The constant worry is over.. No more freezing hose bib, just a clean piece of steel.
I had been mulling over how I was going to make my outdoor shower frost free to include speaking with several plumbers who did not know of a solution. I watched a UTube video of a plumbing tech show in Las Vegas and saw that it is what I needed as I have a swim spa and we have below freezing temperatures often in the winter months. Like to shower before and after getting into the swim spa.
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Vacuum Breaker V2+ This replacement fixed the hammer issue at two spigots that I was experiencing. Though I could not detect any visual difference between existing and new replacement vacuum breaker, once replaced the spigot worked again properly.