User Manual

3
Siemens A6V11974394de
Smart Infrastructure 2020-12-21
Sizing
Flow diagram:
Lo
w
n
o
i
s
e
o
p
e
r
a
t
i
o
n
200
300
400
55,6
83
111
1
7
2
2
2
5
1
3
3
5
4
9
6
8
7
3
9
6
4
2
1
4
D
0
1
8
9
--- Δp
max
for VBG60.., for details, see table Equipment combination
Δp
max
= Maximum permissible differential pressure over the ball valve, valid for the
entire positioning range of the ball valve rotary actuator unit; if low noise
operation is desired, we recommend a maximum permissible differential
pressure of 200 kPa
Δp
v100
= Differential pressure over the fully opened ball valve and over the control
path at a volume flow V
100
100
= Volume flow through the fully opened ball valve
100 kPa = 1 bar ≈ 10 mWS
1 m
3
/h = 0.278 l/s water at 20 °C