Bell & Gossett Circulator Pump, NBF Series, Model: NBF-12U/LW, 17 gpm Flow Rate, 12 ft Maximum Head, 55 W, 115 V, 0.48 A, 60 Hz, 150 psi Maximum Pressure, 2800 rpm Motor Speed Rating, 1/40 hp, 1/2 in, 3/4 in Connection, Union Connection, 1 ph Phase, In-Line Mounting, 40 to 230 deg F, Lead-Free Bronze, 6-1/8 in H x 4-7/8 in W x 5-1/16 in D, Additional Information: Noryl Impeller Material