Equivalent Lengths Of Standard Pipe Fittings & Valves - Burnham ALP105 Installation, Operating And Service Instructions

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