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Author:
Anonymous User
I adapted 3/4" cpvc to 1/2" galvanized using a cpvc compression fitting only to be called back 4 hours later to a flooding house. There were no obvious reasons for it to have come apart, no broken parts, but the fitting had come off of the galvanized pipe and flooded the house.
It was a vertical application unlike others I have done in a horizontal application without any problems. Don't know if the vertical positioning makes a difference?! I can't figure out why it failed. Any ideas? I am open to any and all input.
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Author:
Anonymous User
Unless you have something that I haven't run into yet the cpvc compression union will not grip on galvanized or copper.
When I adapt over ( I use cpvc all the time as primary piping ) I use steel dressure with a friction ring on galv Or brass adaptor on copper.
Good luck
Southern Plumber
Also whenever I try something new I build a test in my shop and give it heck beforew I put it in a cust. house
southern plumber
Post Edited
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Author:
Dunbar (KY)
Did you check the water pressure before you made this application?
High water pressure can produce this result, along with thermal expansion from water heater, fast actuating valves (dishwasher,washing machine) or simply not tightening it down.
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Always be aware of cross-connections in your potable water systems---They could one day harm you and your loved ones.
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Author:
Scott D. Plumber (VA)
Wow, sorry to hear about that. I hope you have a good GL policy.
I do not like compression on anything other than fixture supplies and drainage stuff (just not comfortable with them)and would get back to a threaded joint and use a CPV x mip adapter instead.
Good luck.
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Give your kids a great start on the future! Encourage them learn a trade. Even if they go on to do other things, it's always nice to know that they have something to fall back on. Call your local technical training center or trade school to learn more.
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Author:
hj
In th ehorizontal installations the pipe may have been locked in place so it could not move. Unless the compression "ring" can imbed itself into the pipe, as when using copper tubing, the seal depends on friction between the ring and pipe. When that is the case, the instructions always specify that the pipe be secured so it cannot move and then the compression joint just has to seal the leak, not restrain the piping also, as it was intended to do.
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