Atmospheric Vacuum Breaker installed incorrectly

Atmospheric Vacuum Breaker installed incorrectly

By | Published December 2, 2013 | Full size is 2448 × 3264 pixels

The AVB cannot be under constant pressure or have irrigation control valves down stream.

It can have 12 hours of pressure in a 24 hour period of time.

It must be installed 6″ higher than all pipe and heads.

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