Hydronic Circulating Pump Hydronic Circulating Pump HP 1/6 hp Voltage - Pumps 115V AC Phase - Pumps 1 Connection Style Flange Inlet/Outlet Size 2 in Shut-Off 10 ft Housing Material - Pumps Cast Iron Max GPM @ Head 71 gpm @ 1 ft Face to Face Dimension 8 1/2 in Best Efficiency GPM @ Head 40 gpm @ 8 ft Min GPM @ Head 35 gpm @ 9 ft Drive Type Direct Length 16 5/8 in Width 6 11/16 in Loop Configuration Closed Flange/Union Included Yes Includes - Max Operating Pressure 125 psi