Grundfos UPS15-35SFC is a 1/6HP, 3-Speed Circulator Pump with stainless steel housing, suitable for a wide range of open loop and closed loop applications, including radiant heating, hydronic heating, solar, hot water recirculation, chilled water cooling and many others. 3 speeds of the Grundfos UPS15-35SFC model allow to adjust pump's parameters to match system requirements and achieve optimal performance.