Installation Instructions

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6.0 Sizing Tables
*Table includes losses for four 90 degree bends and two (2) end fittings. Tubing runs with larger numbers of bends and/or fitting shall be increased by an equivalent length of
tubing according to the following formula:
L = 1.3 (n) L = is the additional length (ft.) of tubing to be added to actual run. n = is the number of additional fittings and/or bends.
CAPACITY TABLES OF CSST – TABLE 1 Maximum Capacity of Pro-Flex
®
CSST in Cubic Feet per Hour of Gas Gas Pressure: 6 – 7 inches WC (1/4 psig) Pressure Drop: 0.5 inch WC (Based on a 0.6 Specific Gravity Gas)
Tubing Length (feet)
Tube Size (EHD) 5 10 15 20 25 30 40 50 60 70 80 90 100 150 200 250 300 3/8” 15 64 45 37 32 29 26 23 20 18 17 16 15 14 12 10 9 8 1/2” 18 95 68 56 49 44 40 35 32 29 27 25 24 23 19 16 14 13 3/4” 25 283 200 163 141 126 115 100 89 81 75 70 66 63 51 44 40 36 1” 31 626 424 337 287 253 228 194 171 154 141 131 123 116 92 78 69 62 1
1
/4” 37 950 671 547 474 423 386 334 299 273 252 236 222 211 172 149 133 121
*Table includes losses for four 90 degree bends and two (2) end fittings. Tubing runs with larger numbers of bends and/or fitting shall be increased by an equivalent length of
tubing according to the following formula:
L = 1.3 (n) L = is the additional length (ft.) of tubing to be added to actual run. n = is the number of additional fittings and/or bends.
CAPACITY TABLES OF CSST – TABLE 2 Maximum Capacity of Pro-Flex
®
CSST in Cubic Feet per Hour of Gas Gas Pressure: 6 – 7 inches WC (1/4 psig) Pressure Drop: 1.0 inch WC (Based on a 0.6 Specific Gravity Gas)
Tubing Length (feet)
Tube Size (EHD) 5 10 15 20 25 30 40 50 60 70 80 90 100 150 200 250 300 3/8” 15 90 64 52 45 41 37 32 29 26 24 23 21 20 16 14 13 12 1/2” 18 132 95 78 68 61 56 49 44 40 37 35 33 32 26 23 20 19 3/4” 25 400 283 231 200 179 163 141 126 115 107 100 94 89 73 63 56 51 1” 31 925 626 498 424 373 337 287 253 228 209 194 181 171 136 116 102 92 1
1
/4” 37 1346 950 775 671 600 547 474 423 386 357 334 315 299 244 211 188 172
NATURAL GAS LOW PRESSURE Locate proper sizing table based on total pressure drop allowed in piping system by local utility for each installation.