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GEMÜ 539
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
c
h
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
c
h
ð
The union nut
g
is secured against twisting.
18. Mount the actuator.
15.4 Mounting the actuator
CAUTION
Incorrect combination of actuator and
valve body!
▶
Risk of damage to the actuator and
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
Actuator product label
Valve body marking
RAxxx
R002
RBxxx
R004
RCxxx
R006
RDxxx
R008
RExxx
R010
RFxxx
R012
RGxxx
R015
RHxxx
R020
RJxxx
R025
RKxxx
R032
RMxxx
R040
15 Inspection and maintenance