5. PERIODIC MAINTENANCE
Please note that the periodic maintenance of the air valve is an integral part of the proper pipeline
maintenance regime; it should be maintained at least once a year in accordance with the quality and
composition of the fluid in the system.
Important: Before performing any work on the air valve, make sure that all workers on site are familiar
with the safety instructions section of this document and with all the relevant local and general safety
instructions, standards and work regulations.
5.1. Preparation
5.1.1. Required tools and materials:
• Small bowl with kitchen type liquid soap
• 4.5mm roll pin punch
5.2. First Stage Maintenance
Perform when a small leak is detected from the Discharge Outlet Elbow and clogging or debris in the sealing
mechanism is suspected
5.2.1. Releasing Pressure
• Shut the isolating valve located on the riser under the air valve
• Carefully release the pressure and drain the air valve
• Important: Discard liquid to comply with local regulations
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