Xylem Bell & Gossett NBF-36 103401LF 115V Bronze Circulator Pump
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The Bell & Gossett NBF-36 (part number 103401LF) is a new, lead-free bronze wet-rotor circulator pump designed for residential and light commercial hydronic heating systems, domestic hot water recirculation, and radiant floor heating applications. Rated for 115V/60Hz single-phase power with Class F insulation, the NBF-36 features three selectable speed settings: Speed 1 draws 1.2A/130W, Speed 2 draws 1.6A/180W, and Speed 3 draws 2.3A/270W, allowing field adjustment to match system head requirements. The pump is impedance-protected (LEO-F rated), carries a maximum liquid temperature rating of 225°F (107°C) and maximum working pressure of 150 PSI (10 BAR), and uses Bell & Gossett's DuraGlide maintenance-free bearing technology. The 'LF' suffix confirms lead-free bronze construction compliant with NSF/ANSI 61 and 372 low-lead requirements, making it suitable for potable water systems. Includes two flange O-rings and Installation, Operation & Maintenance manual; UL Listed (Enclosure 2, 96H0); designed in the USA, manufactured in Indonesia by Xylem.
Product Specifications
| Brand | Bell & Gossett (Xylem) |
| Model | NBF-36 |
| Part Number | 103401LF |
| Grainger Item # | 5JPA7 |
| Voltage | 115V |
| Frequency | 60 Hz |
| Phase | 1-Phase |
| Motor Insulation Class | Class F |
| Speed Settings | 3 |
| Amps - Speed 1 | 1.2 A |
| Watts - Speed 1 | 130 W |
| Amps - Speed 2 | 1.6 A |
| Watts - Speed 2 | 180 W |
| Amps - Speed 3 | 2.3 A |
| Watts - Speed 3 | 270 W |
| Max Liquid Temperature | 225°F / 107°C |
| Max Working Pressure | 150 PSI / 10 BAR |
| Bearing Type | DuraGlide (maintenance-free) |
| Overload Protection | Impedance Protected, LEO-F |
| Body Material | Lead-Free Bronze |
| Lead-Free Compliant | Yes (LF suffix, NSF/ANSI 61 & 372) |
| Enclosure Rating | ENC. 2 |
| Certifications | UL Listed (cULus), 96H0 |
| Pump Type | Wet-Rotor Circulator |
| Includes | 2x flange O-rings, IOM manual |
| Condition | New |
| Manufactured In | Indonesia |
| Designed In | USA |