Grundfos Circulator Pump, Series: UP Series, 0 to 3 gpm, 5-1/4 ft Maximum Head, 25 W, 115 VAC, 0.23 A, 60 Hz, 145 psi Maximum, 35.6 to 203 deg F Liquid, IP42, 4-1/3 in H
The pump is equipped with a spherical motor. In contradistinction to the conventional canned-rotor motors, the spherical motor does not have a rotating bearing shaft. The stator transfers the magnetic field to the rotor in the water-conducting part of the pump. The pump is only suitable for pressurized hot water systems. The water-conducting part of the pump is hermetically separated from the stator with a stainless steel spherical separator. The built-in timer enables the pump to start and stop automatically at set intervals of minimum 20 minutes. The built-in thermostat can be set to stop the pump at a preset liquid temperature.