Hydronic Circulating Pump, Compatible Intake Pipe Size 1 in, 1 1/4 in, 1 1/2 in, Connection Type Flange, Face to Face Dimension 8 1/2 in, Flange or Union Included No, For Use With Potable Systems No, Horsepower 1/6, Maximum Feet of Head 12 ft, Maximum Flow Rate @ 10 Feet of Head 22 gpm, Maximum Flow Rate @ 1 Foot of Head 39 gpm, Nameplate Voltage 115V AC, Number of Speeds 1, Phase Single, Pump Type 3-Piece, Series Family Series HV, Maximum Flow Rate @ 5 Feet of Head 34 gpm, Series HV NFI Hot Water Circulating Pumps⢠1-phase models are thermally protected Cast-iron units are not for potable water3-Pc., Oil-Lubricated Booster⢠Max. working pressure: 125 psi Max. working temp.: 225 Degrees FFlexible spring-design coupler permits quiet operation. Sleeve bearings constantly circulate oil.