The Grundfos ALPHA1 15-55F is a high-efficiency, variable-speed circulator fitted with electronically commutated motor. Designed for circulating liquids in heating systems. It features a constant pressure control mode with three settings. The intuitive one- button operation and LED display makes the selection of the settings easy. The large LED display shows the current energy consumption in Watts and estimated flow in gallons per minute. • 11 gpm @ 8 feet of head in the high setting compares with the Taco 0015e3 - 10 gpm @ 8 feet of head in the high setting |