Quote:
Originally Posted by tophcfa
Interesting, the set screw on ours required a torx wrench to remove. Not tools that many homeowners have handy, but I was lucky enough to have the right size torx attachment in my assorted drill bit collection. It was very easy to remove without drilling. That being said, our home was built in 1996 so perhaps the newer homes have a different fixture setup?
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If the backflow prevention device (vacuum breaker) were not tamperproof, it would just screw onto the hose bib with no set screw required. The only reason to use the set screw is to prevent people from removing the backflow preventer. Newer devices have a raised, hex head for tightening the set screw. After tightening it, the plumber is supposed to break off the hex head. Newer designs do not have a torx head to remove the set screw. The backflow device is required by the plumbing code to prevent contaminated water from backflowing into your house and your potable water system.