SAS
Member
How much pipe needs to go into the coupling? I have about 1" of CPVC pipe to work with if I don't want to make this a much bigger job. Is that OK?
I will go with (L-N)/2. Example, for 1 inch, that would be 1.19 inches.How much pipe needs to go into the coupling? I have about 1" of CPVC pipe to work with if I don't want to make this a much bigger job. Is that OK?
Maybe I was unclear - the pipe is not labeled "cold water only", it's a CPVC male pipe thread adapter that is threaded into the check valve that is labeled "cold water only". I believe that the issue is the expansion rate of the plastic male threads vs. the expansion of the brass female threads on the check valve.CPVC pipe is NEVER labeled "cold water only" because using it for hot water, or the ability to use it, is the reason it is used in the first place.
If you don't have a suitable bucket, maybe you have a plastic waste basket or something to catch water. Even a good trash bag in a laundry basket or wicker basket can hold water that you might drain. Maybe I am misunderstanding what you mean.If I limit myself to staying between those two valves, I don't have much to drain.
You have threads on the check valve? That would seem to make replacing things, while reusing most of the parts, easier.Maybe I was unclear - the pipe is not labeled "cold water only", it's a CPVC male pipe thread adapter that is threaded into the check valve that is labeled "cold water only". I believe that the issue is the expansion rate of the plastic male threads vs. the expansion of the brass female threads on the check valve.
SAS, I'm sure you have resolved this by now, but for future reference: the transition fitting marked for cold water use does not have an o-ring like the hot water fittings have. The o-ring allows some movement of the pipe in the fitting to accommodate the high coefficient of expansion of plastic pipe vs. copper or other metal. Since in your application, the temperature of the water will not be fluctuating a great deal, you might be able to get by with the cold water transition fitting if your piping is not too constrained. I would be more concerned, however, if your CPVC threads were female.You need L-N divided by 2 for the insertion depth for a "perfect" joint. Depending on the application less may be adequate.
This is awkward, but...
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