5.2.3. Cleaning of the Air Valve
• Thoroughly wash and clean the air valve components under clean running water to remove all grime; Pay special
attention to the internal parts.
• Thoroughly clean the O-ring (replace it if needed
[1]. Make sure that the O-ring is correctly seated
in its designated groove [2].
5.2.4. Assembly and Testing for Leaks
• Reassemble the air valve in reverse order of paragraphs 5.2.3 and 5.2.2.
• Slowly open the isolating valve located on the riser under the air valve.
• Look for leaks in the Outlet Discharge Elbow.
• If the air valve still leaks, proceed to Second Stage Maintenance
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