Grundfos UPS3 Circulating 15-50/65 Pump 230VHighly efficient, the Grundfos UPS3 15 50 65 130 circulator pump is suitable for use as a universal upgrade and replacement pump, circulating liquids in domestic heating systems. This pump has a user friendly one button interface for simple, fast set up, while LEDs indicate actual operating status as well as providing warnings and alarms. Self venting through the system, UPS3 offers easy commissioning, while the compact design, featuring a pump head