Pursuant to some of the comments above re the use of teflon tape on pvc and cpvc joints, I'm in the process of replacing some ¼" CPVC piping, in an unused 2nd bathroom in a "far-corner" of the house - this winter, someone (me?) accidentally turned off the electric heat - usually set to 3 or 4 degrees C in the winter in that area.
When the water pump came on last week, and didn't turn off after the usual 45 seconds, I smelled a problem and quickly manually turned it off. Luckily I was home during this late winter thaw.
Don't ask about the basement floor. Anyhow it was soon sucked up with a big shop-vac. And the drywall ceiling UNDER that bathroom? Well, I'll replace it with some wood ceiling someday.
So- As a newbie here-
Never mind the cracked ½" cpvc in the back of the shower and tub stall. or the cracked toilet bowl. This will fixed at my leisure...
BUT- First thing:
I'm adding a coupla ball valves for hot&cold upstream from that bathroom. Why? because the main shower stall is ALSO downstream from the last valve on the circuit.**
So I hafta get this done before I wanna take a shower or bath!
I'm tired of washing up in the bathroom or kitchen sink!
The line is ¾" cpvc, so I'm adding a PVC valve to the cold, and since I couldn't see any cpvc valves sold locally, for the hot I bought a brass ball valve.
To the point :
Doing my homework, I found there's a lot of professional plumbing sites that advise you to never use teflon tape on cpvc or pvc threads. They will leak due to the shape of the thread groove. And they tend to let you overtighten the thread, causing the female part to crack.
So I'm using (specifically) Oatey white dope on both the cold - cpvc (male) to a pvc valve, and also on the cpvc thread going into the brass valve. Think it's good enough? AND any arguments about these guys that advise to NEVER to use teflon tape on pvc threads? - and NEVER overtighten!
thanx- but I never wish to solder copper again- especially with that silver stuff!
** I DID NOT INSTALL THIS MADNESS!