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Table 12: Friction loss for valves and fittings – equivalent length of straight pipe
[ft]
90° normal elbow
2.7
45° elbow
1.3
90° long radius elbow
1.7
Close return bend
6.0
Globe valve
27.0
Angle valve
15.0
Gate valve
0.6
Check valve (swing)
7.0
Check valve (spring)
8.0
BERNT LORENTZ GmbH & Co. KG Kroegerskoppel 7, 24558 Henstedt-Ulzburg, Germany, Tel. +49 (0) 4193 7548 - 0, Fax - 29, www.lorentz.de
All specifi cations and information are given with good intent, errors are possible and products may be subject to change without notice. Pictures may
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1"
1 1/4"
[m]
[ft]
[m]
0.8
3.5
1.1
0.4
1.7
0.5
0.5
2.3
0.7
1.8
8.3
2.5
8.2
36.0
11.0
4.6
18.0
5.5
0.2
0.8
0.2
2.1
9
2.7
11.0
2.4
12
3.7
14.0
1 1/2"
2"
[ft]
[m]
[ft]
[m]
4.3
1.3
5.5
1.7
2.0
0.6
2.5
0.8
2.7
0.8
3.5
1.1
10.0
3.0
13.0
4.0
43.0
13.1
55.0
16.8
22.0
6.7
28.0
8.5
1.0
0.3
1.2
0.4
3.4
13.0
4.0
4.3
19.0
5.8
31
2 1/2"
3"
[ft]
[m]
[ft]
[m]
6.5
2.0
8.0
2.4
3.0
0.9
3.8
1.2
4.2
1.3
5.2
1.6
15.0
4.6
18.0
5.5
67.0
20.4
82.0
25.0
33.0
10.1
42.0
12.8
1.4
0.4
1.7
0.5
16.0
4.9
20.0
6.1
23.0
7.0
32.0
9.8
Sun. Water.
4"
[ft]
[m]
10.1
3.1
5.4
1.6
7.0
2.1
24.0
7.3
110.0
33.5
58.0
17.7
2.3
0.7
26.0
7.9
43.0
13.1
Life.
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