Burkert 2301 Series, Operating Instructions Manual, Page: 34 / 48

34
Maintenance, cleaning
WARNING!
Risk of injury due to improper operation.
Failure to observe the tightening torque value is dangerous due
to the risk of damage to the device.
▶
Only perform the replacement with special assembly tools
(for order numbers see chapter “12.2 Assembly tools”).
▶
Observe the tightening torque (see “Tab. 12: Tightening
torques valve body/nipple” and “Tab. 13: Tightening torques
valve seat assembly”).
Procedure:
→
Replace the valve seat as described below when the actuator
is removed.
Replacing valve seat
→ Use the assembly tool (with suitable tool attachment) and a
wrench to unscrew the old valve seat.
→ Clean the body thread and seal surface with compressed air.
→ If necessary, replace the tool attachment in the assembly tool
(depending on the DN of the new valve seat).
→ Attach a new valve seat to the assembly tool.
Assembly tool
Tool insert
Valve seat
Fig.21: Replacing the valve seat
WARNING!
Risk due to incorrect lubricants.
Unsuitable lubricant may contaminate the medium. There is a
risk of explosion in oxygen applications.
▶
For specific applications, e.g. oxygen or analysis applications,
use approved lubricants only.
Type 2301
English