The Grundfos UPS 43-100 F circulator pump is a high-performance cast iron hydronic circulation pump designed for heating, HVAC, and boiler systems. Engineered with a canned rotor design, this pump integrates the motor and pump into a compact, leak-free unit, eliminating the need for a shaft seal and reducing maintenance requirements.
- Built-in thermal overload switch
- Maintenance-free canned rotor design
- Quiet, low-noise operation for residential and commercial applications
- Corrosion resistant impeller for improved reliability
- 3-speed selector swith for optimized flow and energy efficiency