8
IOM D-040
2.3. Installation Instructions
1.
Flush the system before installing the air valve to avoid any debris or sharp objects getting into the air valve.
2.
Carefully remove the air valve from the shipping package. Unload all air valves carefully to a sturdy level surface
taking care not to drop them.
3.
Install an isolating valve below the air valve, connected by a riser to the crown of the pipe.
4.
The D-040 combination air valve should be installed vertically on a riser on the crown of the pipeline.
