9
Industrial Valves
Replacement of the cover seal
(Fig. 10)
The numbers in square brackets e.g. [500] are item numbers
relating to the adjacent figures.
Prerequisite:
The complete section of the pipework in which the valve is
found is de-pressurised, cleanse and easily accessible so that
the service personnel are not endangered in any way.
Suitable safety measures must be taken before disassembly
if there is the possibility of dangerous medium residues
around the cover.
1.
Loosen and remove the screws [53] (Fig. 10).
2.
Disassemble the cover [7] and remove the old cover
seal [37].
3.
The ring [25] may fall out fom the body when the cover
is disassembled.
4.
Position the new cover seal [7] and ring [25] on the
cover and install.
5.
Tighten the screws [53] by hand using minimal force
initially.
6.
Tighten the screws [53] with the recommended torque
listed in Table 1 on page 8.
7.
If there is still a leakage, the manufacturer should be
contacted.
If additional repairs or the replacement of other
parts are necessary to ensure safe operation of the
valve, then the manufacturer must be contacted.
Fig. 10