Bell & Gossett NRF-22 Cast Iron Wet Rotor Circulator Pump | 1/25 HP, 115V, 150 PSI

Meet the Bell & Gossett NRF-22 Circulator Pump

The NRF-22 is a rugged, cast-iron circulating pump designed for hydronic loops in homes and light commercial settings. Its wet-rotor design combines durable construction with quiet, steady flow, while a single-phase motor keeps installation straightforward. With three speeds and a standard 115V supply, you get practical control without adding complexity to the system.

Performance and durability at a glance

• Cast iron wet-rotor design for durability and smooth operation
• Three-speed, 1/25 HP, 115V single-phase motor for flexible flow control
• Maximum working pressure up to 150 PSI and operating temperature up to 240 F
• Flow performance: up to 15 GPM at 5 ft, 7.5 GPM at 10 ft for varied layouts
• Designed as a replacement part for compatible hydronic systems

In daily use, the NRF-22 blends reliability with practical versatility. The robust cast-iron housing resists wear from frequent cycling, while the sealed rotor reduces internal chatter that can accompany older or louder pumps. The three-speed setting gives installers a sensible range to match head pressure with loop length and radiator or radiant floor demands, helping the system reach and maintain comfortable temperatures without overworking the motor.

Real-world use cases

Typical installations include radiant floor heating loops, baseboard heating, and compact hot-water circulation tasks. The pump’s 150 PSI rating and 240 F tolerance make it adaptable to a range of boiler configurations, aiding consistent return temperatures and steady flow even as outdoor conditions shift. Expect a balanced, steady hum rather than abrupt surges, with the freedom to adjust performance to fit different home layouts or retrofit projects.

Installation and compatibility

• Flange sizes range from 3/4 in to 1-1/2 in; companion flanges are sold separately
• Suitable as a replacement part for existing single-phase hydronic systems

Bell & Gossett backs its products with a long-standing reputation for reliability in hydronic components. The NRF-22 is designed to slot into many standard configurations, offering a versatile option for retrofit projects or new loop designs. While performance varies with system design and setup, this pump provides a solid foundation for dependable circulation and consistent comfort in many residential and light commercial environments.