Grundfos UP 43-44F 1-Speed Cast Iron Circulator Pump, 230V, 1/6 HP

The Grundfos circulator pumps, Series UP, are specifically designed for heating systems. The pumps are also suitable for circulation of hot domestic water and for circulation of liquid in cooling and air-conditioning systems. Note: This circulator requires: 539605: 1-1/2" GF 40/43 Cast Iron Flange Pair (NPT) Heating systems Common uses: Boiler/hydronic heating Ground-source heat pumps Radiant floor heating Hydronic and fan-coil heating Solar heating Heat recovery/heat pumps Pump types with cast iron pump housing are generally used for these applications, considered to be closed systems, for pumping water or water/glycol mixtures. However, when water conditions are not compatible with cast iron, we recommend the use of bronze or stainless steel. Optional variable-speed and mixing-reset controls are available to customize heat output vs heat demand for increased comfort. Domestic hot-water systems: Common uses: Solar water heating Hot-water recirculation Domestic hot-water heating. Pump types with bronze, br...