EB 5766 EN
7
Design and principle of operation
Nominal size
DN
15
20
25
32
40
50
Thread size
G
½
¾
1
–
–
–
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