Burnham ALP150 User Manual
Page 47
Table 1B: Maximum Capacity of Schedule 0 Black Pipe in CFH* (LP gas) For gas Pressures
of 0.5 psig or Less
inlet Pressure 11.0 inch W.C.; 0. inch W.C. Pressure Drop
Nominal Pipe
Size, In.
Inside
Diameter, In.
Length of Pipe, Ft.
10
20
30
40
50
60
70
80
90
100
½
0.622
88
60
48
41
37
33
31
29
27
25
¾
0.824
184
126
101
87
77
70
64
60
56
53
1
1.049
346
238
191
163
145
131
121
112
105
100
1¼
1.380
710
488
392
336
297
269
248
231
216
204
1½
1.610
1064
732
588
503
446
404
371
346
324
306
2
2.067
2050
1409
1131
968
858
778
715
666
624
590
2½
2.469
3267
2246
1803
1543
1368
1239
1140
1061
995
940
3
3.068
5776
3970
3188
2729
2418
2191
2016
1875
1760
1662
inlet Pressure 11.0 inch W.C.; 0.5 inch W.C. Pressure Drop
Nominal Pipe
Size, In.
Inside
Diameter, In.
Length of Pipe, Ft.
10
20
30
40
50
60
70
80
90
100
½
0.622
116
80
64
55
48
44
40
38
35
33
¾
0.824
242
166
134
114
101
92
85
79
74
70
1
1.049
456
314
252
215
191
173
159
148
139
131
1¼
1.380
937
644
517
442
392
355
327
304
285
269
1½
1.610
1403
964
775
663
588
532
490
456
427
404
2
2.067
2703
1858
1492
1277
1131
1025
943
877
823
778
2½
2.469
4308
2961
2377
2035
1803
1634
1503
1399
1312
1239
3
3.068
7615
5234
4203
3597
3188
2889
2658
2472
2320
2191
* 1 CFH of LP Gas is approximately equal to 2.5 MBH; contact your gas supplier for the actual heating value
of your gas.
Table 15: Equivalent Lengths of Standard Pipe Fittings & Valves
Nominal
Pipe Size,
Inc.
Inside
Diameter,
In.
Valves (Screwed) - Fully Open
Screwed Fittings
Gate
Globe
Angle
Swing
Check
45°
Elbow
90°
Elbow
180 Close
Return
Bend
90 Tee
Flow Thru
Run
90 Tee,
Flow Thru
Branch
½
0.622
0.4
17.3
8.7
4.3
0.7
1.6
3.5
1.6
3.1
¾
0.824
0.5
22.9
11.4
5.7
1.0
2.1
4.6
2.1
4.1
1
1.049
0.6
29.1
14.6
7.3
1.2
2.6
5.8
2.6
5.2
1¼
1.38
0.8
38.3
19.1
9.6
1.6
3.5
7.7
3.5
6.9
1½
1.61
0.9
44.7
22.4
11.2
1.9
4.0
9.0
4.0
8.0
2
2.067
1.2
57.4
28.7
14.4
2.4
5.2
11.5
5.2
10.3
2½
2.469
1.4
68.5
34.3
17.1
2.9
6.2
13.7
6.2
12.3
3
3.068
1.8
85.2
42.6
21.3
3.6
7.7
17.1
7.7
15.3