62
Bryan Steam, LLC
www.bryanboilers.com
Phone: 765-473-6651
783 N Chili Ave, Peru, IN 46970 [email protected]
Table 33: Equivalent Lengths Of Standard Pipe Fittings And Valves
Pipe Size
(
NPT
)
ID (
in
.)
Valves Fully Open
(
Screwed, Flanged, Welded
)
Schedule 40, Screwed Fittings
Gate
Globe
Angle
Swing
Check
90 deg. Elbow
(
threaded
)
45 deg. Elbow
(
threaded
)
90 deg. Tee,
Flow Through
Branch (
thread-
ed
)
1/2
.622
.36
17.3
8.65
4.32
1.55
.73
3.1
3/4
.824
.48
22.9
11.4
5.72
2.06
.96
4.12
1
1.049
.61
29.1
14.6
7.27
2.62
1.22
5.24
1-1/4
1.38
.81
38.3
19.1
9.58
3.45
1.61
6.9
1-1/2
1.61
.94
44.7
22.4
11.2
4.02
1.88
8.04
2
2.067
1.21
57.4
28.7
14.4
5.17
2.41
10.3
2-1/2
2.469
1.44
68.5
34.36
17.1
6.16
2.88
12.3
3
3.068
1.79
85.2
42.6
21.3
7.67
3.58
15.3
4
4.026
2.35
112
56
28
10.1
4.7
20.2
6
6.065
3.54
168
84.1
42.1
15.2
7.07
30.4
Equivalent lengths are for standard screwed fittings and for screwed, flanged, and welded valves relative to schedule 40 steel.
Table 34: Specific Gravity Correction Factors
Specific
Gravity
Correction Factor
Specific Gravity
Correction Factor
.5
1.1
1.2
.71
.55
1.04
1.3
.68
.6
1.0
1.4
.66
.65
.96
Propane
.7
.93
1.5
.63
.75
.9
1.6
.61
.8
.87
1.7
.59
.85
.84
1.8
.58
.9
.82
1.9
.56
1.0
.78
Butane
1.1
.74
2.0
.55