I'm remodeling my bathroom, and about to complete the rough in of my
shower/tub plumbing. I'm installing a Delta unversal valve. The model
number is R10000. My question is in regards to the male threads, of
which there are four, up/down/left/right. All of the litreature that I
can find from Delta seems to indicate inserting the 1/2 copper into the
"cup" of these connections, and then sweating the joint...leaving the
male threads unused, I asume for iron pipe. Is this correct? And is
this more fail safe than screwing on adapters?
Thanks for the help!
First time remodeler
This type of dual connection is pretty common these days on tub/shower
valves and the like. As you say, if you are using 1/2" copper it will
slide into the fitting and is sweat-soldered in place. Iron pipe is
not/should not be used anymore for water, but if you are using 3/4
copper, or pex or cpvc or similar, then you use a female adaptor on
the pipe and thread it onto the valve.
Personally, I prefer the soldered connection, but a properly made
threaded connection is probably just as good.
Remember to remove the plastic valve cartridge from the valve body
before you do any soldering. And it's a good idea to flush out the
piping before you reinstall the cartridge by turning on the water with
the cartridge out (be prepared, water will shoot out everywhere) to
get rid off any loose bits of solder or copper or just dirt in the
pipes; otherwise it will just plug up the ports in the valve later.
Good luck with your project,
I, on the other hand, having paid a small fortune to replace a crapped out
tub faucet, would vote for the threaded adapter, assuming this is an inside
wall with an access panel behind. Makes it a lot easier on the next guy to
I appreciate your information. This is inside a wall without other
access, which is why I'm concerned about getting the very best
connection that I can. Thanks for the tip on flushing the system.
I don't see how using threaded connections makes it any easier to
replace. The other end of each piece of pipe (Cold in, hot in, tub
out, shower out) is attached to something that doesn't turn. So even
if it's threaded on the valve, there's no way to unscrew it. Unless
you use four unions, and no way I'd bury even one union in a wall, let
So either way, you are going to end up cutting the valve out to
replace it. A good reason not to skimp on quality.
Remember to put the cartridge back in the valve body before you turn
the water on. I no somebody that left it out , there was water running out
the light fixtures in the kitchen below. I believe they lived in Sacramento.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.