Shower Valve Rough, use union or not

lmei007 · Nov 6, 2013

I just found the shower rough in I have is thread type. I would like to be solder type.

I am a little worry about the leaking from the threaded joint after everything is there. One way to relieve this is use it with union.

Do you think it is good idea to add an union there?

thanks,

Terry · Nov 6, 2013

You can either solder in the male adapter to the body,
or solder a male adapter onto pipe first, dope and thread in.

Sponsor · 2022-01-29T12:20:58-0800

hj · Nov 6, 2013

Using a union just gives you three more places it could leak.

Dj2 · Nov 6, 2013

Plumbers have been installing threaded and sweat for years - done correctly they both have the same durability. You don't need unions.

Just remember to remove the cartridge if you sweat.

lmei007 · Nov 6, 2013

Terry said:
You can either solder in the male adapter to the body,
.

a special adapter? I tried the 1/2" pipe. It cannot being plug into the body.

Gary Swart · Nov 6, 2013

One way to do this is to solder a piece of pipe to a 1'2" male adapter. Then screw the adapter into the valve body. Then solder the rest of the fittings and pipe. This avoids getting the valve body too hot. This adapter is not really a "special" adapter, accepts a 1/2" pipe into one end and has 1/2" thread on the other. Very common, just ask for a 1/2" male adapter.

Shower Valve Rough, use union or not

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