Check the listing for details. Grundfos 96402708 Series 200, Cast Iron Circulator Pump, 1/2 HP, 115V. Condition: New. Listed at 2018.40 USD. Grundfos UPS 32-80/2 3-Speed Cast Iron Circulator Pump The Grundfos UPS Series 200 line of wet rotor circulators is unique to commercial building services. These cast iron pumps are designed for circulation of liquids in heating and air-conditioning systems. Most competitor pumps are dry runners, UPS wet rotor circulators, on the other hand, are designed so that the water being pumped surrounds the rotor, cooling and lubricating the shaft and bearings. Wet rotor design eliminates the need for a fan to cool the motor. Fans are often a source of noise and vibrations that can resonate throughout a building via the pipework. Eliminating the fan results in very quiet operation. FeaturesEasy to installMaintenance freeQuiet operationWet rotor designSealless, which eliminates worries about hot water leakagePumped water lubricates the shaft and bearings so there is no oil to leakNo couplers to changeLiquid temperature range 14 .. 248 °FMaximum operating pressure: 145 psiPort-to-port length: 11" mm ApplicationsHeating systems for apartments, colleges, hospitals institutions and schoolsHot water recirculation for hotels, colleges, institutions, hospitals, and apartmentsLarge residential heatingSnow melt