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Note: Before actioning any maintenance programme observe the
The metal foil sheet used to reinforce gaskets is very thin and sharp. Care should be
taken when handling to avoid the possibility of cuts or lacerations to fingers or hands.
4.1 Routine maintenance procedures
24 hours operation
After 24 hours service check pipework connections and flange bolts for tightness.
Annually
The valve should be inspected for wear and tear replacing any worn or damaged parts such as
valve plug and stem, valve seat.
4.2 General maintenance information:
-
The valve faces must be kept clean.
-
The strainer should be cleaned at regular intervals to ensure that the flow to the valve is clean
and unrestricted.
-
If at any time it is necessary to take the valve out of the line for servicing then the appropriate
safety precautions need to be adhered to (see Section 1).
-
The available spares and fitting instructions are detailed on the appropriate Technical
Information Sheet (see Section 2).
4.3 KB and KC valves
With the bellows assembly it is essential that the central passage 'X' through the valve push rod
and the ports 'Y' are kept clear. To facilitate cleaning (should this become necessary) the end
of the passage is blanked by a 4 mm 'Unbrako' set screw 'Z' which can be removed to enable
a piece of wire to be passed through the passage and ports.
It is important that the set screw 'Z' is replaced before the valve is put back into service.
IM-S21-01 CH Issue 7
4. Maintenance
'Safety information' in Section 1.
Warning
(refer to Figure 6)
Z
Y
X
Y
Fig. 6
9
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