Replacing backflow preventer - need tips

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  #1  
Old 05-27-13, 10:53 AM
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Replacing backflow preventer - need tips

My backflow preventer/pressure vacuum breaker cracked because I didn't get it to last fall before a early hard freeze. Stupid home owner mistake...

Anyway, I'm trying to figure out to take one of these off and replace it, and I have seen some posts saying it's pretty easy... but I am not sure where to start. Do I need to take a hack saw to this thing to get it off? I see threads everywhere... but tried to take a wrench to them with no luck.

Some of the threads have teflon tape on them, I would assume these should unscrew.

Please help!! See attached pictures of my setup.
 
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  #2  
Old 05-27-13, 03:09 PM
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Your going to have to un-sweat all that copper. Thats the easiest way I see to do it, and thats most likely how they installed it. They installed the vacuum breaker, then did the copper last.
 
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Old 05-27-13, 04:27 PM
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One of the threads definitely had teflon tape... the one on the side. But the one underneath also looks like it has tape. There wouldn't be tape where they sweat the joint, would it?
 
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Old 05-27-13, 05:25 PM
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You live in MI and all that plumbing is installed outside
That's just nuts.
 
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Old 05-27-13, 07:33 PM
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You live in MI and all that plumbing is installed outside
Glad it is, or else I would have had a flooded basement when it burst.
 
  #6  
Old 05-27-13, 07:34 PM
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Where's the water coming from?
 
  #7  
Old 05-27-13, 07:54 PM
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Where's the water coming from?
There is a crack in the side of the PVB
 
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