Help removing water shut-off valve under sink

[seeker987]

I am replacing my kitchen faucet—pretty simple, right? Well, when I went to remove the hot water line to the faucet, I seem to have moved the valve just enough for it to start leaking at the connection to the pipe below. Arrow in attached photo points to the leak. I can’t seem to remove this valve by turning. The pipe does not seem to be cracked. What do I need to do to fix it?

 

[Twowaxhack]

Turn all the water off, bleed pressure down.
Remove the valve and slide the nut down.
Wrap the brass ferrule with one wrap of Teflon tape in a clockwise direction.

Reinstall valve and snug tight.

 

[seeker987]

Thanks, any suggestions on how to remove the valve? I’ll admit i’m not the strongest, but I’m having trouble removing it.

 

[Twowaxhack]

Hold the valve and then with another wrench turn the nut clockwise to remove.

 

[Jeff Handy]

What twowax is saying is it is a compression fitting.
The valve is not threaded on like with old galvanized pipe.

 

[BlueSkyHigh]

I've had a leak like that before and I was able to stop it by cranking the compression nut down onto the valve with brute force rather than having to R&R the connection itself. YMMV (your mileage may vary) and you may end up breaking the valve and/or pipe.

 

[House Doc]

Ahhh.. that damned CVPC pipe monster. As it gets older CVPC becomes very brittle and will crack at the slightest stress (I've had 2 in the same house break, just by closing the stops)
You can try what's mentioned above or get a new 1/2" IP stop and a CPVC adaptor and glue it on. Telflon tape the fitting and install it into the stop before gluing it on. That way it's perfectly lined up.

 

[Twowaxhack]

Turn all the water off, bleed pressure down.
Remove the valve and slide the nut down.
Wrap the brass ferrule with one wrap of Teflon tape in a clockwise direction.

Reinstall valve and snug tight.

Correction : Wrap Teflon in counterclockwise direction.