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mtnbkr · Nov 9, 2007, 11:03 AM

For angle stops (well I guess any situation, not just for angle stops), I've seen the solvent weld type for CPVC. Can I use a regular compression type for CPVC as well? I know you can use it for copper, but wasn't too sure about it for CPVC.

plumberjames83 · Nov 9, 2007, 05:02 PM

I think they are the same but you need a plastic farell insteed of metal one

labman · Nov 9, 2007, 08:29 PM

Do you mean use a standard chromed angle stop with a CPVC feed? If so, just glue on a 1/2'' MPT adapter and screw on the valve. If it isn't out where it shows, I would use an elbow and a standard CPVC ball valve.

I don't think CPVC comes in the 3/8'' tubing from the valve to the faucet where you would use a ferule.

mtnbkr · Nov 10, 2007, 06:33 AM

I'm asking about the chromed angle stops that are usually for copper only. I know I can glue an adapter, and buy a threaded stop.

As for CPVC ball valves, the only kind I've seen are completely plastic, and have a large red knob. Is that what you're talking about? Why do you say to use this if it isn't in the open?

The ferrule I'm talking about would be at the 1/2" end, on the feed side of the valve.

speedball1 · Nov 10, 2007, 10:50 AM

I'm asking about the chromed angle stops that are usually for copper only

Ask no more! A 1/2 X 1/4" compression angle stop will not fit on a 1/2" PVC/CPVC stubout. For the added security of a threaded connection over a compression one we err on the side of caution and glue a 1/2 X 1/2" FIP threaded adapter on the stubout and a threaded angle stop on to the adapter. If a compression stop blows off in the middle of the night and floods your home before you wake up in the morning this could really put a crimp in your morning coffee enjoyment. Good luck, Tom

mtnbkr · Nov 26, 2007, 05:05 AM

Originally Posted by speedball1

Ask no more! A 1/2 X 1/4" compression angle stop will not fit on a 1/2" PVC/CPVC stubout. For the added security of a threaded connection over a compression one we err on the side of caution and glue a 1/2 X 1/2" FIP threaded adapter on the stubout and a threaded angle stop on to the adapter. If a compression stop blows off in the middle of the night and floods your home before you wake up in the morning this could really put a crimp in your morning coffee enjoyment. Good luck, Tom

Would you recommend the method you describe above with the threaded angle stop, or using a "CPVC angle stop" that solvent welds directly to the stubout?

labman · Nov 26, 2007, 05:53 AM

Originally Posted by mtnbkr

As for CPVC ball valves, the only kind I've seen are completely plastic, and have a large red knob. Is that what you're talking about? Why do you say to use this if it isn't in the open?

Sorry I didn't answer this question at the time. In general I prefer to always use ball valves. I do have to admit the chromed angle stops look nicer where they show.

Glue/thread is sort of a technical issue I would do as Tom says.

mtnbkr · Nov 26, 2007, 06:08 AM

Originally Posted by labman

Sorry I didn't answer this question at the time. In general I prefer to always use ball valves. I do have to admit the chromed angle stops look nicer where they show.

Glue/thread is sort of a technical issue I would do as Tom says.

Referring to the ball valves, are you talking about angle stop ball valves vs multi turn style? Or are you talking about a ball valve that just has a 1/2" connector on each side?