Bell & Gossett Series 100Nfi Iron Body Circulator Pump – 115V, 1/12 HP

Overview

The Bell & Gossett Series 100Nfi iron body circulator pump is designed to keep hot water flowing smoothly in residential heating and light commercial loops. This oil-lubricated, single-phase pump features a cast iron body and a plastic impeller, delivering steady performance without unnecessary complexity. The unit ships without flanges, giving you the flexibility to pair it with the fittings you already use in your system.

Key specifications

• Single-phase circulating pump
• 115 V operation with 1/12 HP output
• Cast iron body with a plastic impeller
• Oil-lubricated for low-friction performance
• Max operating pressure: 125 psi
• Max operating temperature: 225 °F
• Compact, reliable design suited for everyday maintenance and repairs

Practical uses

• Hydronic heating loops that require consistent water movement
• Replacement for aged or noisy circulator pumps in home systems
• Repair parts sourcing for DIY enthusiasts and professional technicians

Installation and notes

• Includes the pump body with impeller but excludes flanges; ensure compatible flanges are added for installation
• 115V electrical supply; verify compatibility with your existing wiring and circuit limits
• Colloquially referred to as a one-pipe, single-phase circulating pump for straightforward retrofits

Overall, this Bell & Gossett pump offers a robust, cast-iron build with a plastic impeller, aimed at dependable hot-water circulation. It’s a practical choice for upgrading aging systems or adding reliable circulation to a new install, with a clear path to compatibility through its flange options and standard electrical requirements.