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joining 1" copper to 1" cpvc. Is there a way without sweating a copper fitting?

joining 1" copper to 1" cpvc. Is there a way without sweating a copper fitting?

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  #1  
Old 11-22-04, 12:02 PM
GaryS
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joining 1" copper to 1" cpvc. Is there a way without sweating a copper fitting?

I will be joining 1" nominal copper to 1" cpvc and I am wondering what my options are. Of these listed below, what is best? (i would prefer to avoid sweating anything actually... but if i must....)

1) sweat a union onto the copper. then glue the cpvc into the union
2) sweat a male fitting onto the copper then join to a cpvc femaleadapter
3) sweat a female fitting onto the copper then join to a cpvc male adapter
4) a union that would compress onto copper side but glue on the cpvc side?

any other suggestions?
 
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  #2  
Old 11-22-04, 12:07 PM
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Go with number 3. Hoping this is not in a wall though. Most states do not allow threaded joints to be in walls. Female CPVC adapters are not really recommended either. Good luck.
 
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Old 11-22-04, 12:59 PM
GaryS
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What are the odds that I could use a compression fitting for both the copper and cpvc? The joint will be in the open and not through a wall. I read that compression fittings on cpvc have a lengthy and successful field history.
 
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Old 11-22-04, 02:42 PM
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If you can find a compression fitting to match both I suppose you could use it. CPVC is not the same size OD as the copper.
 
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Old 11-22-04, 02:55 PM
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Wink

With dragon #3 sounds good But if you dont want to solder . A 1" compression to Mpt 1 " coupling there and a mpt on the CPVC. I would not try a compression fitting on the CPVC.

ED
 
  #6  
Old 11-22-04, 03:02 PM
GaryS
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With dragon #3 sounds good But if you dont want to solder . A 1" compression to Mpt 1 " coupling there and a mpt on the CPVC. I would not try a compression fitting on the CPVC.
Ok... I get the compression fitting onto copper but what would be the transition to cpvc? I didn't understand the mpt 1" coupling there and a mpt on the cpvc...

Just in case... I will have 1" cpvc pipe literally connecting to copper so I don't need any more fittings on the cpvc side...
 
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