Description
The Bell & Gossett 103400 NRF-36 is a high-performance, three-speed cast iron wet rotor circulator engineered for residential and light commercial hydronic heating systems. Featuring a compact, in-line design with a maintenance-free wet rotor motor, this circulator delivers dependable, quiet, and efficient fluid circulation across a wide range of system configurations.
Key Electrical Specifications
- Voltage: 115VAC, Single Phase
- Motor Speed: 3,300 RPM
- Full Load Amps: 2.30 A
- Power Consumption: 270 Watts
- Three selectable speed settings for flexible system balancing
Construction & Design
- Cast iron body for superior durability and long service life
- Wet rotor motor design — no mechanical seals or bearings requiring lubrication
- Compact, space-saving in-line configuration
- Compatible with 3/4″, 1″, 1-1/4″, and 1-1/2″ flanges for versatile installation
Performance & Application
- Ideal for hot water heating, radiant floor systems, and hydronic distribution
- Three-speed operation allows on-site flow rate adjustment without additional valves
- Wet rotor technology eliminates coupling and external bearing maintenance
- Suitable for use with a wide range of flange sizes, reducing the need for adapters
Why Choose the Bell & Gossett NRF-36?
Bell & Gossett has been a trusted name in hydronic system components for decades. The NRF-36 (Model 103400) combines robust cast iron construction with the efficiency of a wet rotor motor, making it an excellent choice for installers and engineers who demand reliability and flexibility. The three-speed capability allows precise system balancing at commissioning, while the broad flange compatibility simplifies retrofits and new installations alike.
