Manual for the Design of Pipe Systems and Pumps - GEA ...

8.3 Pressure drops of valves in metre equivalent pipe length
Valve DN Inch OD
25 40 50 65 80 100 125 1 11/2 2 21/2 3 4
Type D
I to II 1.13 1.3 1.49 2.91 3.64 2.59 5.08 0.85 0.98 1.25 1.58 1.82
III to IV 0.86 1.23 1.32 2.85 3.55 2.8 4.96 0.76 1.02 1.12 1.52 1.82
III to I 3.76 8.83 18.41 22.51 20.79 18.58 24.05 2.92 6.18 9.69 15.18 29
I to III
Type R
4.09 5.69 10.48 10.5 23.41 18.29 23.65 3.38 4.06 10.31 7 13.49
I to II 0.97 1.3 1.49 2.91 3.73 2.59 5.08 0.98 1.25 1.58 1.82
III to IV 0.95 1.59 1.86 4.39 4.79 3.62 6.5 1.13 1.46 2.48 2.8
III to I 3.33 10.37 17.03 47.28 24.91 18.44 28.15 16.49 11.49 11.82 14.52
I to III
Type RN
3.4 10.11 18.85 21.59 25.48 17.24 28.1 19.1 11.56 10.95 15.21
I to II 3.15 3.41 5.35 4.33 9.5 2.1 2.6 4.27
III to IV 1.82 3.16 4.68 3.62 6.5 1.46 2.48 2.8
III to I 15.83 15.05 25.07 18.53 26.65 11.93 10.69 14.54
I to III
Type B
17.37 16.04 28.87 18.4 24.69 12.25 9.72 16.03
I to II 2.91 3.64 2.59 5.08 1.58 1.82
III to IV 3.64 4.76 3.76 6.25 1.92 2.71
III to I 16.38 25.19 20.89 27.29 7.64 14.93
I to III
Type BN
17.43 27.28 19.54 27.17 7.33 15.49
I to II 3.41 5.35 4.33 9.5 2.6 4.27
III to IV 3.12 4.71 3.93 8.82 1.92 2.71
III to I 16.05 25.43 20.12 28.15 7.88 14.93
I to III
Type N
17 28.17 20.01 28.1 5.79 15.76
I to II 0.91 1.62 2.19 3.34 2.21 2.72 0.77 1.50 1.44 1.88 2.45
III to IV 0.67 0.85 1.64 2.58 1.48 2.14 0.53 0.91 0.78 1.2 1.33
III to I 5.44 10.96 22.67 28.56 36.8 25.93 3.47 5.63 19.25 19.83 29.84
I to III
Type NL
2.03 3.86 6.36 10.15 16.06 19.27 1.59 2.76 4.87 5.95 11.84
I to III 1.77 3.3 3.76 7.03 10.12 11.43 11.61 11.61 2.23 3.2 5.18 6.95
III to I
Type W
1.6 2.73 4.42 6.16 11.08 12.81 11.55 11.55 1.67 3.82 2.84 6.44
I to II 1.05 1.48 1.57 2.36 4.14 3.16 4.54 4.54 1.73 1.88 2.09 2.34
I to III 1.23 9.36 16.02 23.68 20.68 41.49 21.37 21.37 6.09 21.58 19.61 35.24
III to I 1.19 3.59 7.05 9.37 23.7 25.06 19.67 19.67 3.77 8.56 8.43 18.93
III to V 2.58 3.27 6.89 10.11 24.37 24.68 20.09 20.09 3.29 8.91 8.83 21.75
V to III
Type X
6.53 9.39 20.31 26.32 39.06 30.47 30.50 30.50 8.35 27.01 20.68 29.51
I to II 0.85 1.73 1.29 1.86 3.53 2.28 4.37 4.37 0.84 1.12 1.48 2.1
I to III 2.77 3.11 8.71 7.41 17.95 19.33 18.50 18.50 1.99 5.44 5.07 12.85
III to I 2.95 3.86 9.3 13.08 34.84 29.64 35.24 35.24 3.02 6.28 8.57 18.66
III to V 2.93 4.65 9.57 11.31 23.29 28.94 35.79 35.79 2.99 6.31 8.8 16.44
V to III 2.61 3.05 8.12 18.49 20.42 19.46 19.46 1.94 4.88 5.12 13.4
V to VI
Type Y
0.73 1.49 1.01 2.27 3.06 4.38 2.58 2.58 0.76 0.88 1.27 1.31
I to II 0.78 1.18 1.25 1.81 3.52 2.21 4.17 4.17 0.86 1.19 1.5 2.12
I to III 3.73 12.09 10.49 7.41 35.77 59.77 23.11 23.11 7.81 7.98 8.67 21.44
III to I 4 10.23 10.8 13.08 51.81 57.02 37.48 37.48 8.11 8.15 11.97 29.14
III to V 3.59 5.39 6.22 11.31 17.42 35.96 20.35 20.35 2.83 6.51 11.27 23
V to III 2.18 2.43 5.34 7.09 18.2 20.86 19.60 19.60 1.83 3.89 5 10.14
V to VI 0.9 1.31 1.37 1.88 3.57 2.35 3.89 3.89 0.84 1.17 2.02 2.24
38
GEA Tuchenhagen
2.2
2.4
36.65
27.13
2.2
3.18
19.3
19.25
4.65
3.32
20.22
24.34
2.19
3.37
18.86
17.79
4.65
3.37
17.7
17.79
2.42
1.82
26.43
17.98
9.58
10.58
2.56
39.69
23.54
25.05
28.25
2.01
15.29
22.93
25.39
16.21
1.6
2.05
59.92
55.33
32.9
18.51
2.49