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Type 2920, 2921, 2960, 2961
7
INSTALLATION
DANGER
Risk of injury due to high pressure and escaping medium.
▶ Switch off the pressure before working on the device or
system. Vent or empty the lines.
WARNING
Risk of injury due to improper installation.
▶ Assembly may be carried out by authorised technicians only
and with the appropriate tools.
▶ Observe tightening torques.
Risk of crushing by mechanically powered parts.
▶ Do not reach into the openings of the valve body.
Risk of injury due to unintentional activation of the system and
uncontrolled restart.
▶ Secure the system against unintentional activation.
▶ Following installation, ensure a controlled restart.
CAUTION
Risk of injury due to heavy device.
During transportation or installation work, a heavy device may
fall down and cause injuries.
▶ Transport, install and remove heavy device with the aid of a
second person only.
▶ Use suitable tools.
Installation
7.1
Notes for correct installation
→ Note the installation position. The device can be installed in any
manner, preferably with the actuator facing upwards.
→ Ensure pipes are aligned before connection.
→ Note the flow direction. The flow direction is visible on the
valve body and on the type label.
→ Clear impurities from pipelines (seal material, metal chips,
etc.).
7.1.1
Devices with welded connection
Remove the actuator from the valve body as follows:
→ Turn the valve approx. twice to open it and to release the valve
seat seal.
→ Place a suitable open-end wrench on the wrench flat of the
body connection.
→ Unscrew actuator from the valve body.
7.1.2
Devices with threaded connection
→ Only uninstall the actuator if required by the customer.
7.2
Installing valve body
Valve body with welded connection
→ Weld or bond valve body in pipe system.
Other body variants:
→ Connect valve body to pipe.
english
13
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