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MAINTENANCE AND INSPECTION
MAINTENANCE:
The valve is designed for underground use with little maintenance and no lubrication required. However, attention to the
following points will ensure satisfactory working at all times.
Removing the head assembly from the valve and examining the faces and moving parts for wear and if necessary,
fitted as required.
years without attention.
backflow. It is usually advisable to renew joints after disturbing them.
MAINTENANCE SCHEDULE:
1. Valves that are not operated frequently and which may remain open or closed for long periods should be operated, even partially,
about once a month.
2. Inspection
Should be carried out thoroughly every six months.
If inspection of the valve is required, follow the
INSPECTION Instructions.
3. O-rings and O-cord
When faulty O-rings and O-cord are the cause of leaks, care should be taken to ensure that the replacements are of the correct material.
4. Vibration
After lengthy periods of operation connecting bolts should be checked for tightness. (This should be done more often if vibrati on is
expenrienced in the pipeline).
5. Freezing
Where it is necessary to keep a valve closed in cold weather precautions must be taken to prevent it ‘freezing up’.
Routine scouring is of great value in keeping the water free of grit and thus saving unnecessary wear and tear on the faces and seals.
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