26
EB 3128 EN
Start-up and operation
Different K
VS
coefficients are available for
valve size DN 15 to provide several flow set
point ranges.
Retighten the lock nut and screw the cap
(8.6) back on after the required flow rate is
reached.
Type 45-9 Flow Regulator in special version
with external scaled cap (five scale divisions)
for adjustment of the flow rate set point
The set point can be adjusted directly using
the scaled cap (one marked scale division
corresponds to one turn of the set point
screw).
Fig. 7:
Type 45-9
with scaled
cap for set
point
adjustment
Flow rate
1
2
3
4
5
6
7
8
9
10
11
0.01
0.02 0.03 0.05
0.1
0.2 0.3
0.5
1
2
3 4 5 6 7 8 910 15
V
m
3
/h
DN 15
K
VS
0.4
DN 15
K
VS
1
DN 15
K
VS
2.5
DN 20
K
VS
6.3
DN 32
K
VS
12.5
Turns of the set point screw or scale
divisions
One scale division <> One turn of the set point screw
Fig. 8:
Set point adjustment for flow rate (guide) · DN 15, 20 and 32
Differential pressure across the restriction
Δ
p
restriction
= 0.2 bar
