42
14
10
17
Edition: 2021-04 Original document - Mi-205 EN
6.5 Replacing the PTFE seat MTV
To replace the seat, the complete valve assembly is dismounted from the pipeline (➔ Chap. 6.1)
and sometimes the actuator must also be removed from the valve (
➔ Chap. 5.4).
Attention!
To change the seat, the butterfly valve has to be safely fixed in a fastening device!
Danger!
Risk of injury!
Observe movements of the disc.
Keep hands, tools and other objects away from the area where the disc moves when the
actuator is connected to compressed air system. Single action actuators may move to “open” or
“closed” position without being connected to the air system.
Warning!
Before carrying out maintenance or repair work on the valve with actuator as well as installation
and disassembly of the butterfly valve in the pipeline, always disconnect the compressed air
supply to the actuator.
Single action actuators may move to “open” or “closed” position without being connected to the
air system.
17 Screw 14 Seat
10 Cover plate
Fig.6-6 Replacing the PTFE seat
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