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Old 01-22-2014, 11:53 AM   #15
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All RV toilets have a built in vac. breaker? Learned an interesting fact today! Is it something that can fail and be checked periodically or do you maybe know it's failed because it's leaking?

Your first link didn't work. Have those freeze-less faucets on our house and wondered what the thing on top was.

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Originally Posted by mel stuplich View Post
myredracer
IMO, because all RV toilets, (and black tank flush water supplies), have a built in vacuum breaker, there is no reason to add a vacuum breaker to the plumbing of a commercially built RV.

BTW, many campground faucets, and other outside water faucets, have a vacuum breaker like this, https://mail.google.com/mail/?tab=wm...3b1b5748fc82e1, permanently attached.
Some residential outside faucets like this one, Woodford Model 17 Anti-Siphon Outdoor Faucet, have a built in vacuum breaker.

Mel
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Old 01-22-2014, 01:17 PM   #16
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Quote:
Originally Posted by myredracer View Post
All RV toilets have a built in vac. breaker? Learned an interesting fact today! Is it something that can fail and be checked periodically or do you maybe know it's failed because it's leaking?

Your first link didn't work. Have those freeze-less faucets on our house and wondered what the thing on top was.
This pictured is actually for the black tank flush. However, you are correct, that RV toilets have a vacuum breaker.
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Old 01-22-2014, 01:45 PM   #17
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From the RV Doctor's website:

If water drips to the floor from the upper portion of the toilet only during the flushing cycle, the problem is most likely the vacuum breaker.
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Old 01-23-2014, 09:10 AM   #18
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Quote:
Originally Posted by myredracer View Post
All RV toilets have a built in vac. breaker? Learned an interesting fact today! Is it something that can fail and be checked periodically or do you maybe know it's failed because it's leaking?

Your first link didn't work. Have those freeze-less faucets on our house and wondered what the thing on top was.
myredracer
Usually the vacuum breaker in RV toilets are not a problem, however if they do leak parts should be available from the toilet manufacturer.

Sorry about the bad link.
Try: BrassCraft 1 in. 20 Fine Thread x 3/4 in. Hose Thread Brass Garden Hose Vacuum Breaker-PS612X at The Home Depot

Mel
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