Talk:Atmospheric vacuum breaker

Atmospheric Vacuum Breaker Flow Diagrams
Does anyone think that having some flow diagrams here would help clarify the different operating modes (eg normal, backflow, backflow leakage, etc.). Seems I am starting the first comment here, but I will check on my own in my engineering textbooks to see if I can find anything that would helpful in this case.--Ivangiesen (talk) 12:54, 15 June 2020 (UTC)

Cost?
Why so much variation in cost of vacuum breaker/backflow preventers (eg $3-35)? Which type is needed for home/yard use? Is freeze-resistance important? JdelaF (talk) 21:00, 15 April 2023 (UTC) JdelaF (talk) 21:00, 15 April 2023 (UTC)