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EB 5766 EN 7
Design and principle of operation
Nominal size DN 15 20 25 32 40 50
Thread size G ½¾1–––
K
VS
coefficients
Version with female thread 3.6 5.7 7.2 – – –
Version with male thread 4 6.3 8 16 20 25
Reduced K
VS
coefficients
0.1· 0.16 · 0.25 · 0.4
0.63 · 1.0 · 1.6 · 2.5
1.0 · 1.6 · 2.5
4
5)
· 3.6
6)
–––
Rated travel mm 6 12
1)
Use an intermediate insulating piece for temperatures above 130 °C to protect the actuator
2)
DN 15 to 25 with Type 5757 Actuator:
Use an intermediate insulating piece for temperatures above 110 °C to protect the actuator
3)
Differential pressure for K
VS
= 1 and 1.6
4)
Differential pressure for K
VS
= 2.5 and 4
5)
Version with male thread
6)
Version with female thread