GRUNDFOS - 3 Speed Pumps - CAST IRON UPS43-44FC 230 3-speed, 1/6 HP, flanged housing - 52722515

The Grundfos UPS43-44FC (MPN 52722515) is a heavy-duty three-speed cast iron circulator pump engineered for closed-loop hydronic heating, chilled water, geothermal, and HVAC circulation systems. Powered by a 230V single-phase, 1/6 HP motor, this maintenance-free wet rotor circulator delivers reliable performance with three selectable speed settings to optimize flow and system balancing. Its rugged cast iron housing, ceramic bearings, composite impeller, and removable integral check valve ensure dependable, long-lasting operation with minimal maintenance. Designed for commercial and residential heating applications, the UPS43-44FC provides quiet, energy-efficient circulation for boilers, radiant floor heating, heat pumps, fan coil units, and primary/secondary piping systems.

Cross References

• Grundfos — 52722515
• Grundfos — UPS43-44FC 230V
• Grundfos — 52722514 (115V version of the same circulator)

Usage

The Grundfos UPS43-44FC is designed to circulate water through closed-loop hydronic heating and cooling systems. Typical applications include commercial boilers, radiant floor heating, primary/secondary boiler loops, geothermal systems, chilled water systems, fan coil units, district heating, and HVAC circulation. The three-speed motor allows installers to adjust pump performance to meet system requirements, while the removable check valve helps prevent reverse circulation when required. The cast iron housing makes this model suitable for closed-loop heating systems only and not for potable water applications.