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Author:
ericsandstone (TX)
At the end of workshift today, I go into office trailer to sign out. Told the foreman that we installed all of the balancing valves and ball valves in series where they were needed. He say's, "you shouldn't have gotten that done." After inquiring as to why not, I find out that a 1st year apprentice on job pointed out the small lettering on a charolette pipe cpcv cts male adapter fitting. It clearly stated, for cold water use only. Found it on their site later as part number CTS - 2109 or something to that effect. The point is that these types of fittings now have likely been installed in a few hundred locations on hot water side at this job. My question is: does anyone know why this particular fitting is not to be used on a hot water system? Then, my guess is that we would only have alternative of using another male adapter I noticed on the site; appears to be of brass material male side of adapter and cpvc coupling on other side. We have likely used a good number of the incorrect male adapters all over the job for hot water piping. I feel strange for being in plumbing for over ten years and not being previously aware of this. The foreman went on to say that this was fault of someone they hired to give us all joint assembly class to do with both PVC and CPVC. I disagree with this however, and believe that the failure is comprehensive and the fault of a great many people all along the process chain. Someone's should have known before these incorrect fittings were ordered for the job. I also am a bit surprised since, I believe in the only dope or only teflon tape type of user... never both. They have got us using teflon for the males which is recommended by manufacturer for cpvc and white dope (rectorseal T2) which is not. Thanks for any and all answers. I have long looked to the real pro's on this site for answers and always get what I asked for.
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Author:
hj (AZ)
robably because the CPVC adapter has a higher hot water coefficient of expansion than the brass thread it is screwed into,, which will eventually cause a leak
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Author:
Ridgidman (VA)
Well, I learned something new today. Every day is a school day.
I am used to using CTS 2115L when connecting CPVC to brass valves. Less chance of stripping the threads.
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Author:
SHEPLMBR70 (VA)
That or the 2109-B. it is a brass with cpvc insert. Some vendors also make them in stainless steel with cpvc
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