NBF-9U/LW (SKU: 103258LF) is a high-quality, lead-free bronze wet rotor circulator engineered for reliable performance in residential and light commercial hydronic heating systems. Designed with union connections for easy installation and serviceability, this single-speed circulator delivers efficient, quiet operation with minimal maintenance requirements thanks to its wet rotor design — eliminating the need for external bearings or shaft seals.
Key Features
- Lead-free bronze construction for potable water compatibility and long-term corrosion resistance
- Wet rotor design — motor rotor is cooled and lubricated by the system fluid, eliminating external bearings and seals
- Union connections for fast, tool-friendly installation and easy in-line serviceability
- Single-speed operation for straightforward, dependable performance
- Compact, space-saving design ideal for residential and light commercial hydronic applications
- Quiet operation suitable for noise-sensitive environments
Electrical Specifications
- Voltage: 115VAC
- Phase: Single Phase
- Speed: 2,800 RPM
- Full Load Amps: 0.40 A
- Power Consumption: 41 Watts
- Speeds: Single Speed
Construction & Compliance
- Lead-free bronze wetted components — compliant with lead-free regulations for potable water systems
- Wet rotor circulator design for maintenance-free, self-lubricating operation
- Union end connections for in-line installation flexibility
Typical Applications
- Residential and light commercial hydronic heating systems
- Hot water recirculation systems
- Radiant floor heating loops
- Boiler system circulation
- Domestic hot water systems requiring lead-free compliance
The Bell & Gossett NBF-9U/LW circulator (103258LF) combines the trusted Bell & Gossett legacy of hydronic excellence with lead-free materials and an efficient wet rotor design, making it an ideal choice for contractors and engineers who demand reliability, compliance, and ease of installation.







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