ICC Subscriptions
 
402.4 Sizing tables and equations. Where Tables 402.4(1) through 402.4(35) are used to size piping or tubing, the pipe length shall be determined in accordance with Section 402.4.1, 402.4.2 or 402.4.3.

Where Equations 4-1 and 4-2 are used to size piping or tubing, the pipe or tubing shall have smooth inside walls and the pipe length shall be determined in accordance with Section 402.4.1, 402.4.2 or 402.4.3.

1. Low-pressure gas equation [Less than 11/2 pounds per square inch (psi) (10.3 kPa)]:

 

(Equation 4-1)
2. High-pressure gas equation [11/2 psi (10.3 kPa) and above]:

 

(Equation 4-2)

where:

D
= Inside diameter of pipe, inches (mm).

Q
= Input rate appliance(s), cubic feet per hour at 60°F (16°C) and 30-inch mercury column.

P
1 = Upstream pressure, psia (P1 + 14.7).

P
2 = Downstream pressure, psia (P2 + 14.7).

L
= Equivalent length of pipe, feet.

ΔH = Pressure drop, inch water column (27.7 inch water column = 1 psi).

TABLE 402.4 Cr AND Y VALUES FOR NATURAL GAS AND UNDILUTED PROPANE AT STANDARD CONDITIONS
 

GAS 
EQUATION FACTORS 
Cr 
Y 
Natural gas
0.6094
0.9992
Undiluted propane
1.2462
0.9910


For SI:1 cubic foot = 0.028 m3, 1 foot = 305 mm, 1-inch water column = 0.2488 kPa, 1 pound per square inch = 6.895 kPa, 1 British thermal unit per hour = 0.293 W.


TABLE 402.4(1) SCHEDULE 40 METALLIC PIPE 



Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.3 in. w.c.
Specific Gravity 0.60


PIPE SIZE (inch) 
Nominal 
1/2
3/4
1
11/4
11/2
2
21/2
3
4
5
6
8
10
12
Actual ID 
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
5.047
6.065
7.981
10.020
11.938
Length (ft) 
Capacity in Cubic Feet of Gas Per Hour 
10
131
273
514
1,060
1,580
3,050
4,860
8,580
17,500
31,700
51,300
105,000
191,000
303,000
20
90
188
353
726
1,090
2,090
3,340
5,900
12,000
21,800
35,300
72,400
132,000
208,000
30
72
151
284
583
873
1,680
2,680
4,740
9,660
17,500
28,300
58,200
106,000
167,000
40
62
129
243
499
747
1,440
2,290
4,050
8,270
15,000
24,200
49,800
90,400
143,000
50
55
114
215
442
662
1,280
2,030
3,590
7,330
13,300
21,500
44,100
80,100
127,000
60
50
104
195
400
600
1,160
1,840
3,260
6,640
12,000
19,500
40,000
72,600
115,000
70
46
95
179
368
552
1,060
1,690
3,000
6,110
11,100
17,900
36,800
66,800
106,000
80
42
89
167
343
514
989
1,580
2,790
5,680
10,300
16,700
34,200
62,100
98,400
90
40
83
157
322
482
928
1,480
2,610
5,330
9,650
15,600
32,100
58,300
92,300
100
38
79
148
304
455
877
1,400
2,470
5,040
9,110
14,800
30,300
55,100
87,200
125
33
70
131
269
403
777
1,240
2,190
4,460
8,080
13,100
26,900
48,800
77,300
150
30
63
119
244
366
704
1,120
1,980
4,050
7,320
11,900
24,300
44,200
70,000
175
28
58
109
224
336
648
1,030
1,820
3,720
6,730
10,900
22,400
40,700
64,400
200
26
54
102
209
313
602
960
1,700
3,460
6,260
10,100
20,800
37,900
59,900
250
23
48
90
185
277
534
851
1,500
3,070
5,550
8,990
18,500
33,500
53,100
300
21
43
82
168
251
484
771
1,360
2,780
5,030
8,150
16,700
30,400
48,100
350
19
40
75
154
231
445
709
1,250
2,560
4,630
7,490
15,400
28,000
44,300
400
18
37
70
143
215
414
660
1,170
2,380
4,310
6,970
14,300
26,000
41,200
450
17
35
66
135
202
389
619
1,090
2,230
4,040
6,540
13,400
24,400
38,600
500
16
33
62
127
191
367
585
1,030
2,110
3,820
6,180
12,700
23,100
36,500
550
15
31
59
121
181
349
556
982
2,000
3,620
5,870
12,100
21,900
34,700
600
14
30
56
115
173
333
530
937
1,910
3,460
5,600
11,500
20,900
33,100
650
14
29
54
110
165
318
508
897
1,830
3,310
5,360
11,000
20,000
31,700
700
13
27
52
106
159
306
488
862
1,760
3,180
5,150
10,600
19,200
30,400
750
13
26
50
102
153
295
470
830
1,690
3,060
4,960
10,200
18,500
29,300
800
12
26
48
99
148
285
454
802
1,640
2,960
4,790
9,840
17,900
28,300
850
12
25
46
95
143
275
439
776
1,580
2,860
4,640
9,530
17,300
27,400
900
11
24
45
93
139
267
426
752
1,530
2,780
4,500
9,240
16,800
26,600
950
11
23
44
90
135
259
413
731
1,490
2,700
4,370
8,970
16,300
25,800
1,000
11
23
43
87
131
252
402
711
1,450
2,620
4,250
8,720
15,800
25,100
1,100
10
21
40
83
124
240
382
675
1,380
2,490
4,030
8,290
15,100
23,800
1,200
NA
20
39
79
119
229
364
644
1,310
2,380
3,850
7,910
14,400
22,700
1,300
NA
20
37
76
114
219
349
617
1,260
2,280
3,680
7,570
13,700
21,800
1,400
NA
19
35
73
109
210
335
592
1,210
2,190
3,540
7,270
13,200
20,900
1,500
NA
18
34
70
105
203
323
571
1,160
2,110
3,410
7,010
12,700
20,100
1,600
NA
18
33
68
102
196
312
551
1,120
2,030
3,290
6,770
12,300
19,500
1,700
NA
17
32
66
98
189
302
533
1,090
1,970
3,190
6,550
11,900
18,800
1,800
NA
16
31
64
95
184
293
517
1,050
1,910
3,090
6,350
11,500
18,300
1,900
NA
16
30
62
93
178
284
502
1,020
1,850
3,000
6,170
11,200
17,700
2,000
NA
16
29
60
90
173
276
488
1,000
1,800
2,920
6,000
10,900
17,200


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. NA means a flow of less than 10 cfh.

2. All table entries have been rounded to three significant digits.


TABLE 402.4(2) SCHEDULE 40 METALLIC PIPE 


Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60


PIPE SIZE (inch)
Nominal
1/2
3/4
1
11/4
11/2
2
21/2
3
4
5
6
8
10
12
Actual ID
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
5.047
6.065
7.981
10.020
11.938
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
172
360
678
1,390
2,090
4,020
6,400
11,300
23,100
41,800
67,600
139,000
252,000
399,000
20
118
247
466
957
1,430
2,760
4,400
7,780
15,900
28,700
46,500
95,500
173,000
275,000
30
95
199
374
768
1,150
2,220
3,530
6,250
12,700
23,000
37,300
76,700
139,000
220,000
40
81
170
320
657
985
1,900
3,020
5,350
10,900
19,700
31,900
65,600
119,000
189,000
50
72
151
284
583
873
1,680
2,680
4,740
9,660
17,500
28,300
58,200
106,000
167,000
60
65
137
257
528
791
1,520
2,430
4,290
8,760
15,800
25,600
52,700
95,700
152,000
70
60
126
237
486
728
1,400
2,230
3,950
8,050
14,600
23,600
48,500
88,100
139,000
80
56
117
220
452
677
1,300
2,080
3,670
7,490
13,600
22,000
45,100
81,900
130,000
90
52
110
207
424
635
1,220
1,950
3,450
7,030
12,700
20,600
42,300
76,900
122,000
100
50
104
195
400
600
1,160
1,840
3,260
6,640
12,000
19,500
40,000
72,600
115,000
125
44
92
173
355
532
1,020
1,630
2,890
5,890
10,600
17,200
35,400
64,300
102,000
150
40
83
157
322
482
928
1,480
2,610
5,330
9,650
15,600
32,100
58,300
92,300
175
37
77
144
296
443
854
1,360
2,410
4,910
8,880
14,400
29,500
53,600
84,900
200
34
71
134
275
412
794
1,270
2,240
4,560
8,260
13,400
27,500
49,900
79,000
250
30
63
119
244
366
704
1,120
1,980
4,050
7,320
11,900
24,300
44,200
70,000
300
27
57
108
221
331
638
1,020
1,800
3,670
6,630
10,700
22,100
40,100
63,400
350
25
53
99
203
305
587
935
1,650
3,370
6,100
9,880
20,300
36,900
58,400
400
23
49
92
189
283
546
870
1,540
3,140
5,680
9,190
18,900
34,300
54,300
450
22
46
86
177
266
512
816
1,440
2,940
5,330
8,620
17,700
32,200
50,900
500
21
43
82
168
251
484
771
1,360
2,780
5,030
8,150
16,700
30,400
48,100
550
20
41
78
159
239
459
732
1,290
2,640
4,780
7,740
15,900
28,900
45,700
600
19
39
74
152
228
438
699
1,240
2,520
4,560
7,380
15,200
27,500
43,600
650
18
38
71
145
218
420
669
1,180
2,410
4,360
7,070
14,500
26,400
41,800
700
17
36
68
140
209
403
643
1,140
2,320
4,190
6,790
14,000
25,300
40,100
750
17
35
66
135
202
389
619
1,090
2,230
4,040
6,540
13,400
24,400
38,600
800
16
34
63
130
195
375
598
1,060
2,160
3,900
6,320
13,000
23,600
37,300
850
16
33
61
126
189
363
579
1,020
2,090
3,780
6,110
12,600
22,800
36,100
900
15
32
59
122
183
352
561
992
2,020
3,660
5,930
12,200
22,100
35,000
950
15
31
58
118
178
342
545
963
1,960
3,550
5,760
11,800
21,500
34,000
1,000
14
30
56
115
173
333
530
937
1,910
3,460
5,600
11,500
20,900
33,100
1,100
14
28
53
109
164
316
503
890
1,810
3,280
5,320
10,900
19,800
31,400
1,200
13
27
51
104
156
301
480
849
1,730
3,130
5,070
10,400
18,900
30,000
1,300
12
26
49
100
150
289
460
813
1,660
3,000
4,860
9,980
18,100
28,700
1,400
12
25
47
96
144
277
442
781
1,590
2,880
4,670
9,590
17,400
27,600
1,500
11
24
45
93
139
267
426
752
1,530
2,780
4,500
9,240
16,800
26,600
1,600
11
23
44
89
134
258
411
727
1,480
2,680
4,340
8,920
16,200
25,600
1,700
11
22
42
86
130
250
398
703
1,430
2,590
4,200
8,630
15,700
24,800
1,800
10
22
41
84
126
242
386
682
1,390
2,520
4,070
8,370
15,200
24,100
1,900
10
21
40
81
122
235
375
662
1,350
2,440
3,960
8,130
14,800
23,400
2,000
NA
20
39
79
119
229
364
644
1,310
2,380
3,850
7,910
14,400
22,700


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. NA means a flow of less than 10 cfh.

2. All table entries have been rounded to three significant digits.


TABLE 402.4(3) SCHEDULE 40 METALLIC PIPE 


Gas  Natural 
Inlet Pressure  2.0 psi 
Pressure Drop  1.0 psi 
Specific Gravity  0.60 


PIPE SIZE (inch)
Nominal
1/2
3/4
1
11/4
11/2
2
21/2
3
4
Actual ID
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
1,510
3,040
5,560
11,400
17,100
32,900
52,500
92,800
189,000
20
1,070
2,150
3,930
8,070
12,100
23,300
37,100
65,600
134,000
30
869
1,760
3,210
6,590
9,880
19,000
30,300
53,600
109,000
40
753
1,520
2,780
5,710
8,550
16,500
26,300
46,400
94,700
50
673
1,360
2,490
5,110
7,650
14,700
23,500
41,500
84,700
60
615
1,240
2,270
4,660
6,980
13,500
21,400
37,900
77,300
70
569
1,150
2,100
4,320
6,470
12,500
19,900
35,100
71,600
80
532
1,080
1,970
4,040
6,050
11,700
18,600
32,800
67,000
90
502
1,010
1,850
3,810
5,700
11,000
17,500
30,900
63,100
100
462
934
1,710
3,510
5,260
10,100
16,100
28,500
58,200
125
414
836
1,530
3,140
4,700
9,060
14,400
25,500
52,100
150
372
751
1,370
2,820
4,220
8,130
13,000
22,900
46,700
175
344
695
1,270
2,601
3,910
7,530
12,000
21,200
43,300
200
318
642
1,170
2,410
3,610
6,960
11,100
19,600
40,000
250
279
583
1,040
2,140
3,210
6,180
9,850
17,400
35,500
300
253
528
945
1,940
2,910
5,600
8,920
15,800
32,200
350
232
486
869
1,790
2,670
5,150
8,210
14,500
29,600
400
216
452
809
1,660
2,490
4,790
7,640
13,500
27,500
450
203
424
759
1,560
2,330
4,500
7,170
12,700
25,800
500
192
401
717
1,470
2,210
4,250
6,770
12,000
24,400
550
182
381
681
1,400
2,090
4,030
6,430
11,400
23,200
600
174
363
650
1,330
2,000
3,850
6,130
10,800
22,100
650
166
348
622
1,280
1,910
3,680
5,870
10,400
21,200
700
160
334
598
1,230
1,840
3,540
5,640
9,970
20,300
750
154
322
576
1,180
1,770
3,410
5,440
9,610
19,600
800
149
311
556
1,140
1,710
3,290
5,250
9,280
18,900
850
144
301
538
1,100
1,650
3,190
5,080
8,980
18,300
900
139
292
522
1,070
1,600
3,090
4,930
8,710
17,800
950
135
283
507
1,040
1,560
3,000
4,780
8,460
17,200
1,000
132
275
493
1,010
1,520
2,920
4,650
8,220
16,800
1,100
125
262
468
960
1,440
2,770
4,420
7,810
15,900
1,200
119
250
446
917
1,370
2,640
4,220
7,450
15,200
1,300
114
239
427
878
1,320
2,530
4,040
7,140
14,600
1,400
110
230
411
843
1,260
2,430
3,880
6,860
14,000
1,500
106
221
396
812
1,220
2,340
3,740
6,600
13,500
1,600
102
214
382
784
1,180
2,260
3,610
6,380
13,000
1,700
99
207
370
759
1,140
2,190
3,490
6,170
12,600
1,800
96
200
358
736
1,100
2,120
3,390
5,980
12,200
1,900
93
195
348
715
1,070
2,060
3,290
5,810
11,900
2,000
91
189
339
695
1,040
2,010
3,200
5,650
11,500


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note:
All table entries have been rounded to three significant digits.


TABLE 402.4(4) SCHEDULE 40 METALLIC PIPE 


Gas Natural
Inlet Pressure 3.0 psi
Pressure Drop 2.0 psi
Specific Gravity 0.60


PIPE SIZE (inch) 
Nominal
1/2
3/4
1
11/4
11/2
2
21/2
3
4
Actual ID
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
2,350
4,920
9,270
19,000
28,500
54,900
87,500
155,000
316,000
20
1,620
3,380
6,370
13,100
19,600
37,700
60,100
106,000
217,000
30
1,300
2,720
5,110
10,500
15,700
30,300
48,300
85,400
174,000
40
1,110
2,320
4,380
8,990
13,500
25,900
41,300
73,100
149,000
50
985
2,060
3,880
7,970
11,900
23,000
36,600
64,800
132,000
60
892
1,870
3,520
7,220
10,800
20,800
33,200
58,700
120,000
70
821
1,720
3,230
6,640
9,950
19,200
30,500
54,000
110,000
80
764
1,600
3,010
6,180
9,260
17,800
28,400
50,200
102,000
90
717
1,500
2,820
5,800
8,680
16,700
26,700
47,100
96,100
100
677
1,420
2,670
5,470
8,200
15,800
25,200
44,500
90,800
125
600
1,250
2,360
4,850
7,270
14,000
22,300
39,500
80,500
150
544
1,140
2,140
4,400
6,590
12,700
20,200
35,700
72,900
175
500
1,050
1,970
4,040
6,060
11,700
18,600
32,900
67,100
200
465
973
1,830
3,760
5,640
10,900
17,300
30,600
62,400
250
412
862
1,620
3,330
5,000
9,620
15,300
27,100
55,300
300
374
781
1,470
3,020
4,530
8,720
13,900
24,600
50,100
350
344
719
1,350
2,780
4,170
8,020
12,800
22,600
46,100
400
320
669
1,260
2,590
3,870
7,460
11,900
21,000
42,900
450
300
627
1,180
2,430
3,640
7,000
11,200
19,700
40,200
500
283
593
1,120
2,290
3,430
6,610
10,500
18,600
38,000
550
269
563
1,060
2,180
3,260
6,280
10,000
17,700
36,100
600
257
537
1,010
2,080
3,110
5,990
9,550
16,900
34,400
650
246
514
969
1,990
2,980
5,740
9,150
16,200
33,000
700
236
494
931
1,910
2,860
5,510
8,790
15,500
31,700
750
228
476
897
1,840
2,760
5,310
8,470
15,000
30,500
800
220
460
866
1,780
2,660
5,130
8,180
14,500
29,500
850
213
445
838
1,720
2,580
4,960
7,910
14,000
28,500
900
206
431
812
1,670
2,500
4,810
7,670
13,600
27,700
950
200
419
789
1,620
2,430
4,670
7,450
13,200
26,900
1,000
195
407
767
1,580
2,360
4,550
7,240
12,800
26,100
1,100
185
387
729
1,500
2,240
4,320
6,890
12,200
24,800
1,200
177
369
695
1,430
2,140
4,120
6,570
11,600
23,700
1,300
169
353
666
1,370
2,050
3,940
6,290
11,100
22,700
1,400
162
340
640
1,310
1,970
3,790
6,040
10,700
21,800
1,500
156
327
616
1,270
1,900
3,650
5,820
10,300
21,000
1,600
151
316
595
1,220
1,830
3,530
5,620
10,000
20,300
1,700
146
306
576
1,180
1,770
3,410
5,440
9,610
19,600
1,800
142
296
558
1,150
1,720
3,310
5,270
9,320
19,000
1,900
138
288
542
1,110
1,670
3,210
5,120
9,050
18,400
2,000
134
280
527
1,080
1,620
3,120
4,980
8,800
18,000


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note:
All table entries have been rounded to three significant digits.


TABLE 402.4(5) SCHEDULE 40 METALLIC PIPE 


Gas  Natural 
Inlet Pressure  5.0 psi 
Pressure Drop  3.5 psi 
Specific Gravity  0.60 


PIPE SIZE (inch)
Nominal
1/2
3/4
1
11/4
11/2
2
21/2
3
4
Actual ID
0.622
0.824
1.049
1.380
1.610
2.067
2.469
3.068
4.026
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
3,190
6,430
11,800
24,200
36,200
69,700
111,000
196,000
401,000
20
2,250
4,550
8,320
17,100
25,600
49,300
78,600
139,000
283,000
30
1,840
3,720
6,790
14,000
20,900
40,300
64,200
113,000
231,000
40
1,590
3,220
5,880
12,100
18,100
34,900
55,600
98,200
200,000
50
1,430
2,880
5,260
10,800
16,200
31,200
49,700
87,900
179,000
60
1,300
2,630
4,800
9,860
14,800
28,500
45,400
80,200
164,000
70
1,200
2,430
4,450
9,130
13,700
26,400
42,000
74,300
151,000
80
1,150
2,330
4,260
8,540
12,800
24,700
39,300
69,500
142,000
90
1,060
2,150
3,920
8,050
12,100
23,200
37,000
65,500
134,000
100
979
1,980
3,620
7,430
11,100
21,400
34,200
60,400
123,000
125
876
1,770
3,240
6,640
9,950
19,200
30,600
54,000
110,000
150
786
1,590
2,910
5,960
8,940
17,200
27,400
48,500
98,900
175
728
1,470
2,690
5,520
8,270
15,900
25,400
44,900
91,600
200
673
1,360
2,490
5,100
7,650
14,700
23,500
41,500
84,700
250
558
1,170
2,200
4,510
6,760
13,000
20,800
36,700
74,900
300
506
1,060
1,990
4,090
6,130
11,800
18,800
33,300
67,800
350
465
973
1,830
3,760
5,640
10,900
17,300
30,600
62,400
400
433
905
1,710
3,500
5,250
10,100
16,100
28,500
58,100
450
406
849
1,600
3,290
4,920
9,480
15,100
26,700
54,500
500
384
802
1,510
3,100
4,650
8,950
14,300
25,200
51,500
550
364
762
1,440
2,950
4,420
8,500
13,600
24,000
48,900
600
348
727
1,370
2,810
4,210
8,110
12,900
22,900
46,600
650
333
696
1,310
2,690
4,030
7,770
12,400
21,900
44,600
700
320
669
1,260
2,590
3,880
7,460
11,900
21,000
42,900
750
308
644
1,210
2,490
3,730
7,190
11,500
20,300
41,300
800
298
622
1,170
2,410
3,610
6,940
11,100
19,600
39,900
850
288
602
1,130
2,330
3,490
6,720
10,700
18,900
38,600
900
279
584
1,100
2,260
3,380
6,520
10,400
18,400
37,400
950
271
567
1,070
2,190
3,290
6,330
10,100
17,800
36,400
1,000
264
551
1,040
2,130
3,200
6,150
9,810
17,300
35,400
1,100
250
524
987
2,030
3,030
5,840
9,320
16,500
33,600
1,200
239
500
941
1,930
2,900
5,580
8,890
15,700
32,000
1,300
229
478
901
1,850
2,770
5,340
8,510
15,000
30,700
1,400
220
460
866
1,780
2,660
5,130
8,180
14,500
29,500
1,500
212
443
834
1,710
2,570
4,940
7,880
13,900
28,400
1,600
205
428
806
1,650
2,480
4,770
7,610
13,400
27,400
1,700
198
414
780
1,600
2,400
4,620
7,360
13,000
26,500
1,800
192
401
756
1,550
2,330
4,480
7,140
12,600
25,700
1,900
186
390
734
1,510
2,260
4,350
6,930
12,300
25,000
2,000
181
379
714
1,470
2,200
4,230
6,740
11,900
24,300


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Note:
All table entries have been rounded to three significant digits.


TABLE 402.4(6) SEMIRIGID COPPER TUBING 


Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.3 in. w.c.
Specific Gravity 0.60


TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
20
42
85
148
210
448
806
1,270
2,650
20
14
29
58
102
144
308
554
873
1,820
30
11
23
47
82
116
247
445
701
1,460
40
10
20
40
70
99
211
381
600
1,250
50
NA
17
35
62
88
187
337
532
1,110
60
NA
16
32
56
79
170
306
482
1,000
70
NA
14
29
52
73
156
281
443
924
80
NA
13
27
48
68
145
262
413
859
90
NA
13
26
45
64
136
245
387
806
100
NA
12
24
43
60
129
232
366
761
125
NA
11
22
38
53
114
206
324
675
150
NA
10
20
34
48
103
186
294
612
175
NA
NA
18
31
45
95
171
270
563
200
NA
NA
17
29
41
89
159
251
523
250
NA
NA
15
26
37
78
141
223
464
300
NA
NA
13
23
33
71
128
202
420
350
NA
NA
12
22
31
65
118
186
387
400
NA
NA
11
20
28
61
110
173
360
450
NA
NA
11
19
27
57
103
162
338
500
NA
NA
10
18
25
54
97
153
319
550
NA
NA
NA
17
24
51
92
145
303
600
NA
NA
NA
16
23
49
88
139
289
650
NA
NA
NA
15
22
47
84
133
277
700
NA
NA
NA
15
21
45
81
128
266
750
NA
NA
NA
14
20
43
78
123
256
800
NA
NA
NA
14
20
42
75
119
247
850
NA
NA
NA
13
19
40
73
115
239
900
NA
NA
NA
13
18
39
71
111
232
950
NA
NA
NA
13
18
38
69
108
225
1,000
NA
NA
NA
12
17
37
67
105
219
1,100
NA
NA
NA
12
16
35
63
100
208
1,200
NA
NA
NA
11
16
34
60
95
199
1,300
NA
NA
NA
11
15
32
58
91
190
1,400
NA
NA
NA
10
14
31
56
88
183
1,500
NA
NA
NA
NA
14
30
54
84
176
1,600
NA
NA
NA
NA
13
29
52
82
170
1,700
NA
NA
NA
NA
13
28
50
79
164
1,800
NA
NA
NA
NA
13
27
49
77
159
1,900
NA
NA
NA
NA
12
26
47
74
155
2,000
NA
NA
NA
NA
12
25
46
72
151


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. NA means a flow of less than 10 cfh.

3. All table entries have been rounded to three significant digits.


TABLE 402.4(7) SEMIRIGID COPPER TUBING 


Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60


TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
27
55
111
195
276
590
1,060
1,680
3,490
20
18
38
77
134
190
406
730
1,150
2,400
30
15
30
61
107
152
326
586
925
1,930
40
13
26
53
92
131
279
502
791
1,650
50
11
23
47
82
116
247
445
701
1,460
60
10
21
42
74
105
224
403
635
1,320
70
NA
19
39
68
96
206
371
585
1,220
80
NA
18
36
63
90
192
345
544
1,130
90
NA
17
34
59
84
180
324
510
1,060
100
NA
16
32
56
79
170
306
482
1,000
125
NA
14
28
50
70
151
271
427
890
150
NA
13
26
45
64
136
245
387
806
175
NA
12
24
41
59
125
226
356
742
200
NA
11
22
39
55
117
210
331
690
250
NA
NA
20
34
48
103
186
294
612
300
NA
NA
18
31
44
94
169
266
554
350
NA
NA
16
28
40
86
155
245
510
400
NA
NA
15
26
38
80
144
228
474
450
NA
NA
14
25
35
75
135
214
445
500
NA
NA
13
23
33
71
128
202
420
550
NA
NA
13
22
32
68
122
192
399
600
NA
NA
12
21
30
64
116
183
381
650
NA
NA
12
20
29
62
111
175
365
700
NA
NA
11
20
28
59
107
168
350
750
NA
NA
11
19
27
57
103
162
338
800
NA
NA
10
18
26
55
99
156
326
850
NA
NA
10
18
25
53
96
151
315
900
NA
NA
NA
17
24
52
93
147
306
950
NA
NA
NA
17
24
50
90
143
297
1,000
NA
NA
NA
16
23
49
88
139
289
1,100
NA
NA
NA
15
22
46
84
132
274
1,200
NA
NA
NA
15
21
44
80
126
262
1,300
NA
NA
NA
14
20
42
76
120
251
1,400
NA
NA
NA
13
19
41
73
116
241
1,500
NA
NA
NA
13
18
39
71
111
232
1,600
NA
NA
NA
13
18
38
68
108
224
1,700
NA
NA
NA
12
17
37
66
104
217
1,800
NA
NA
NA
12
17
36
64
101
210
1,900
NA
NA
NA
11
16
35
62
98
204
2,000
NA
NA
NA
11
16
34
60
95
199


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. NA means a flow of less than 10 cfh.

3. All table entries have been rounded to three significant digits.


TABLE 402.4(8) SEMIRIGID COPPER TUBING 


Gas  Natural 
Inlet Pressure  Less than 2 psi 
Pressure Drop  1.0 in. w.c.
Specific Gravity  0.60 


INTENDED USE: SIZING BETWEEN HOUSE LINE REGULATOR AND THE APPLIANCE
TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
39
80
162
283
402
859
1,550
2,440
5,080
20
27
55
111
195
276
590
1,060
1,680
3,490
30
21
44
89
156
222
474
853
1,350
2,800
40
18
38
77
134
190
406
730
1,150
2,400
50
16
33
68
119
168
359
647
1,020
2,130
60
15
30
61
107
152
326
586
925
1,930
70
13
28
57
99
140
300
539
851
1,770
80
13
26
53
92
131
279
502
791
1,650
90
12
24
49
86
122
262
471
742
1,550
100
11
23
47
82
116
247
445
701
1,460
125
NA
20
41
72
103
219
394
622
1,290
150
NA
18
37
65
93
198
357
563
1,170
175
NA
17
34
60
85
183
329
518
1,080
200
NA
16
32
56
79
170
306
482
1,000
250
NA
14
28
50
70
151
271
427
890
300
NA
13
26
45
64
136
245
387
806
350
NA
12
24
41
59
125
226
356
742
400
NA
11
22
39
55
117
210
331
690
450
NA
10
21
36
51
110
197
311
647
500
NA
NA
20
34
48
103
186
294
612
550
NA
NA
19
32
46
98
177
279
581
600
NA
NA
18
31
44
94
169
266
554
650
NA
NA
17
30
42
90
162
255
531
700
NA
NA
16
28
40
86
155
245
510
750
NA
NA
16
27
39
83
150
236
491
800
NA
NA
15
26
38
80
144
228
474
850
NA
NA
15
26
36
78
140
220
459
900
NA
NA
14
25
35
75
135
214
445
950
NA
NA
14
24
34
73
132
207
432
1,000
NA
NA
13
23
33
71
128
202
420
1,100
NA
NA
13
22
32
68
122
192
399
1,200
NA
NA
12
21
30
64
116
183
381
1,300
NA
NA
12
20
29
62
111
175
365
1,400
NA
NA
11
20
28
59
107
168
350
1,500
NA
NA
11
19
27
57
103
162
338
1,600
NA
NA
10
18
26
55
99
156
326
1,700
NA
NA
10
18
25
53
96
151
315
1,800
NA
NA
NA
17
24
52
93
147
306
1,900
NA
NA
NA
17
24
50
90
143
297
2,000
NA
NA
NA
16
23
49
88
139
289


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. NA means a flow of less than 10 cfh.

3. All table entries have been rounded to three significant digits.


TABLE 402.4(9) SEMIRIGID COPPER TUBING 


Gas  Natural 
Inlet Pressure  Less than 2.0 psi 
Pressure Drop  17.0 in w.c.
Specific Gravity  0.60 


TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
190
391
796
1,390
1,970
4,220
7,590
12,000
24,900
20
130
269
547
956
1,360
2,900
5,220
8,230
17,100
30
105
216
439
768
1,090
2,330
4,190
6,610
13,800
40
90
185
376
657
932
1,990
3,590
5,650
11,800
50
79
164
333
582
826
1,770
3,180
5,010
10,400
60
72
148
302
528
749
1,600
2,880
4,540
9,460
70
66
137
278
486
689
1,470
2,650
4,180
8,700
80
62
127
258
452
641
1,370
2,460
3,890
8,090
90
58
119
243
424
601
1,280
2,310
3,650
7,590
100
55
113
229
400
568
1,210
2,180
3,440
7,170
125
48
100
203
355
503
1,080
1,940
3,050
6,360
150
44
90
184
321
456
974
1,750
2,770
5,760
175
40
83
169
296
420
896
1,610
2,540
5,300
200
38
77
157
275
390
834
1,500
2,370
4,930
250
33
69
140
244
346
739
1,330
2,100
4,370
300
30
62
126
221
313
670
1,210
1,900
3,960
350
28
57
116
203
288
616
1,110
1,750
3,640
400
26
53
108
189
268
573
1,030
1,630
3,390
450
24
50
102
177
252
538
968
1,530
3,180
500
23
47
96
168
238
508
914
1,440
3,000
550
22
45
91
159
226
482
868
1,370
2,850
600
21
43
87
152
215
460
829
1,310
2,720
650
20
41
83
145
206
441
793
1,250
2,610
700
19
39
80
140
198
423
762
1,200
2,500
750
18
38
77
135
191
408
734
1,160
2,410
800
18
37
74
130
184
394
709
1,120
2,330
850
17
35
72
126
178
381
686
1,080
2,250
900
17
34
70
122
173
370
665
1,050
2,180
950
16
33
68
118
168
359
646
1,020
2,120
1,000
16
32
66
115
163
349
628
991
2,060
1,100
15
31
63
109
155
332
597
941
1,960
1,200
14
29
60
104
148
316
569
898
1,870
1,300
14
28
57
100
142
303
545
860
1,790
1,400
13
27
55
96
136
291
524
826
1,720
1,500
13
26
53
93
131
280
505
796
1,660
1,600
12
25
51
89
127
271
487
768
1,600
1,700
12
24
49
86
123
262
472
744
1,550
1,800
11
24
48
84
119
254
457
721
1,500
1,900
11
23
47
81
115
247
444
700
1,460
2,000
11
22
45
79
112
240
432
681
1,420


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. All table entries have been rounded to three significant digits.


TABLE 402.4(10) SEMIRIGID COPPER TUBING 


Gas  Natural 
Inlet Pressure  2.0 psi 
Pressure Drop  1.0 psi 
Specific Gravity  0.60 


TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
245
506
1,030
1,800
2,550
5,450
9,820
15,500
32,200
20
169
348
708
1,240
1,760
3,750
6,750
10,600
22,200
30
135
279
568
993
1,410
3,010
5,420
8,550
17,800
40
116
239
486
850
1,210
2,580
4,640
7,310
15,200
50
103
212
431
754
1,070
2,280
4,110
6,480
13,500
60
93
192
391
683
969
2,070
3,730
5,870
12,200
70
86
177
359
628
891
1,900
3,430
5,400
11,300
80
80
164
334
584
829
1,770
3,190
5,030
10,500
90
75
154
314
548
778
1,660
2,990
4,720
9,820
100
71
146
296
518
735
1,570
2,830
4,450
9,280
125
63
129
263
459
651
1,390
2,500
3,950
8,220
150
57
117
238
416
590
1,260
2,270
3,580
7,450
175
52
108
219
383
543
1,160
2,090
3,290
6,850
200
49
100
204
356
505
1,080
1,940
3,060
6,380
250
43
89
181
315
448
956
1,720
2,710
5,650
300
39
80
164
286
406
866
1,560
2,460
5,120
350
36
74
150
263
373
797
1,430
2,260
4,710
400
33
69
140
245
347
741
1,330
2,100
4,380
450
31
65
131
230
326
696
1,250
1,970
4,110
500
30
61
124
217
308
657
1,180
1,870
3,880
550
28
58
118
206
292
624
1,120
1,770
3,690
600
27
55
112
196
279
595
1,070
1,690
3,520
650
26
53
108
188
267
570
1,030
1,620
3,370
700
25
51
103
181
256
548
986
1,550
3,240
750
24
49
100
174
247
528
950
1,500
3,120
800
23
47
96
168
239
510
917
1,450
3,010
850
22
46
93
163
231
493
888
1,400
2,920
900
22
44
90
158
224
478
861
1,360
2,830
950
21
43
88
153
217
464
836
1,320
2,740
1,000
20
42
85
149
211
452
813
1,280
2,670
1,100
19
40
81
142
201
429
772
1,220
2,540
1,200
18
38
77
135
192
409
737
1,160
2,420
1,300
18
36
74
129
183
392
705
1,110
2,320
1,400
17
35
71
124
176
376
678
1,070
2,230
1,500
16
34
68
120
170
363
653
1,030
2,140
1,600
16
33
66
116
164
350
630
994
2,070
1,700
15
31
64
112
159
339
610
962
2,000
1,800
15
30
62
108
154
329
592
933
1,940
1,900
14
30
60
105
149
319
575
906
1,890
2,000
14
29
59
102
145
310
559
881
1,830


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. All table entries have been rounded to three significant digits.


TABLE 402.4(11) SEMIRIGID COPPER TUBING 


Gas  Natural 
Inlet Pressure  2.0 psi 
Pressure Drop  1.5 psi 
Specific Gravity  0.60 


INTENDED USE
Pipe sizing between point of delivery and the house line regulator.
Total load supplied by a single house line regulator not exceeding 150 cubic feet per hour.
TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
303
625
1,270
2,220
3,150
6,740
12,100
19,100
39,800
20
208
430
874
1,530
2,170
4,630
8,330
13,100
27,400
30
167
345
702
1,230
1,740
3,720
6,690
10,600
22,000
40
143
295
601
1,050
1,490
3,180
5,730
9,030
18,800
50
127
262
532
931
1,320
2,820
5,080
8,000
16,700
60
115
237
482
843
1,200
2,560
4,600
7,250
15,100
70
106
218
444
776
1,100
2,350
4,230
6,670
13,900
80
98
203
413
722
1,020
2,190
3,940
6,210
12,900
90
92
190
387
677
961
2,050
3,690
5,820
12,100
100
87
180
366
640
907
1,940
3,490
5,500
11,500
125
77
159
324
567
804
1,720
3,090
4,880
10,200
150
70
144
294
514
729
1,560
2,800
4,420
9,200
175
64
133
270
472
670
1,430
2,580
4,060
8,460
200
60
124
252
440
624
1,330
2,400
3,780
7,870
250
53
110
223
390
553
1,180
2,130
3,350
6,980
300
48
99
202
353
501
1,070
1,930
3,040
6,320
350
44
91
186
325
461
984
1,770
2,790
5,820
400
41
85
173
302
429
916
1,650
2,600
5,410
450
39
80
162
283
402
859
1,550
2,440
5,080
500
36
75
153
268
380
811
1,460
2,300
4,800
550
35
72
146
254
361
771
1,390
2,190
4,560
600
33
68
139
243
344
735
1,320
2,090
4,350
650
32
65
133
232
330
704
1,270
2,000
4,160
700
30
63
128
223
317
676
1,220
1,920
4,000
750
29
60
123
215
305
652
1,170
1,850
3,850
800
28
58
119
208
295
629
1,130
1,790
3,720
850
27
57
115
201
285
609
1,100
1,730
3,600
900
27
55
111
195
276
590
1,060
1,680
3,490
950
26
53
108
189
268
573
1,030
1,630
3,390
1,000
25
52
105
184
261
558
1,000
1,580
3,300
1,100
24
49
100
175
248
530
954
1,500
3,130
1,200
23
47
95
167
237
505
910
1,430
2,990
1,300
22
45
91
160
227
484
871
1,370
2,860
1,400
21
43
88
153
218
465
837
1,320
2,750
1,500
20
42
85
148
210
448
806
1,270
2,650
1,600
19
40
82
143
202
432
779
1,230
2,560
1,700
19
39
79
138
196
419
753
1,190
2,470
1,800
18
38
77
134
190
406
731
1,150
2,400
1,900
18
37
74
130
184
394
709
1,120
2,330
2,000
17
36
72
126
179
383
690
1,090
2,270

 

For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. Where this table is used to size the tubing upstream of a line pressure regulator, the pipe or tubing downstream of the line pressure regulator shall be sized using a pressure drop not greater than 1 inch w.c.

3. All table entries have been rounded to three significant digits.


TABLE 402.4(12) SEMIRIGID COPPER TUBING 


Gas Natural
Inlet Pressure 5.0 psi
Pressure Drop 3.5 psi
Specific Gravity 0.60


TUBE SIZE (inch)
Nominal
K & L
1/4
3/8
1/2
5/8
3/4
1
11/4
11/2
2
ACR
3/8
1/2
5/8
3/4
7/8
11/8
13/8
-
-
Outside
0.375
0.500
0.625
0.750
0.875
1.125
1.375
1.625
2.125
Inside
0.305
0.402
0.527
0.652
0.745
0.995
1.245
1.481
1.959
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
10
511
1,050
2,140
3,750
5,320
11,400
20,400
32,200
67,100
20
351
724
1,470
2,580
3,650
7,800
14,000
22,200
46,100
30
282
582
1,180
2,070
2,930
6,270
11,300
17,800
37,000
40
241
498
1,010
1,770
2,510
5,360
9,660
15,200
31,700
50
214
441
898
1,570
2,230
4,750
8,560
13,500
28,100
60
194
400
813
1,420
2,020
4,310
7,750
12,200
25,500
70
178
368
748
1,310
1,860
3,960
7,130
11,200
23,400
80
166
342
696
1,220
1,730
3,690
6,640
10,500
21,800
90
156
321
653
1,140
1,620
3,460
6,230
9,820
20,400
100
147
303
617
1,080
1,530
3,270
5,880
9,270
19,300
125
130
269
547
955
1,360
2,900
5,210
8,220
17,100
150
118
243
495
866
1,230
2,620
4,720
7,450
15,500
175
109
224
456
796
1,130
2,410
4,350
6,850
14,300
200
101
208
424
741
1,050
2,250
4,040
6,370
13,300
250
90
185
376
657
932
1,990
3,580
5,650
11,800
300
81
167
340
595
844
1,800
3,250
5,120
10,700
350
75
154
313
547
777
1,660
2,990
4,710
9,810
400
69
143
291
509
722
1,540
2,780
4,380
9,120
450
65
134
273
478
678
1,450
2,610
4,110
8,560
500
62
127
258
451
640
1,370
2,460
3,880
8,090
550
58
121
245
429
608
1,300
2,340
3,690
7,680
600
56
115
234
409
580
1,240
2,230
3,520
7,330
650
53
110
224
392
556
1,190
2,140
3,370
7,020
700
51
106
215
376
534
1,140
2,050
3,240
6,740
750
49
102
207
362
514
1,100
1,980
3,120
6,490
800
48
98
200
350
497
1,060
1,910
3,010
6,270
850
46
95
194
339
481
1,030
1,850
2,910
6,070
900
45
92
188
328
466
1,000
1,790
2,820
5,880
950
43
90
182
319
452
967
1,740
2,740
5,710
1,000
42
87
177
310
440
940
1,690
2,670
5,560
1,100
40
83
169
295
418
893
1,610
2,530
5,280
1,200
38
79
161
281
399
852
1,530
2,420
5,040
1,300
37
76
154
269
382
816
1,470
2,320
4,820
1,400
35
73
148
259
367
784
1,410
2,220
4,630
1,500
34
70
143
249
353
755
1,360
2,140
4,460
1,600
33
68
138
241
341
729
1,310
2,070
4,310
1,700
32
65
133
233
330
705
1,270
2,000
4,170
1,800
31
63
129
226
320
684
1,230
1,940
4,040
1,900
30
62
125
219
311
664
1,200
1,890
3,930
2,000
29
60
122
213
302
646
1,160
1,830
3,820


For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm, 1 pound per square inch = 6.895 kPa, 1-inch water column = 0.2488 kPa,

1 British thermal unit per hour = 0.2931 W, 1 cubic foot per hour = 0.0283 m3/h, 1 degree = 0.01745 rad.

Notes:


1. Table capacities are based on Type K copper tubing inside diameter (shown), which has the smallest inside diameter of the copper tubing products.

2. All table entries have been rounded to three significant digits.


TABLE 402.4(13) CORRUGATED STAINLESS STEEL TUBING (CSST) 


Gas Natural
Inlet Pressure Less than 2 psi
Pressure Drop 0.5 in. w.c.
Specific Gravity 0.60


TUBE SIZE (EHD) 
Flow Designation
13
15
18
19
23
25
30
31
37
39
46
48
60
62
Length (ft)
Capacity in Cubic Feet of Gas Per Hour
5
46
63
115
134
225
270
471
546
895
1,037
1,790
2,070
3,660
4,140
10
32
44
82
95
161
192
330
383
639
746
1,260
1,470
2,600
2,930
15
25
35
66
77
132
157
267
310
524
615
1,030
1,200
2,140
2,400
20
22
31
58
67
116
137
231
269
456
536
888
1,050
1,850
2,080
25
19
27
52
60
104
122
206
240
409
482
793
936
1,660
1,860
30
18
25
47
55
96
112
188
218
374
442
723
856
1,520
1,700
40
15
21
41
47
83
97
162
188
325
386
625
742
1,320
1,470
50
13
19
37
42
75
87
144
168
292
347
559
665
1,180
1,320
60
12
17
34
38
68
80
131
153
267
318
509
608
1,080
1,200
70
11
16
31
36
63
74
121
141
248
295
471
563
1,000
1,110
80
10
15
29
33