The Grundfos UPS 43-100 SF circulator pump is specifically designed for domestic hot water (potable water) and radiant floor heating systems. Featuring a corrosion-resistant bronze pump housing, this model is ideal for applications where water quality and system longevity are critical. Unlike standard cast iron pumps, the bronze construction prevents corrosion in systems where the pumped liquid may become aerated, making it a preferred solution for underfloor heating and drinking water circulation. This pump utilizes a canned rotor (seal-less) design, integrating the pump and motor into a single, compact unit without a shaft seal. This reduces maintenance requirements and increases reliability. The liquid-lubricated bearing system ensures quiet operation, smooth performance, and extended service life.
- Corrosion-resistant pump housing for long-lasting durability
- Built-in thermal overload switch for motor protection
- Maintenance-free design for long-lasting, hassle-free performance
- Quiet, low noise operation
- Corrosion resistant impeller engineered to prevent wear and extend pump lifespan
- Multi-speed operation for optimized flow control and energy efficiency