EB 8052 EN
39
Servicing
Risk of valve damage due to the use of un-
suitable lubricants.
Only use lubricants approved by SAMSON
(see parts list).
The control valve was checked by SAMSON
before it left the factory.
−
Certain test results (seat leakage and leak
test) certified by SAMSON lose their validi
-
ty when the valve body or actuator hous
-
ing is opened.
−
The product warranty becomes void if ser
-
vice or repair work not described in these
instructions is performed without prior
agreement by SAMSON's After‑sales Ser
-
vice department.
−
Only use original spare parts by SAM
-
SON, which comply with the original spec
-
ifications.
7.1 Replacing the gasket
Risk of control valve damage due to incorrect
service or repair.
The gasket can only be replaced when all the
following conditions are met:
−
The valve size is ≤NPS 4.
−
The valve does not have a balanced plug.
−
The valve does not have a flow divider.
To replace the gasket in other valve versions,
contact SAMSON's After‑sales Service de
-
partment.
7.1.1 Standard version
1. Remove the actuator from the valve. See
associated actuator documentation.
2. Undo the body nuts (14) gradually in a
crisscross pattern.
3. Lift the flange (2) and plug with plug
stem (5) off the body (1).
4. Remove the gasket (17). Carefully clean
the sealing faces in the valve body (1)
and on the flange (2).
5. Insert a new gasket (17) into the body.
6. Place the flange (2) onto the body.
Version with V-port plug:
place the
flange (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. Firmly press the plug (5) into the seat (4).
Fasten down the flange (2) with the body
nuts (14). Tighten the nuts gradually in a
NOTICE
!
Note
NOTICE
!
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