Pneumatic And Hydraulic Equipment Page 1361

E N G I N E R I N G Oil Flow Capacity of Pipe & Tubing 2 4 10 15 20 30 Pipe Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. NPT GPM GPM GPM GPM GPM GPM 1/8 0.35 0.71 1.77 2.66 3.54 5.31 1/4 0.65 1.30 3.24 4.87 6.49 9.73 3/8 1.19 2.38 5.95 8.93 11.9 17.85 1/2 1.89 3.79 9.47 14.21 18.94 28.41 3/4 3.32 6.65 16.62 24.93 33.25 49.87 1 5.39 10.78 26.94 40.41 53.88 80.82 1-1/4 9.32 18.65 46.62 69.93 93.25 139.87 1-1/2 12.69 25.38 63.46 95.19 126.92 190.38 2 20.92 41.84 104.60 156.90 209.20 313.79 2-1/2 29.85 59.70 149.24 223.86 298.48 447.72 3 46.09 92.18 230.44 345.66 460.88 691.31 Oil Flow Capacity of Pipes Schedule 40 (Standard Weight) Pipe 2 4 10 15 20 30 Tube Wall Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. O.D. Thick GPM GPM GPM GPM GPM GPM .035 .905 1.81 4.52 6.79 9.05 13.6 .042 .847 1.63 4.23 6.35 8.47 12.7 .049 .791 1.58 3.95 5.93 7.91 11.9 1/2 .058 .722 1.44 3.61 5.41 7.22 10.8 .065 .670 1.34 3.35 5.03 6.70 10.1 .072 .620 1.24 3.10 4.65 6.20 9.30 .083 .546 1.09 2.73 4.09 5.46 8.18 .035 1.510 3.01 7.54 11.3 15.1 22.6 .042 1.430 2.85 7.16 10.7 14.3 21.4 .049 1.360 2.72 6.80 10.2 13.6 20.4 .058 1.270 2.54 6.34 9.51 12.7 19.0 5/8 .065 1.200 2.40 6.00 9.00 12.0 18.0 .072 1.130 2.26 5.66 8.49 11.3 17.0 .083 1.030 2.06 5.16 7.73 10.3 15.5 .095 .926 1.85 4.63 6.95 9.26 13.9 .049 2.08 4.17 10.4 15.6 20.8 31.2 .058 1.97 3.93 9.84 14.8 19.7 29.6 .065 1.88 3.76 9.41 14.1 18.8 28.2 3/4 .072 1.75 3.51 8.77 13.2 17.5 26.4 .083 1.67 3.34 8.35 12.5 16.7 25.0 .095 1.53 3.07 7.67 11.5 15.3 23.0 .109 1.39 2.77 6.93 10.4 13.9 20.8 .049 2.95 5.91 14.8 22.2 29.5 44.3 .058 2.82 5.64 14.1 21.1 28.2 42.3 .065 2.72 5.43 13.6 20.4 27.2 40.7 7/8 .072 2.62 5.23 13.1 19.6 26.2 39.2 .083 2.46 4.92 12.3 18.5 24.6 36.9 .095 2.30 4.60 11.5 17.2 23.0 34.4 .109 2.11 4.22 10.6 15.8 21.1 31.7 .049 3.98 7.96 19.9 29.9 39.8 59.7 .058 3.82 7.65 19.1 28.7 38.2 57.4 .065 3.70 7.41 18.5 27.8 37.0 55.6 .072 3.59 7.17 17.9 26.9 35.9 53.8 1 .083 3.40 6.81 17.0 25.5 34.0 51.1 .095 3.21 6.42 16.1 24.1 32.1 48.2 .109 3.00 6.00 15.0 22.4 29.9 44.9 .120 2.83 5.65 14.1 21.2 28.3 42.4 .049 6.50 13.0 32.5 48.7 64.9 97.4 .058 6.29 12.6 31.5 47.2 62.9 94.4 .065 6.14 12.3 30.7 46.0 61.4 92.1 .072 6.00 12.0 30.0 44.9 59.9 89.8 1-1/4 .083 5.75 11.5 28.8 43.1 57.5 86.3 .095 5.50 11.0 27.5 41.2 55.0 82.5 .109 5.21 10.4 26.1 39.1 52.1 78.2 .120 5.00 10.0 25.0 37.4 50.0 74.9 .065 9.19 18.4 45.9 68.9 91.9 138 .072 9.00 18.0 45.0 67.5 90.0 135 .083 8.71 17.4 43.5 65.3 87.1 131 1-1/2 .095 8.40 16.8 42.0 63.0 84.0 126 .109 8.04 16.1 40.2 60.3 80.4 121 .120 7.77 15.5 38.8 58.3 77.7 117 .065 12.8 25.7 64.2 96.3 128 193 .072 12.6 25.2 63.1 94.7 126 189 .083 12.3 24.6 61.4 92.1 123 184 1-3/4 .095 11.9 23.8 59.6 89.3 119. 179 .109 11.5 23.0 57.4 86.1 115 172 .120 11.2 22.3 55.8 83.7 112 167 .134 10.7 21.5 53.7 80.6 107 161 .065 17.1 34.2 85.6 128 171 257 .072 16.9 33.7 84.3 126 169 253 .083 16.5 32.9 82.3 123 165 247 2 .095 16.0 32.1 80.2 120 160 240 .109 15.5 31.1 77.7 117 155 233 .120 15.2 30.3 75.8 114 152 227 .134 14.7 29.4 73.4 110 147 220 Oil Flow Capacity of Tubing 2 4 10 15 20 30 Pipe Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. NPT GPM GPM GPM GPM GPM GPM 1/8 0.23 0.45 1.13 1.70 2.26 3.40 1/4 0.45 0.89 2.23 3.35 4.47 6.70 3/8 0.88 1.75 4.38 6.57 8.76 13.14 1/2 1.46 2.92 7.30 10.95 14.60 21.90 3/4 2.70 5.39 13.48 20.22 26.96 40.44 1 4.48 8.97 22.42 33.63 44.84 67.26 1-1/4 8.00 15.99 39.99 59.98 79.97 119.96 1-1/2 11.02 22.03 55.08 82.63 110.17 165.25 2 18.41 36.82 92.04 138.07 184.09 276.13 2-1/2 26.42 52.84 132.11 198.17 264.22 396.33 3 41.18 82.36 205.89 308.84 411.78 617.67 Schedule 80 (Extra Strong Weight) Pipe 2 4 10 15 20 30 Pipe Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. Ft/Sec. NPT GPM GPM GPM GPM GPM GPM 1/2 1.05 2.11 5.27 7.91 10.54 15.81 3/4 1.83 3.67 9.17 13.75 18.34 27.51 1 3.25 6.50 16.26 24.39 32.52 48.78 1-1/4 6.59 13.18 32.94 49.41 65.89 98.83 1-1/2 8.76 17.52 43.80 65.70 87.59 131.39 2 13.93 27.87 69.67 104.51 139.35 209.02 2-1/2 22.11 44.22 110.55 165.83 221.10 331.65 3 33.71 67.43 168.57 252.85 337.13 505.70 Schedule 160 Pipe Pipe size should be selected on the basis of oil flow velocity. Undersizing results in a high pressure and power loss and system overheating. Oversizing reduces pressure and power losses but may be unnecessarily expensive to plumb. Pump Suction Lines . . . Schedule 40 pipe should be used and a size chosen which will keep oil velocity within the range of 2 to 4 feet per second. Oil Return Lines . . . Schedule 40 pipe should be used and a size chosen which will keep oil velocity within the range of 10 to 15 feet per second. Medium Pressure Lines . . . In those lines carrying 500 to 2000 PSI, flow velocity should be kept at 15 to 20 feet per second. Use Schedule 80 or 160 pipe, or use steel tubing. High Pressure Lines . . . Flow velocity may be allowed up to 30 feet per second in lines carrying 3000 to 5000 PSI. Normally, steel tubing is used, but the tables may be used for finding pipe size, then tubing should be selected with the same inside area. Figures in the chart are GPM flow capacities of tubing, and were calculated from the formula: GPM = V x A 0.3208 , in which V = velocity of flow in feet per second, and A is inside square inch area of tubing. Figures in body of chart are GPM flows JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com 1361 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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