28
EB 3128 EN
Start-up and operation
– – – – DN 15, K
VS
4.0: ∆p
restriction
= 0.3 bar
1)
Flanged valve body made of spheroidal graphite iron
Flow rate
1
2
3
4
5
6
7
8
9
10
11
0.1
0.2
0.3
0.5
1
2
3
4 5 6 7 8 9 10
15
V
m
3
/h
DN 15
K
VS
4
DN 25,
K
VS
8
DN 40,
K
VS
16/20
3)
DN 50,
K
VS
20/25
3)
Turns of the set point screw or scale
divisions
One scale division <> One turn of the set point screw
Fig. 10:
Set point adjustment for flow rate (guide) · DN 25, 40 and 50
Differential pressure across the restriction
Δ
p
restriction
= 0.2 bar