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By | Published August 1, 2013 | Full size is 2448 × 3264 pixels

Atmospheric Vacuum Breaker or AVB!

This device can not have constant pressure on it. It can not be inspected with gauges. It has to be 6″ taller than the highest sprinkler heads and piping. In Most cases, this will not meet the minimum standard on an Irrigation System.

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