Posted on Monday, July 10, 2017 on product Wilkins 34-720A Pressure Vacuum Breaker Assembly - 3/4"
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0voteA: The purpose of the initial leak is to let you know that the air inlet valve is fully open. The air inlet valve will open when the pressure in the body is no less than 1.0 psi above atmospheric pressure. The air inlet valve will be fully open when the water drains from the body. If you have any other questions our experts are here to help! Call or text 800-518-5388Posted by Kully Supply on Monday, July 10, 2017