Connecting cpvc to copper ice maker

[snrusnak]

Hi all. My house is plumbed with cpvc. It was also plumbed with an icemaker behind the fridge. The box and valve are in bad shape and I bought a new one to replace it, but want to make sure I am hooking it up correctly. Can someone confirm that I can use the fitting in the picture, I am somewhat familiar with using cpvc/pvc and how to cut and glue, etc. I'm not very familiar with copper any further than just replacing a valve with a crimp/crush connector. I don't know how to solder. My main concern is whether or not thread tape will seal this fitting, and hold up? I don't want a leak in the wall.

Thanks in advance.

 

[phishfood]

I use 4 or 5 wraps of teflon tape, then a thin smear of pipe dope (pipe thread sealant). After turning the water on and flushing it, leave it exposed for several hours to make sure it isn't leaking. Thread joints aren't a bad way of joining pipe, but they do tend to leak more often than solvent weld (glue) joints or crimp joints.

 

[snrusnak]

Thanks for the reply. Ok I guess I'll pick up some pipe thread sealant(I've never used it).

Is it safe to say that if it doesn't leak immediately(after watching it for 24 hrs or so) that it will hold up "forever".

 

[phishfood]

Usually, yes. After several hours, run a dry finger around the joint, and then look for moisture on your finger. That is the best way I have found to find tiny leaks.

 

[snrusnak]

I just realized you are in orlando. Maybe you could just come set it all up for me???

JK

Thanks for the help.

 

[snrusnak]

I have been looking at various fittings around the house after making this thread... Many of them use an adapter similar to mine to go from cpvc to copper(main line in from street is cpvc then adapts to copper in to the house then back to cpvc again. Also the water heater has these adapters). The difference is the ones they used are completely plastic, even the threaded part. Are these ok to use? Or should I stick with the metal threaded ones on all future projects?

 

[phishfood]

The plastic ones are OK on cold water lines if the plastic adaptor is male , but not for hot of if the adaptor is female. Personally, I only use the all plastic male adaptors for non pressure situations.

 

[snrusnak]

Thanks for the info. Might as well just use the metal ones and be safe...

The ones I've seen on my house I think are all female. I think all are on cold lines though.