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15.3.2 Replacing the seals DN 65 - DN 100
1. Remove the actuator.
2. Bend the locking plate h 90°, so that it lies flat on the valve
plug c.
g
h
c
3. Unscrew the entire valve plug c from the union nut g.
4. Loosen cylindrical screws 39 from valve plug c.
5. Remove retaining washer d.
6. Remove seat seal 14.
7. Unscrew seat flange f from the union nut.
8. Remove sealing washer 4 from the valve body.
9. Clean all parts of contamination (do not damage parts dur-
ing cleaning).
10. Insert new sealing washer 4 in seat flange f.
11. Screw the seat flange f into the union nut a and tighten it
until it is hand tight.
12. Screw union nut a tight with an appropriate open-end
wrench.
13. Insert new seat seal 14.
14. Insert retaining washer d and use cylindrical screws 39 to
fix it in place.
15. Place the locking plate h on the valve plug c.
16. Screw the entire valve plug c onto the union nut g.
17. Bend the locking plate h by 90°, so that it lies flat on the
union nut g.
g
h
c
ð The union nut g is secured against twisting.
18. Mount the actuator.
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15.4 Mounting the actuator
Incorrect combination of actuator and
valve body!
▶ Risk of damage to the actuator and
●
●
Valve body marking
Actuator product label
RAxxx
RBxxx
RCxxx
RDxxx
RExxx
RFxxx
RGxxx
RHxxx
RJxxx
RKxxx
RMxxx
27 / 34
15 Inspection and maintenance
CAUTION
valve body.
For control valves with a reduced valve
seat, make sure that the combination
of actuator and valve body is correct.
Compare the product label of the actu-
ator with the valve body marking.
RXXX
Valve body marking
R002
R004
R006
R008
R010
R012
R015
R020
R025
R032
R040
GEMÜ 539
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