The UPS range of 3-speed circulator pumps are available in two sizes. These pumps can be used in both open and closed systems and are a canned-rotor type, i.e. pump and motor form an integral unit without a shaft seal and with only two gaskets for sealing. The bearings are lubricated by the pumped liquid. UPS pumps are designed for circulation of liquids in heating and air-conditioning systems. Typical applications include one and two-pipe heating systems, under floor heating systems, solar heating systems and more. Features Port to port dimensions: 185mm Maintenance-free Low noise Low energy consumption Corrosion-resistant stainless steel pump housing Technical Features Enclosure class: IP42 Insulation class: F Duty rating: Continuous Liquid temperature range: 0-110°C Maximum ambient temperature: 40°C Maximum operating pressure: 10 bar This model is the red line on the pump curve. 1 Year Manufacturing Defect Warranty View Warranty Terms here. Model Speed & Wattage Inlet/Outlet Phase Voltage UPS 25-150 Input Power Speed 1: 150W Input Power Speed 2: 250W Input Power Speed 3: 320W 25mm 20mm unions 1 220-240 Dimensions Model L H1 H2 B1 B2 G UPS25-160 185mm 28mm 145mm 90mm 60mm 25mm