How Much Flow Can A 2-inch Pipe Handle?

How Much Flow Can A 2-inch Pipe Handle? Pipe Size Maximum Flow (gal/min) Head Loss (ft/100 ft) 2′′ 453.9 2-1/2′′ 75 4.1 3′′ 130 3.9 4′′ 260 4.0 How many GPM can a 2 pipe handle? Assume Average Pressure. (20-100PSI) About 12f/s flow velocity 1′′ 1.00-1.03′′ 37 gpm 1.25′′ 1.25-1.36′′ 62 gpm 1.5′′ 1.50-1.60′′ 81