CONTROL VALVE HANDBOOK Episode 2 Part 5 pps

Chapter 10. Engineering Data 227 Chapter 10. Engineering Data 228 Flow of Water Through Schedule 40 Steel Pipe DISCHARGE PRESSURE DROP PER 100 FEET AND VELOCITY IN SCHEDULE 40 PIPE FOR WATER AT 60_F Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Velocity (Feet per Sec.) Press . Drop (PSI) Gallons per Minute Cubic Ft. per Second 1/8” 1/4” 3/8” 1/2” 3/4” 1” 1−1/4” 1−1/2” .2 0.000446 1.13 1.86 0.616 0.359 .3 0.000668 1.69 4.22 0.924 0.903 0.504 0.159 0.317 0.061 .4 0.000891 2.26 6.98 1.23 1.61 0.672 0.345 0.422 0.086 .5 0.00111 2.82 10.5 1.54 2.39 0.840 0.539 0.528 0.167 0.301 0.033 .6 0.00134 3.39 14.7 1.85 3.29 1.01 0.751 0.633 0.240 0.361 0.041 .8 0.00178 4.52 25.0 2.46 5.44 1.34 1.25 0.844 0.408 0.481 0.102 1 0.00223 5.65 37.2 3.08 8.28 1.68 1.85 1.06 0.600 0.602 0.155 0.371 0.048 2 0.00446 11.29 134.4 6.16 30.1 3.36 6.58 2.11 2.10 1.20 0.526 0.743 0.164 0.429 0.044 3 0.00668 2” 9.25 64.1 5.04 13.9 3.17 4.33 1.81 1.09 1.114 0.336 0.644 0.090 0.473 0.043 4 0.00891 12.33 111.2 6.72 23.9 4.22 7.42 2.41 1.83 1.49 0.565 0.858 0.150 0.630 0.071 5 0.01114 2−1/2” 8.40 36.7 5.28 11.2 3.01 2.75 1.86 0.835 1.073 0.223 0.788 0.104 6 0.01337 0.574 0.044 10.08 51.9 6.33 15.8 3.61 3.84 2.23 1.17 1.29 0.309 0.946 0.145 8 0.01782 0.765 0.073 13.44 91.1 8.45 27.7 4.81 6.60 2.97 1.99 1.72 0.518 1.26 0.241 10 0.02228 0.956 0.108 0.670 0.046 3” 10.56 42.4 6.02 9.99 3.71 2.99 2.15 0.774 1.58 0.361 15 0.03342 1.43 0.224 1.01 0.094 3−1/2” 9.03 21.6 5.57 6.36 3.22 1.63 2.37 0.755 20 0.04456 1.91 0.375 1.34 0.158 0.868 0.056 12.03 37.8 7.43 10.9 4.29 2.78 3.16 1.28 25 0.05570 2.39 0.561 1.68 0.234 1.09 0.083 0.812 0.041 4” 9.28 16.7 5.37 4.22 3.94 1.93 30 0.06684 2.87 0.786 2.01 0.327 1.30 0.114 0.974 0.056 11.14 23.8 6.44 5.92 4.73 2.72 35 0.07798 3.35 1.05 2.35 0.436 1.52 0.151 1.14 0.071 0.882 0.041 12.99 32.2 7.51 7.90 5.52 3.64 40 0.08912 3.83 1.35 2.68 0.556 1.74 0.192 1.30 0.095 1.01 0.052 14.85 41.5 8.59 10.24 6.30 4.65 45 0.1003 4.30 1.67 3.02 0.668 1.95 0.239 1.46 0.117 1.13 0.064 9.67 12.80 7.09 5.85 (continued) Chapter 10. Engineering Data 229 Flow of Water Through Schedule 40 Steel Pipe (continued) DISCHARGE PRESSURE DROP PER 100 FEET AND VELOCITY IN SCHEDULE 40 PIPE FOR WATER AT 60_F DISCHARGE Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Gallons per Minute Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Cubic Ft. per Second 50 0.1114 4.78 2.03 3.35 0.839 2.17 0.288 1.62 0.142 1.26 0.076 5” 10.74 15.66 7.88 7.15 60 0.1337 5.74 2.87 4.02 1.18 2.60 0.46 1.95 0.204 1.51 0.107 12.89 22.2 9.47 10.21 70 0.1560 6.70 3.84 4.69 1.59 3.04 0.540 2.27 0.261 1.76 0.143 1.12 0.047 6” 11.05 13.71 80 0.1782 7.65 4.97 5.36 2.03 3.47 0.687 2.60 0.334 2.02 0.180 1.28 0.060 12.62 17.59 90 0.2005 8.60 6.20 6.03 2.53 3.91 0.861 2.92 0.416 2.27 0.224 1.44 0.074 14.20 22.0 100 0.2228 9.56 7.59 6.70 3.09 4.34 1.05 3.25 0.509 2.52 0.272 1.60 0.090 1.11 0.036 15.78 26.9 125 0.2785 11.97 11.76 8.38 4.71 5.43 1.61 4.06 0.769 3.15 0.415 2.01 0.135 1.39 0.055 19.72 41.4 150 0.3342 14.36 16.70 10.05 6.69 6.51 2.24 4.87 1.08 3.78 0.580 2.41 0.190 1.67 0.077 8” 175 0.3899 16.75 22.3 11.73 8.97 7.60 3.00 5.68 1.44 4.41 0.774 2.81 0.253 1.94 0.102 200 0.4456 19.14 28.8 13.42 11.68 8.68 3.87 6.49 1.85 5.04 0.985 3.21 0.323 2.22 0.130 225 0.5013 − − − − − − 15.09 14.63 9.77 4.83 7.30 2.32 5.67 1.23 3.61 0.401 2.50 0.162 1.44 0.043 250 0.557 − − − − − − − − − − − − 10.85 5.93 8.12 2.84 6.30 1.46 4.01 0.495 2.78 0.195 1.60 0.051 275 0.6127 − − − − − − − − − − − − 11.94 7.14 8.93 3.40 6.93 1.79 4.41 0.583 3.05 0.234 1.76 0.061 300 0.6684 − − − − − − − − − − − − 13.00 8.36 9.74 4.02 7.56 2.11 4.81 0.683 3.33 0.275 1.92 0.072 325 0.7241 − − − − − − − − − − − − 14.12 9.89 10.53 4.09 8.19 2.47 5.21 0.797 3.61 0.320 2.08 0.083 350 0.7798 10” − − − − − − − − − − − − 11.36 5.41 8.82 2.84 5.62 0.919 3.89 0.367 2.24 0.095 375 0.8355 − − − − − − − − − − − − 12.17 6.18 9.45 3.25 6.02 1.05 4.16 0.416 2.40 0.108 400 0.8912 − − − − − − − − − − − − 12.98 7.03 10.08 3.68 6.42 1.19 4.44 0.471 2.56 0.121 425 0.9469 − − − − − − − − − − − − 13.80 7.89 10.71 4.12 6.82 1.33 4.72 0.529 2.73 0.136 450 1.003 − − − − − − − − − − − − 14.61 8.80 11.34 4.60 7.22 1.48 5.00 0.590 2.89 0.151 475 1.059 1.93 0.054 − − − − − − − − − − − − 11.97 5.12 7.62 1.64 5.27 0.653 3.04 0.166 500 1.114 2.03 0.059 − − − − − − − − − − − − 12.60 5.65 8.02 1.81 5.55 0.720 3.21 0.182 (continued) Chapter 10. Engineering Data 230 Flow of Water Through Schedule 40 Steel Pipe (continued) DISCHARGE PRESSURE DROP PER 100 FEET AND VELOCITY IN SCHEDULE 40 PIPE FOR WATER AT 60_F DISCHARGE Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Gallons per Minute Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Cubic Ft. per Second 550 1.225 2.24 0.071 12” − − − − − − − − − − − − 13.85 6.79 8.82 2.17 6.11 0.861 3.53 0.219 600 1.337 2.44 0.083 − − − − − − − − − − − − 15.12 8.04 9.63 2.55 6.66 1.02 3.85 0.258 650 1.448 2.64 0.097 − − − − − − − − − − − − − − − − − − 10.43 2.98 7.22 1.18 4.17 0.301 10” 5” 6” 8” 700 1.560 2.85 0.112 2.01 0.047 14” − − − − − − − − − − − − 11.23 3.43 7.78 1.35 4.49 0.343 750 1.671 3.05 0.127 2.15 0.054 − − − − − − − − − − − − 12.03 3.92 8.33 1.55 4.81 0.392 800 1.782 3.25 0.143 2.29 0.061 − − − − − − − − − − − − 12.83 4.43 8.88 1.75 5.13 0.443 850 1.894 3.46 0.160 2.44 0.068 2.02 0.042 − − − − − − − − − − − − 13.64 5.00 9.44 1.96 5.45 0.497 900 2.005 3.66 0.179 2.58 0.075 2.13 0.047 − − − − − − − − − − − − 14.44 5.58 9.99 2.18 5.77 0.554 950 2.117 3.86 0.198 2.72 0.083 2.25 0.052 16” − − − − − − 15.24 6.21 10.55 2.42 6.09 0.613 1000 2.228 4.07 0.218 2.87 0.091 2.37 0.057 − − − − − − 16.04 6.84 11.10 2.68 6.41 0.675 1100 2.451 4.48 0.260 3.15 0.110 2.61 0.068 − − − − − − 17.65 8.23 12.22 3.22 7.05 0.807 1200 2.674 4.88 0.306 3.44 0.128 2.85 0.080 2.18 0.042 − − − − − − − − − − − − 13.33 3.81 7.70 .948 1300 2.896 5.29 0.355 3.73 0.150 3.08 0.093 2.36 0.048 − − − − − − − − − − − − 14.43 4.45 8.33 1.11 1400 3.119 5.70 0.409 4.01 0.171 3.32 0.107 2.54 0.055 18” 20” 15.55 5.13 8.98 1.28 1500 3.342 6.10 0.466 4.30 0.195 3.56 0.122 2.72 0.063 16.66 5.85 9.62 1.46 1600 3.565 6.51 0.527 4.59 0.219 3.79 0.138 2.90 0.071 17.77 6.61 10.26 1.65 1800 4.010 7.32 0.663 5.16 0.276 4.27 0.172 3.27 0.088 2.58 0.050 19.99 8.37 11.54 2.08 2000 4.456 8.14 0.808 5.73 0.339 4.74 0.209 3.63 0.107 2.87 0.060 22.21 10.3 12.82 2.55 2500 5.570 10.17 1.24 7.17 0.515 5.93 0.321 4.54 0.163 3.59 0.091 24” 16.03 3.94 3000 6.684 12.20 1.76 8.60 0.731 7.11 0.451 5.45 0.232 4.30 0.129 3.46 0.075 19.24 5.59 3500 7.798 14.24 2.38 10.03 0.982 8.30 0.607 6.35 0.312 5.02 0.173 4.04 0.101 22.44 7.56 4000 8.912 16.27 3.08 11.47 1.27 9.48 0.787 7.26 0.401 5.74 0.222 4.62 0.129 3.19 0.052 25.65 9.80 4500 10.03 18.31 3.87 12.90 1.60 10.67 0.990 8.17 0.503 6.46 0.280 5.20 0.162 3.59 0.065 28.87 12.2 (continued) Chapter 10. Engineering Data 231 Flow of Water Through Schedule 40 Steel Pipe (continued) DISCHARGE PRESSURE DROP PER 100 FEET AND VELOCITY IN SCHEDULE 40 PIPE FOR WATER AT 60_F DISCHARGE Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Gallons per Minute Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Press. Drop (PSI) Velocity (Feet per Sec.) Cubic Ft. per Second 5000 11.14 20.35 4.71 14.33 1.95 11.85 1.21 9.08 0.617 7.17 0.340 5.77 0.199 3.99 0.079 − − − − − − 6000 13.37 24.41 6.74 17.20 2.77 14.23 1.71 10.89 0.877 8.61 0.483 6.93 0.280 4.79 0.111 − − − − − − 7000 15.60 28.49 9.11 20.07 3.74 16.60 2.31 12.71 1.18 10.04 0.652 8.08 0.376 5.59 0.150 − − − − − − 8000 17.82 − − − − − − 22.93 4.84 18.96 2.99 14.52 1.51 11.47 0.839 9.23 0.488 6.38 0.192 − − − − − − 9000 20.05 − − − − − − 25.79 6.09 21.34 3.76 16.34 1.90 12.91 1.05 10.39 0.608 7.18 0.242 − − − − − − 10,000 22.28 − − − − − − 28.66 7.46 23.71 4.61 18.15 2.34 14.34 1.28 11.54 0.739 7.98 0.294 − − − − − − 12,000 26.74 − − − − − − 34.40 10.7 28.45 6.59 21.79 3.33 17.21 1.83 13.85 1.06 9.58 0.416 − − − − − − 14,000 31.19 − − − − − − − − − − − − 33.19 8.89 25.42 4.49 20.08 2.45 16.16 1.43 11.17 0.562 − − − − − − 16,000 35.65 − − − − − − − − − − − − − − − − − − 29.05 5.83 22.95 3.18 18.47 1.85 12.77 0.723 − − − − − − 18,000 40.10 − − − − − − − − − − − − − − − − − − 32.68 7.31 25.82 4.03 20.77 2.32 14.36 0.907 − − − − − − 20,000 44.56 − − − − − − − − − − − − − − − − − − 36.31 9.03 28.69 4.93 23.08 2.86 15.96 1.12 − − − − − − For pipe lengths other than 100 feet, the pressure drop is proportional to the length. Thus, for 50 feet of pipe, the pressure drop is approximately one−half the value given in the table—for 300 feet, three times the given value, etc. Velocity is a function of the cross sectional flow area; thus it is constant for a given flow rate and is independent of pipe length. For calculations for pipe other than Schedule 40, see explanation later in this chapter. Extracted from Technical Paper No. 410, Flow of Fluids, with permission of Crane Co. Chapter 10. Engineering Data 232 Flow of Air Through Schedule 40 Steel Pipe FREE AIR q’ m COMPRESSED AIR PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE Cubic Feet Per Minute at 60_F and 14.7 psia Cubic Feet Per Minute at 60_F and 100 psig 1/8” 1/4” 3/8” 1/2” 3/4” 1” 1−1/4” 1−1/2” 2” 1 0.128 0.361 0.083 0.018 2 0.256 1.31 0.285 0.064 0.020 3 0.384 3.06 0.605 0.133 0.042 4 0.513 4.83 1.04 0.226 0.071 5 0.641 7.45 1.58 0.343 0.106 0.027 6 0.769 10.6 2.23 0.408 0.148 0.037 8 1.025 18.6 3.89 0.848 0.255 0.062 0.019 10 1.282 28.7 5.96 1.26 0.356 0.094 0.029 15 1.922 − − − 13.0 2.73 0.834 0.201 0.062 20 2.563 − − − 22.8 4.76 1.43 0.345 0.102 0.026 25 3.204 − − − 35.6 7.34 2.21 0.526 0.156 0.039 0.019 30 3.845 − − − − − − 10.5 3.15 0.748 0.219 0.055 0.026 35 4.486 − − − − − − 14.2 4.24 1.00 0.293 0.073 0.035 40 5.126 − − − − − − 18.4 5.49 1.30 0.379 0.095 0.044 45 5.767 − − − − − − 23.1 6.90 1.62 0.474 0.116 0.055 50 6.408 2−1/2” 28.5 8.49 1.99 0.578 0.149 0.067 0.019 60 7.690 40.7 12.2 2.85 0.819 0.200 0.094 0.027 70 8.971 − − − 16.5 3.83 1.10 0.270 0.126 0.036 80 10.25 0.019 − − − 21.4 4.96 1.43 0.350 0.162 0.046 (continued) Chapter 10. Engineering Data 233 Flow of Air Through Schedule 40 Steel Pipe (continued) FREE AIR q’ m PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE COMPRESSED AIR Cubic Feet Per Minute at 60_F and 14.7 psia PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE Cubic Feet Per Minute at 60_F and 100 psig 90 11.53 0.023 3” − − − 27.0 6.25 1.80 0.437 0.203 0.058 100 12.82 0.029 3−1/2” 33.2 7.69 2.21 0.534 0.247 0.070 125 16.02 0.044 - - - 11.9 3.39 0.825 0.380 0.107 150 19.22 0.062 0.021 - - - 17.0 4.87 1.17 0.537 0.151 175 22.43 0.083 0.028 - - - 23.1 6.60 1.58 0.727 0.205 200 25.63 0.107 0.036 - - - 30.0 8.54 2.05 0.937 0.264 225 28.84 0.134 0.045 0.022 4” 37.9 10.8 2.59 1.19 0.331 250 32.04 0.164 0.055 0.027 - - - 13.3 3.18 1.45 0.404 275 35.24 0.191 0.066 0.032 - - - 16.0 3.83 1.75 0.484 300 38.45 0.232 0.078 0.037 - - - 19.0 4.56 2.07 0.573 325 41.65 0.270 0.090 0.043 - - - 22.3 5.32 2.42 0.673 350 44.87 0.313 0.104 0.050 - - - 25.8 6.17 2.80 0.776 375 48.06 0.356 0.119 0.057 0.030 - - - 29.6 7.05 3.20 0.887 400 51.26 0.402 0.134 0.064 0.034 - - - 33.6 8.02 3.64 1.00 425 54.47 0.452 0.151 0.072 0.038 - - - 37.9 9.01 4.09 1.13 450 57.67 0.507 0.168 0.081 0.042 - - - - - - 10.2 4.59 1.26 475 60.88 0.562 0.187 0.089 0.047 5” - - - 11.3 5.09 1.40 500 64.08 0.623 0.206 0.099 0.052 - - - 12.5 5.61 1.55 550 70.49 0.749 0.248 0.118 0.062 - - - 15.1 6.79 1.87 600 76.90 0.887 0.293 0.139 0.073 - - - 18.0 8.04 2.21 650 83.30 1.04 0.342 0.163 0.086 - - - ‘21.1 9.43 2.60 700 89.71 1.19 0.395 0.188 0.099 0.032 24.3 10.9 3.00 (continued) Chapter 10. Engineering Data 234 Flow of Air Through Schedule 40 Steel Pipe (continued) FREE AIR q’ m PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE COMPRESSED AIR Cubic Feet Per Minute at 60_F and 14.7 psia PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE Cubic Feet Per Minute at 60_F and 100 psig 750 96.12 1.36 0.451 0.214 0.113 0.036 6” 27.9 12.6 3.44 800 102.5 1.55 0.513 0.244 0.127 0.041 31.8 14.2 3.90 850 108.9 1.74 0.576 0.274 0.144 0.046 35.9 16.0 4.40 900 115.3 1.95 0.642 0.305 0.160 0.051 40.2 18.0 4.91 950 121.8 2.18 0.715 0.340 0.178 0.057 0.023 - - - 20.0 5.47 1,000 128.2 2.40 0.788 0.375 0.197 0.063 0.025 - - - 22.1 6.06 1,100 141.0 2.89 0.948 0.451 0.236 0.075 0.030 - - - 26.7 7.29 1,200 153.8 3.44 1.13 0.533 0.279 0.089 0.035 - - - 31.8 8.63 1,300 166.6 4.01 1.32 0.626 0.327 0.103 0.041 - - - 37.3 10.1 1,400 179.4 4.65 1.52 0.718 0.377 0.119 0.047 8” 10” 11.8 1,500 192.2 5.31 1.74 0.824 0.431 0.136 0.054 13.5 1,600 205.1 6.04 1.97 0.932 0.490 0.154 0.061 15.3 1,800 230.7 7.65 2.50 1.18 0.616 0.193 0.075 19.3 2,000 256.3 9.44 3.06 1.45 0.757 0.237 0.094 0.023 23.9 2,500 320.4 14.7 4.76 2.25 1.17 0.366 0.143 0.035 37.3 3,000 384.5 21.1 6.82 3.20 1.67 0.524 0.204 0.051 0.016 12” 3,500 448.6 28.8 9.23 4.33 2.26 0.709 0.276 0.068 0.022 4,000 512.6 37.6 12.1 5.66 2.94 0.919 0.358 0.088 0.028 4,500 576.7 47.6 15.3 7.16 3.69 1.16 0.450 0.111 0.035 5,000 640.8 - - - 18.8 8.85 4.56 1.42 0.552 0.136 0.043 0.018 6,000 769.0 - - - 27.1 12.7 6.57 2.03 0.794 0.195 0.061 0.025 7,000 897.1 - - - 36.9 17.2 8.94 2.76 1.07 0.262 0.082 0.034 (continued) Chapter 10. Engineering Data 235 Flow of Air Through Schedule 40 Steel Pipe (continued) FREE AIR q’ m PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE COMPRESSED AIR Cubic Feet Per Minute at 60_F and 14.7 psia PRESSURE DROP OF AIR IN POUNDS PER SQUARE INCH PER 100 FEET OF SCHEDULE 40 PIPE FOR AIR AT 100 POUNDS PER SQUARE INCH GAUGE PRESSURE AND 60_F TEMPERATURE Cubic Feet Per Minute at 60_F and 100 psig 8,000 1025 - - - - - - 22.5 11.7 3.59 1.39 0.339 0.107 0.044 9,000 1153 - - - - - - 28.5 14.9 4.54 1.76 0.427 0.134 0.055 10,000 1282 - - - - - - 35.2 18.4 5.60 2.16 0.526 0.164 0.067 11,000 1410 - - - - - - - - - 22.2 6.78 2.62 0.633 0.197 0.081 12,000 1538 - - - - - - - - - 26.4 8.07 3.09 0.753 0.234 0.096 13,000 1666 - - - - - - - - - 31.0 9.47 3.63 0.884 0.273 0.112 14,000 1794 - - - - - - - - - 36.0 11.0 4.21 1.02 0.316 0.129 15,000 1922 - - - - - - - - - - - - 12.6 4.84 1.17 0.364 0.148 16,000 2051 - - - - - - - - - - - - 14.3 5.50 1.33 0.411 0.167 18,000 2307 - - - - - - - - - - - - 18.2 6.96 1.68 0.520 0.213 20,000 2563 - - - - - - - - - - - - 22.4 8.60 2.01 0.642 0.260 22,000 2820 - - - - - - - - - - - - 27.1 10.4 2.50 0.771 0.314 24,000 3076 - - - - - - - - - - - - 32.3 12.4 2.97 0.918 0.371 26,000 3332 - - - - - - - - - - - - 37.9 14.5 3.49 1.12 0.435 28,000 3588 - - - - - - - - - - - - - - - 16.9 4.04 1.25 0.505 30,000 3845 - - - - - - - - - - - - - - - 19.3 4.64 1.42 0.520 Chapter 10. Engineering Data 236 For lengths of pipe other than 100 feet, the pressure drop is proportional to the length. Thus, for 50 feet of pipe, the pressure drop is approximately one−half the value given in the table—for 300 feet, three times the given value, etc. The pressure drop is also inversely proportional to the absolute pressure and directly proportional to the absolute temperature. Therefore, to determine the pressure drop for inlet or average pressures other than 100 psi and at temperatures other than 60_F, multiply the values given in the table by the ratio: ǒ 100 ) 14.7 P ) 14.7 Ǔǒ 460 ) t 520 Ǔ where: P is the inlet or average gauge pressure in pounds per square inch, and, t is the temperature in degrees Fahrenheit under consideration. The cubic feet per minute of compressed air at any pressure is inversely propor- tional to the absolute pressure and directly proportional to the absolute tempera- ture. To determine the cubic feet per minute of compressed air at any temperature and pressure other than standard conditions, multiply the value of cubic feet per min- ute of free air by the ratio: ǒ 14.7 14.7 ) P Ǔǒ 460 ) t 520 Ǔ Calculations for Pipe Other than Schedule 40 To determine the velocity of water, or the pressure drop of water or air, through pipe other than Schedule 40, use to following formulas: v a + v 40 ǒ d 40 d a Ǔ 2 DP a + DP 40 ǒ d 40 d a Ǔ 5 Subscript a refers to the Schedule of pipe through which velocity or pressure drop is desired. Subscript 40 refers to the velocity or pressure drop through Schedule 40 pipe, as given in the tables earlier in this chapter titled Flow of Water Through Schedule 40 Steel Pipe. Extracted from Technical Paper No. 410, Flow of Fluids, with permission of Crane Co. [...]... 2. 37 2. 72 3.63 4.86 6.41 1.066 0.963 0. 927 0.8 82 0.766 0.609 0.4 12 3. 958 3. 654 3 .54 7 3. 356 2. 953 2. 2 35 1.774 0. 027 49 0. 0 25 38 0. 024 63 0. 023 30 0. 020 51 0.0 15 52 0.0 123 2 1.61 2. 64 3.00 3. 65 5. 02 7.46 9.03 1.7 15 1 .58 3 1 .53 7 1. 454 1 .28 0 0.969 0.769 5. 764 5. 453 4.9 05 4.788 4 .23 8 3 .54 7 2. 463 0.04003 0.03787 0.03406 0.03 3 25 0. 029 43 0. 024 63 0.01711 2. 48 3 .53 5. 40 5. 79 7.66 10.01 13.69 2. 498 2. 363 2. 1 25 2. 0 75 1.837... No 5. 563 ––– ––– STD XS ––– ––– XXS ––– ––– 40 80 120 160 ––– 5S 10S 40S 80S ––– ––– ––– 0.109 0.134 0 . 25 8 0.3 75 0 .50 0 0. 6 25 0. 750 5. 3 45 5 .29 5 5.047 4.813 4 .56 3 4.313 4.063 1.868 2. 2 85 4.300 6.1 12 7. 953 9.696 11.34 22 .44 22 . 02 20.01 18.19 16. 35 14.61 12. 97 0. 155 82 0.1 52 9 2 0.13893 0. 126 35 0.11 356 0.10146 0.09004 6.36 7.77 14. 62 20.78 27 .04 32. 96 38 .55 9. 723 9 .5 42 8.669 7.884 7.086 6.331 5. 618 6. 6 25 –––... 82. 52 80.69 78. 85 74.66 71.81 68.10 64 .50 60.13 56 . 75 (continued) (a) (Square Inches) WEIGHT PIPE (LB/FT) WATER WEIGHT (LB/FT PIPE) 0.3 854 9 0.37837 0.36006 0. 35 52 9 0.34741 0.3 329 4 0.31711 0.30166 0 .28 1 72 0 .26 733 0 . 25 779 0 . 25 317 9.93 13.40 22 .36 24 .70 28 .55 35. 64 43.39 50 . 95 60.71 67.76 72. 42 74.69 24 . 05 23 .61 22 .47 22 .17 21 .68 20 .78 19.79 18. 82 17 .58 16.68 16.09 15. 80 0 .59 926 0 .5 921 9 0 .57 303 0 .56 0 35. .. 16. 05 18.66 21 .21 25 . 02 31 .22 38.49 44.36 50 .07 55 .63 TRANSVERSE INTERNAL AREA (a) (Square Inches) 147 .2 1 45. 8 143.1 140 .5 137.9 1 35. 3 1 32. 7 128 .9 122 .7 1 15. 4 109.6 103.9 98.31 (A) (Square Feet) 1. 021 90 1.0 123 7 0.994 02 0.9 758 5 0. 957 55 0.939 42 0. 921 75 0.89 52 9 0.8 52 2 1 0.801 72 0.76098 0. 721 31 0.6 827 1 WEIGHT PIPE (LB/FT) 23 .07 27 .73 36.71 45. 61 54 .57 63.44 72. 09 85. 05 106.13 130. 85 150 .79 170 .21 189.11 WATER... 2. 624 2. 300 0.8910 1 .27 4 1. 956 2. 228 3.016 4 .21 3 5. 466 8.730 8.347 7.6 65 7.393 6.6 05 5.408 4. 155 0.06063 0. 057 96 0. 05 323 0. 051 34 0.0 458 7 0.03 755 0. 028 85 3.03 4.33 6. 65 7 .58 10 . 25 14. 32 18 .58 3.783 3.617 3. 322 3 .20 3 2. 8 62 2.343 1.800 4.000 ––– ––– 30 STD XS ––– ––– ––– 40 80 5S 10S ––– 40S 80S 0.083 0. 120 0.188 0 .22 6 0.318 3.834 3.760 3. 624 3 .54 8 3.364 1. 021 1.463 2. 251 2. 680 3.678 11 .55 11.10 10.31 9.887... 0. 154 0 .21 8 0.344 0.436 2. 2 45 2. 157 2. 1 25 2. 067 1.939 1.687 1 .50 3 0.4717 0.7760 0.8836 1.0 75 1.477 2. 1 95 2. 656 2. 8 75 ––– ––– ––– STD XS ––– XXS ––– ––– 30 40 80 160 ––– 5S 10S ––– 40S 80S ––– ––– 0.083 0. 120 0.188 0 .20 3 0 .27 6 0.3 75 0 .5 52 2.709 2. 6 35 2. 499 2. 469 2. 323 2. 1 25 1.771 0. 728 0 1.039 1 .58 7 1.704 2. 254 2. 9 45 4. 028 (continued) (a) (Square Inches) (A) (Square Feet) Chapter 11 Pipe Data 24 0 Pipe... XS ––– ––– XXS ––– ––– 40 80 120 160 ––– 5S 10S 40S 80S ––– ––– ––– 0.109 0.134 0 .28 0.4 32 0 .5 62 0.719 0.864 6.407 6. 357 6.0 65 5.761 5. 501 5. 187 4.897 2. 231 2. 733 5. 581 8.4 05 10.70 13.34 15. 64 32. 24 31.74 28 .89 26 .07 23 .77 21 .13 18.83 0 .22 389 0 .22 041 0 .20 063 0.181 02 0.1 650 5 0.14674 0.13079 7.60 9 .29 18.97 28 .57 36.39 45. 35 53.16 13.97 13. 75 12. 52 11.30 10.30 9. 157 8.1 62 (continued) (a) (Square Inches)... 176.7 169.4 160.9 1 52 . 6 144 .5 1 35. 3 128 .9 (A) (Square Feet) 1.33 926 1.33141 1.31036 1 .28 948 1 .26 843 1 .22 719 1.17667 1.11 720 1. 059 57 1.00317 0.939 42 0.89 52 9 WEIGHT PIPE (LB/FT) 27 .90 31. 75 42. 05 52 . 27 62. 58 82. 77 107 .50 136.61 164. 82 1 92. 43 22 3.64 24 5 . 25 WATER WEIGHT (LB/FT PIPE) 83 .57 83.08 81.77 80.46 79. 15 76 .58 73. 42 69.71 66. 12 62. 60 58 . 62 55 .87 Chapter 11 Pipe Data 24 6 Pipe Data (continued) Carbon... 51 . 85 51.16 50 .03 47.94 45. 66 43.44 40 .57 38 .50 37. 12 36.46 10. 750 ––– ––– ––– ––– STD XS ––– ––– ––– XXS ––– ––– ––– 20 30 40 60 80 100 120 140 160 5S 10S ––– ––– 40S 80S ––– ––– ––– ––– ––– 0.134 0.1 65 0 . 25 0 0.307 0.3 65 0 .50 0 0 .59 4 0.719 0.844 1.000 1. 1 25 10.4 82 10. 420 10 . 25 0 10.136 10. 020 9. 750 9 .5 62 9.3 12 9.0 62 8. 750 8 .50 0 4.469 5. 487 8 .24 7 10.07 11.91 16.10 18. 95 22 .66 26 .27 30.63 34. 02 86 .29 85 .28 ... 0.1 65 0.188 0 . 25 0 0.3 12 0.3 75 0 .50 0 0. 656 0.844 1.031 1 .21 9 1.438 1 .59 4 INSIDE DIAMETER (d) (INCHES) 15. 670 15. 624 15. 500 15. 376 15 . 25 0 15. 000 14.688 14.3 12 13.938 13 .5 62 13. 124 12. 8 12 (continued) AREA OF METAL (SQUARE INCHES) 8 .20 8 9.339 12. 37 15. 38 18.41 24 . 35 31. 62 40.19 48.48 56 .61 65. 79 72. 14 TRANSVERSE INTERNAL AREA (a) (Square Inches) 1 92. 9 191.7 188.7 1 85. 7 1 82. 7 176.7 169.4 160.9 1 52 . 6 144.5 . 2. 3 75 ––– ––– ––– STD XS ––– XXS ––– ––– 30 40 80 160 ––– 5S 10S ––– 40S 80S ––– ––– 0.0 65 0.109 0. 1 25 0. 154 0 .21 8 0.344 0.436 2. 2 45 2. 157 2. 1 25 2. 067 1.939 1.687 1 .50 3 0.4717 0.7760 0.8836 1.0 75 1.477 2. 1 95 2. 656 3. 958 3. 654 3 .54 7 3. 356 2. 953 2. 2 35 1.774 0. 027 49 0. 0 25 38 0. 024 63 0. 023 30 0. 020 51 0.0 15 52 0.0 123 2 1.61 2. 64 3.00 3. 65 5. 02 7.46 9.03 1.7 15 1 .58 3 1 .53 7 1. 454 1 .28 0 0.969 0.769 2 1 /2. 14.000 ––– ––– ––– ––– STD ––– XS ––– ––– ––– ––– ––– ––– ––– ––– 10 20 30 40 ––– 60 80 100 120 140 160 5S 10S ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– 0. 156 0.188 0 . 25 0 0.3 12 0.3 75 0.438 0 .50 0 0 .59 4 0. 750 0.938 1.094 1 . 25 0 1.406 13.688 13. 624 13 .50 0 13.376 13 . 25 0 13. 124 13.000 12. 8 12 12. 50 0 12. 124 11.8 12 11 .50 0 11.188 6.7 85 8. 158 10.80 13. 42 16. 05 18.66 21 .21 25 . 02 31 .22 38.49 44.36 50 .07 55 .63 147 .2 1 45. 8 143.1 140 .5 137.9 1 35. 3 1 32. 7 128 .9 122 .7 1 15. 4 109.6 103.9 98.31 1. 021 90 1.0 123 7 0.994 02 0.9 758 5 0. 957 55 0.939 42 0. 921 75 0.89 52 9 0.8 52 2 1 0.801 72 0.76098 0. 721 31 0.6 827 1 23 .07 27 .73 36.71 45. 61 54 .57 63.44 72. 09 85. 05 106.13 130. 85 150 .79 170 .21 189.11 63.77 63.17 62. 03 60.89 59 . 75 58. 62 57 . 52 55 .87 53 .18 50 .03 47.49 45. 01 42. 60 (continued) Chapter. 16.000 ––– ––– ––– ––– STD XS ––– ––– ––– ––– ––– ––– ––– ––– 10 20 30 40 60 80 100 120 140 160 5S 10S ––– ––– ––– ––– ––– ––– ––– ––– ––– ––– 0.1 65 0.188 0 . 25 0 0.3 12 0.3 75 0 .50 0 0. 656 0.844 1.031 1 .21 9 1.438 1 .59 4 15. 670 15. 624 15. 500 15. 376 15 . 25 0 15. 000 14.688 14.3 12 13.938 13 .5 62 13. 124 12. 8 12 8 .20 8 9.339 12. 37 15. 38 18.41 24 . 35 31. 62 40.19 48.48 56 .61 65. 79 72. 14 1 92. 9 191.7 188.7 1 85. 7 1 82. 7 176.7 169.4 160.9 1 52 . 6 144 .5 1 35. 3 128 .9 1.33 926 1.33141 1.31036 1 .28 948 1 .26 843 1 .22 719 1.17667 1.11 720 1. 059 57 1.00317 0.939 42 0.89 52 9 27 .90 31. 75 42. 05 52 . 27 62. 58 82. 77 107 .50 136.61 164. 82 1 92. 43 22 3.64 24 5 . 25 83 .57 83.08 81.77 80.46 79. 15 76 .58 73. 42 69.71 66. 12 62. 60 58 . 62 55 .87 (continued)