5 Installation at Site
23 of 36
BOA-Control PIC
7138.8/01-EN
5.6 Flushing the valve
Flushing the piping prior to commissioning is recommended to prevent dirt particles
from the installation process from clogging system components or impairing their
function. Fully opening the valves is usually sufficient to allow maximum
throughflow. An additional step is required to enable flushing of nominal sizes
DN 10 - 25.
DN 10 - 25
Fig. 8:
Flushing the valve (DN 10 - 25)
1. Remove cap 580.1 or the actuator.
2. Remove body bonnet 161 with an open-ended spanner, turning the spanner in
anti-clockwise direction.
3. Pull out the trim.
4. Remove the throttling orifice (A).
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Reassemble the valve in reverse order. Screw on the body bonnet in
clockwise direction and tighten it to 15 Nm. The piping can now be flushed.
After flushing the piping repeat steps 1 to 3.
5. Fit throttling orifice (A) again.
6. Set the presetting for the required volume flow rate.
Summary of Contents for BOA-Control PIC
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