Parker Parflex, Руководство по проектированию и установке, Страница: 52 / 64

Parker Hannifin Corporation
Parflex Division
Ravenna, Ohio
Bulletin No. 4660-PGP2T
Parflex
®
Flexible Gas Piping System
Design and Installation Guide Section 7.0 Sizing Tables
7.1 CSST Tables Natural Gas
Caution: Locate proper sizing table based on total pressure drop allowed in piping system by local utility for each
installation.
*Table includes losses for four 90 degree bends and two end fittings. To determine flow capacity for tubing runs with additional bends
and/or fittings, add the appropriate number of feet to the actual run length using the formula: L = 1.3n. L = number of feet to be added to
actual run length; n = number of additional bends and/or fittings.
Table 1*
Maximum Flow Capacity of Parker Parflex Tubing in Cubic Feet per Hour
Gas Pressure: 0.5 psi or less; Pressure Drop: 0.5 in. WC
(Based on a 0.60 Specific Gravity Gas)
Part Tube
Tubing Length (ft.)
No. Size 5 10 15 20 25 30 40 50 60 70 80 90 100 125 150 200 250 300 350 400 450 500
PGP-6 3/8” 49 35 28 25 22 20 17 16 14 13 12 12 11 10 9 8 7 6 6 5 5 4
PGP-8 1/2” 119 87 72 64 57 53 47 42 39 36 34 32 31 28 26 23 20 19 18 17 16 15
PGP-12 3/4” 228 163 134 117 105 96 84 75 69 64 60 57 54 49 44 39 35 32 30 28 26 25
PGP-16 1” 601 422 343 297 265 241 208 186 169 157 146 138 130 116 106 92 82 75 69 64 61 57
PGP-20 1-1/4” 1037 746 615 536 482 442 386 347 318 295 277 262 249 224 205 179 161 148 137 129 122 116
PGP-32 2" 3181 2274 1869 1626 1459 1336 1162 1043 955 886 831 785 746 669 613 533 479 438 407 381 360 342
Table 2*
Maximum Flow Capacity of Parker Parflex Tubing in Cubic Feet per Hour
Gas Pressure: 0.5 psi or less; Pressure Drop: 1.0 in. WC
(Based on a 0.60 Specific Gravity Gas)
Part Tube
Tubing Length (ft.)
No. Size 5 10 15 20 25 30 40 50 60 70 80 90 100 125 150 200 250 300 350 400 450 500
PGP-6 3/8” 66 48 40 35 32 29 26 24 22 20 19 18 17 16 15 13 12 11 11 10 10 9
PGP-8 1/2” 162 117 97 85 77 71 63 58 53 50 48 46 44 40 38 34 32 30 29 27 27 26
PGP-12 3/4” 326 233 191 166 149 137 119 107 98 91 85 80 76 68 63 54 49 45 41 39 37 35
PGP-16 1”
860 604 491 424 379 345 298 266 242 224 209 197 187 167 152 131 117 107 99 92 87 82
PGP-20 1-1/4” 1442 1037 885 746 671 615 536 482 442 411 386 364 347 312 286 249 224 205 191 179 169 161
PGP-32 2" 4449 3181 2614 2274 2041 1869 1626 1459 1336 1240 1162 1098 1043 936 857 746 669 613 569 533 504 479
Table 3*
Maximum Flow Capacity of Parker Parflex Tubing in Cubic Feet per Hour
Gas Pressure: 0.5 psi or less; Pressure Drop: 1.5 in. WC
(Based on a 0.60 Specific Gravity Gas)
Part Tube
Tubing Length (ft.)
No. Size 5 10 15 20 25 30 40 50 60 70 80 90 100 125 150 200 250 300 350 400 450 500
PGP-6 3/8” 86 61 52 45 42 38 34 30 28 26 24 23 22 20 18 16 14 13 12 11 11 10
PGP-8 1/2” 205 147 122 106 97 89 79 74 67 64 62 57 57 52 50 45 44 41 40 37 37 36
PGP-12 3/4” 424 303 248 215 193 178 154 139 127 118 110 103 98 90 82 69 63 58 52 50 48 45
PGP-16 1” 1119 786 639 551 493 449 388 346 315 291 272 256 244 218 198 170 152 139 129 120 113 107
PGP-20 1-1/4” 1749 1258 1037 904 813 746 650 585 536 498 468 442 420 378 347 302 272 249 232 217 205 195
PGP-32 2" 5413 3870 3181 2767 2484 2274 1978 1776 1626 1509 1414 1336 1270 1140 1043 908 815 746 692 649 613 582