
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 (Continued)
Propane
Caution: Locate proper sizing table based on total pressure drop allowed in piping system by local utility for each
installation.
Note
: Table 12 does not include the effects of pressure drop across the line regulator. If regulator pressure drop exceeds 17" WC across
325-3 regulator or 325-5A regulator,
DO NOT USE TABLE 11. CONTACT PARKER AT
1-888-FASTMATE
.
Table 12*
Maximum Flow Capacity of Parker Parflex Tubing in Thousands of BTU per Hour of Undiluted Liquefied Petroleum Gas
Gas Pressure: 11.0 in. WC; Pressue Drop: 0.5 in. WC
(Based on a 1.52 Specific Gravity LP 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”
82
58
47
41
37
33
29
26
24
22
20
19
18
16
15
13
12
11
10
9
9
8
PGP-8
1/2”
197 144 120 106
95
88
77
70
64
60
57
54
51
46
43
37
34
31
29
27
26
25
PGP-12
3/4”
378 271 223 194 174 160 139 125 115 106 100
94
90
81
74
64
58
53
49
46
44
41
PGP-16
1”
996 701 570 492 439 400 346 308 281 260 243 229 217 193 176 152 136 124 114 107 101
95
PGP-20 1-1/4”
1651 1188 979 854 768 704 615 553 506 470 441 417 397 357 326 285 256 236 218 205 194 185
PGP-32
2"
5065 3612 2976 2589 2323 2127 1850 1661 1521 1411 1323 1250 1188 1065 976 849 763 697 648 607 573 545
Table 13*
Maximum Flow Capacity of Parker Parflex Tubing in Thousands of BTU per Hour of Undiluted Liquefied Petroleum Gas
Gas Pressure: 13.0 - 14.0 in. WC (1/2 psig); Pressure Drop: 2.5 in. WC
(Based on a 1.52 Specific Gravity LP 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”
167 121 101
88
80
74
65
58
54
50
47
45
43
39
36
32
29
27
25
24
23
22
PGP-8
1/2”
430 311 257 225 202 186 162 146 134 125 117 111 106
95
88
77
69
63
59
55
52
50
PGP-12
3/4”
843 602 495 430 386 353 307 276 253 234 220 207 197 177 162 141 126 116 107 101
95
90
PGP-16
1”
2292 1636 1340 1161 1038 947 817 728 662 610 568 533 503 445 402 341 299 267 243 223 207 193
PGP-20 1-1/4”
3551 2518 2076 1810 1628 1493 1302 1171 1074 997 936 885 842 757 694 606 545 499 463 435 411 391
PGP-32
2"
11037
7892 6486 5642 5065 4637 4033 3621 3315 3076 2884 2725 2589 2323 2127 1850 1661 1521 1411 1323 1250 1188
Table 14*
Maximum Flow Capacity of Parker Parflex Tubing in Thousands of BTU per Hour of Undiluted Liquefied Petroleum Gas
Gas Pressure: 2 psig; Pressure Drop: 1.0 psig
(Based on a 1.52 Specific Gravity LP 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”
646 448 361 310 276 250 215 191 173 160 149 140 132 118 107
92
82
74
68
64
60
57
PGP-8
1/2”
1313 943 776 677 608 557 486 436 400 372 349 329 313 282 258 225 202 185 172 161 153 145
PGP-12
3/4”
2437 1765 1462 1279 1153 1059 927 835 767 714 671 635 605 545 501 438 395 363 338 318 301 286
PGP-16
1”
7060 4947 4018 3467 3092 2816 2429 2167 1973 1823 1702 1603 1518 1354 1233 1064 949 864 798 746 702 665
PGP-20 1-1/4”
11153
8021 6615 5769 5188 4756 4148 3731 3420 3076 2984 2820 2683 2412 2212 1930 1736 1591 1478 1387 1312 1247
PGP-32
2"
35370 25290 20784 18083 16231 14860 12928 11605 11624
9537 9244 8733 8298 7448 6819 5933 5325 4876 4526 4242 4006 3807