Hydronic Circulating Pump Connection Type Flange Face to Face Dimension 6 1/2 in Flange or Union Included Yes For Use With Potable Systems No Maximum Feet of Head 26 ft Maximum Flow Rate @ 10 Feet of Head 31 gpm Maximum Flow Rate @ 15 Feet of Head 23 gpm Nameplate Voltage 230V AC Number of Speeds Variable Phase Single Pump Type Energy Efficient Series Family 00E Maximum Flow Rate @ 20 Feet of Head 16 gpm Maximum Flow Rate @ 25 Feet of Head 10 gpm