UPS50B-80/4 wet-rotor, bronze body circulator pump with 2" flanged connection and a 3/4 HP, 115v, single phase, 1-speed motor for hydronic heating and cooling in closed loop systems. It has a flow range of 20-180 GPM and a head range of 1-62 feet. Flange gaskets are included, but flanges are sold separately. Grundfos UPS Series pumps feature a 3-speed motor, which allow the user to adjust the pump speed to fit their specific application. Ceramic bearings ensure years of quiet, trouble-free operation and quick connect terminals provide easy installation.