Installation Guide

42
Sizing/Capacity Tables
Table 7.9 Propane Elevated Pressure (2 PSI with 1 PSI drop)
Maximum Capacity of HOME-FLEX® CSST in Cubic Feet per Hour (CFH) of House Propane Gas (Approximate 2520 BTU per cubic foot)
Minimum Gas Pressure: 2 PSI Pressure Drop: 1 PSI (Based on a 1.52 specic gravity of gas)
Tube Size EHD
Tubing Length (ft)
5 10 15 20 25 30 40 50 60 70 75 80 90 100 125 150 200 300 400 500
½" 18 908 637 518 448 399 364 314 280 256 236 228 221 208 197 176 160 138 112 97 87
¾" 25 3259 2353 1945 1699 1530 1404 1226 1104 1014 943 913 885 838 797 718 659 576 476 416 374
1" 31 9279 6426 5183 4450 3954 3590 3082 2738 2486 2291 2209 2135 2005 1896 1685 1530 1313 1059 910 808
Table 7.10 Propane Elevated Pressure (5 PSI with 3.5 PSI drop)
Maximum Capacity of HOME-FLEX® CSST in Cubic Feet per Hour (CFH) of House Propane Gas (Approximate 2520 BTU per cubic foot)
Minimum Gas Pressure: 5 PSI Pressure Drop: 3.5 PSI (Based on a 1.52 specic gravity of gas)
Tube Size EHD
Tubing Length (ft)
5 10 15 20 25 30 40 50 60 70 75 80 90 100 125 150 200 300 400 500
½" 18 2108 1491 1217 1054 943 861 745 667 609 563 544 527 497 471 422 385 333 272 236 211
¾" 25 7734 5469 4465 3867 3459 3157 2734 2446 2233 2067 1997 1934 1823 1729 1547 1412 1223 998 865 773
1" 31
20369 13912 11131
9502 8405 7603 6490 5741 5193 4771 4593 4433 4155 3921 3468 3137 2678 2143 1829 1618
Equivalent Hydraulic Diameter (EHD): A theoretical sizing which is used to compare the
hydraulic performance between manufacturers. A higher EHD number indicates greater
ow capacity of piping.
Tables includes losses for four 90 degree bends and two (2) end ttings. Tubing runs with
larger numbers of bends and/or tting shall be increased by an equivalent length of tubing
according to the following formula: L = 1.3 x (n) where L is the additional length of tubing
necessary and n is the number of additional ttings and/or bends.