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GAS PIPING INSTRUCTIONS (continued)
Pipe Sizing Chart for Liquid Propane (11" w.c.) with Straight Schedule 40 Metal Pipe
The following chart is based on 11" w.c. inlet pressure and a pressure drop of 0.5" w.c.
Pipe Size
1/2"
Actual ID
0.622
Pipe Length
(ft)
10
291,000
20
200,000
30
160,000
40
137,000
50
122,000
60
110,000
80
94,000
100
84,000
125
74,000
150
67,000
200
58,000
250
51,000
300
46,000
350
42,000
400
40,000
Maximum Capacity of Pipe Size in Btu per Hour
3/4"
1"
0.824
1.049
Maximum Capacity in Btu/hr
608,000
1,145,000
418,000
787,000
336,000
632,000
287,000
541,000
255,000
480,000
231,000
434,000
197,000
372,000
175,000
330,000
155,000
292,000
140,000
265,000
120,000
227,000
107,000
201,000
97,000
182,000
89,000
167,000
83,000
136,000
13 of 36
1 1/14"
1 1/2"
1.38
1.61
2,352,000
3,523,000
1,616,000
2,422,000
1,298,000
1,945,000
1,111,000
1,664,000
984,000
1,475,000
892,000
1,337,000
763,000
1,144,000
677,000
1,014,000
600,000
899,000
543,000
814,000
465,000
697,000
412,000
618,000
373,000
560,000
344,000
515,000
320,000
479,000
Copyright 2019 by Southern Pride Distributing, LLC Revision 5
2"
3"
2.067
3.068
6,786,000
19,119,000
4,664,000
13,141,000
3,745,000
10,552,000
3,205,000
9,031,000
2,841,000
8,004,000
2,574,000
7,253,000
2,203,000
6,207,000
1,952,000
5,501,000
1,730,000
4,876,000
1,568,000
4,418,000
1,342,000
3,781,000
1,189,000
3,351,000
1,078,000
3,036,000
991,000
2,793,000
922,000
2,599,000
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