EB 8059 EN
37
Servicing
7.2.2 Version with insulating
section
1. Remove the actuator from the valve. See
associated actuator documentation.
2. Undo the body nuts (14) gradually in a
crisscross pattern. Remove the bolts (13).
3. Pull the insulating section (21) together
with the plug (5) out of the body (1).
4. Remove the body gasket (17). Carefully
clean the sealing faces in the valve body
(1) and on the insulating section (21).
5. Apply a suitable lubricant to the new
body gasket (17) and insert it into the
body.
6.
Push the insulating section (21) together
with the plug (5) into the body (1).
Make sure that the threaded flanges (57,
111) are positioned parallel to each oth-
er and that their bolt holes are aligned
exactly above one another.
Version with V‑port plug:
place the insu-
lating section (2) onto the valve body,
making sure that the largest V-shaped
port of the V-port plug faces toward the
valve outlet. See section 5.1.
7.
Insert the bolts (13) through the threaded
flanges (57, 111) and tighten them, ob
-
serving the tightening torque.
8. Tighten the body nuts (14) gradually in a
crisscross pattern. Observe tightening
torques.
9. Mount actuator. See associated actuator
documentation.
10. Adjust lower or upper signal bench
range. See associated actuator docu-
mentation.
7.2.3 Version with bellows
seal
Risk of leakage due damage of the metal
bellows.
While mounting the bellows, make sure that
no torque is transferred to the metal bellows.
1. Remove the actuator from the valve. See
associated actuator documentation.
2. Undo the body nuts (14) gradually in a
crisscross pattern. Remove the bolts (13).
3. Pull the bellows seal (22) together with
plug (29) and plug stem (37) out of the
body (1).
4. Remove the body gasket (17). Carefully
clean the sealing faces in the valve body
(1) and on the bellows seal (22).
5. Apply a suitable lubricant to the new
body gasket (17) and insert it into the
body.
6.
Push the bellows seal (22) together with
plug (29) and plug stem (37) into the
body (1).
Make sure that the threaded flanges (57,
111) are positioned parallel to each oth-
er and that their bolt holes are aligned
exactly above one another.
Version with V‑port plug:
place the bel-
lows seal (22) onto the valve body, mak-
NOTICE
!
Summary of Contents for 3259
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