Taco 1-1/4" NPT, 1/2 HP, 3450 RPM, 115V, 60Hz, single-phase, cast iron in-line circulator pump with a flow range of 7 to 54 GPM and a head range of 19 to 61 feet. 2400 Series Overview Taco 2400 Series High Capacity Circulators are designed for quiet, efficient, dependable operation in medium to high flow/head hydronic heating, chilled water cooling, and hot water recirculation applications. The space-saving, close-coupled, maintenance-free motor with permanently lubricated, sealed-for-life bearings, stainless steel shaft, Noryl®impeller, and durable, carbon/silicon-carbide mechanical seal provide unmatched reliability. Available in cast iron or stainless steel construction. 2400 Series Features Compact, space-saving design Powerful, close-coupled, maintenance-free motor Superior efficiency, high starting torque Permanently lubricated and sealed for life bearings Rugged 1/2" stainless steel shaft Carbon/silicon-carbide mechanical seal for long life Universal flange to flange dimensions — ideal for retrofits Anti-condensate design for chilled water Dual electrical knock-outs Dual pressure taps, suction/discharge 2400 Series Performance Data Flow range: 0 to 90 GPM Head range: 0' to 46' Maximum fluid temperature: 225°F (107°C) Minimum fluid temperature: 40°F (4°C) Maximum working pressure: 150 psi HP: 1/2, 1/3, 1/6, 1/10 Connection sizes: 3/4" to 3" 2400 Series Applications Hydronic heating In-Floor Radiant Snow Melt High-Pressure Drop Boilers Outdoor Wood Boilers Chilled Water Cooling Geothermal Heat Pumps Primary/Secondary Loops Hydro Air Fan Coils Domestic Water Recirculation Systems