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FW
TABLE 402.4(33)
CORRUGATED STAINLESS STEEL TUBING (CSST)
Gas Undiluted Propane
Inlet Pressure 2.0 psi
Pressure Drop 1.0 psi
Specific Gravity 1.50
INTENDED USE: SIZING BETWE N SERVICE AND THE LINE PRESSURE REGULATOR
,TYEB S E (EHD) I
31
Flow
Designation
13
7g
18
19
23
30
1 31
37
39
46
48
g0
62
Length (ff)
Capacity In Thousands of Btu per Hour
10
426
558
927
1,110
1,740
2,170
4,100
4,720
7,130
7,958
15,200
16,800
29,400
34,200
25
262
347
591
701
1,120
1,380
2,560
2,950
4,560
5,147
9,550
10,700
18,800
21,700
30
238
316
540
640
1,030
1,270
2,330
2,690
4,180
4,719
8,710
9,790
17,200
19,800
40
203
271
469
554
896
1,100
2,010
2,320
3,630
4,116
7,530
8,500
14,900
17,200
50
181
243
420
496
806 1
986
1,790
2,070
3,260
3,702
6,730
7,610
13,400
15,400
75
147
196
344
406
663
809
1,460
1,690
2,680
3,053
5,480
6,230
11,000
12,600
80
140
189
333
393
643
768
1,410
1,630
2,590
2,961
5,300
6,040
10,600
12,200
100
124
169
298
350
578
703
1,260
1,450
2,330
2,662
4,740
5,410
9,530
10,900
150
101
137
245
287
477
575
1,020
1,180
1,910
2,195
3,860
4,430
7,810
8,890
200
86
118
213
248
415
501
880
1,020
1,660
1,915
3,340
3,840
6,780
7,710
250
77
105
191
222
373
448
785
910
1,490
1,722
2,980
3,440
6,080
6,900
300
69
96
173
203
343
411
716
829
1,360
1,578
2,720
3,150
5,560
6,300
400
60
82
151
175
298
355
616
716
1,160
1,376
2,350
2,730
4,830
5,460
500
53
72
135
158
268
319
550
638
1,030
1,237
2,100
2,450
4,330
4,880
-• �•• - Y.o rruu, 1 inrwru pnr sejuarc mcn = o.ar:)xra, i-mcn water column = 0.2488 kPa,
1 British thermal unit per hour = 0.293 1 W, 1 cubic foot per hour = 0.0283 m3k i degree = 0.01745 rad.
Notes:
1. Table does not include effect of pressure drop across the line regulator. Where regulator loss exceeds V. psi (based on 13 in, W.C. outlet pressure), DO NOT
USE THIS TABLE. Consult with the regulator manufacturer for pressure drops and capacity factors. Pressure drops across a regulator may vary with flow
rate.
2. CAUTION: Capacities shown in the table might exceed maximum capacity for a selected regulator. Consult with the regulator or tubing manufacturer for
guidance.
3. Table includes losses for four 90-degree bends and two end fittings. Tubing runs with larger numbers of bends or fittings shall be increased by an equivalent
length of tubing to the following equation: L = 1.3n where L is additional length (feet) of tubing and n is the number of additional fittings or bends.
4. EHD-Equivalent Hydraulic Diameter, which is a measure of the relative hydraulic efficiency between different tubing sizes. The greater the value of EHD,
the greater the gas capacity of the tubing.
5. All table entries have been rounded to three significant digits.
58 FLORIDA BUILDING CODE - FUEL GAS, tith EDITION (2017)
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