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10
Appendix
The following chapter shows the various valve technologies based on exemplary illustrations.
A/B fl ushing technology
10.1.1
In A/B fl ushing technology, several riser branches
or distribution lines are connected to a common
fl ushing line. Here, one A valve and the B valve are
successively opened and closed together.
This guarantees that there is no idling in the fl us-
hing lines and there is no water exchange between
the pipelines to be fl ushed.
Example of a fl ushing process:
A1 and B1 open in accordance with the
specifi cations, A1 and B1 close
A2 and B1 open in accordance with the
specifi cations, A2 and B1 close
A3 and B1 open in accordance with the
specifi cations, A3 and B1 close
A4 and B1 open in accordance with the
specifi cations, A4 and B1 close
Info!
If valve A1 is flushing, the pending
flushing processes of other valves are
blocked. With temperature flushing,
these are then carried out successively
by the system.
10.1
It is recommended to place a maintenance cut-off,
fi gure 173, in front of each A-Valve.
A-Valve
KHS maximum fl ow
isolation ball valve
with servo drive 230V
AC, Figure 686 04
© www.kemper-group.com – 10.2023 / K410068602008-00 – 175 /265
Valve technologies
A1
A2
A3
A4
B1
B-Valve
KHS PLUS maximum
fl ow isolation ball valve
with servo drive and
spring reset 230V AC,
Figure 686 05
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