Pricelist CE Oct 2024 - Flipbook - Page 214
Zeta (K) values, valve in semi-open positions. Percentage, is based on turns of stem, from closed to fully open valve.
Opening of valve
DN40
DN50
DN65
DN80
DN100
DN125
DN150
DN200
DN250
DN300
DN350
DN400
DN450
DN500
10%
20%
30%
40%
50%
75%
100%
18
10
5
2
1
0.23
0.04
25
11
5
2
1
0.20
0.03
46
23
11
6
3
0.42
0.07
41
22
10
5
2
0.37
0.06
33
16
8
4
2
0.27
0.04
23
11
6
3
2
0.28
0.05
39
18
8
3
1
0.19
0.02
26
13
6
3
2
0.25
0.04
37
17
7
3
1
0.20
0.03
45
19
8
3
1
0.16
0.02
46
19
8
3
1
0.16
0.02
45
19
8
3
1
0.16
0.02
46
19
8
3
1
0.16
0.02
46
19
8
3
1
0.16
0.02
Opening of valve
DN600
DN700
DN800
10%
20%
30%
40%
50%
75%
100%
46
19
8
3
1
0.16
0.02
46
19
8
3
1
0.16
0.02
46
19
8
3
1
0.16
0.02
DN900 DN1000
52.09
10.63
4.36
2.03
1.10
0.26
0.02
52.09
10.63
4.36
2.03
1.10
0.26
0.02
NOTE: Hydraulic figures are based on both tests and calculations, depending on size. Value uncertainty, ref EN1267
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