Data Sheet for Product

3
N4211en
Smart Infrastructure
2021-12-13
Sizing
Flow diagram:
---
Δp
max
for VAI61.. and VBI61.., for details, see table on equipment
combinations
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