Hi. A faucet that features only shower and no tub spout. Can the tub spout be added by paralleling a 'T' at the upper shower branch and a tub spout with a stopper at bottom ?

 

Sorry , going to need some more pictures as to what you want to do.
Also keep in mind local regulations on what you can do .

 

I see no reason you can't using a pipe T.
The water will flow to the tube with the spout open, and to the shower with the spout closed.
Put the T as close to the spout as you can with a large pipe to the spout.

 

In my house the valve has a yellow pipe going down that is the same as the yellow pipe going up.
If you do not have the pipe going down you should be able to add a "T" and go to the tub.

 

A faucet that features only shower and no tub spout.

Are you certain that the faucet doesn't have a tub outlet on the bottom of the unit? That's how it is on at least one of my showers.

 

You can buy a bathtub spout with a diverter. Then it's a matter of running the diverted water supply up to a shower head and they make fixtures for that. Electrical we have the NEC Codes, no clue if your location has plumbing codes. Anyway, yes to answer your question with the right hardware. Things look a little like this, only pretty.



Ron

 

Typical shower valve. Left & Right is to the water supply. (hot & cold). Up and down are outlets, and are the same.

 

Shower-only valve :

 

Shower only valve :

Then put in the "T" but put it in as low as possible.

 

Shower-only valve :

I find it strange that the connections are male. That means you can't connect with a typical male pipe thread.

 

Typical shower valve. Left & Right is to the water supply. (hot & cold). Up and down are outlets, and are the same.
View attachment 366083

We have a better image than I came up with.

Ron

Shower-only valve :

View attachment 366093

Yes and for temperature control. Two inlets, one hot and one cold. One outlet for the mix. Next route the mix to either the shower head or the bathtub spout. I showed images but I don't have a blend valve but rather separate hot and cold. What part are you not quite understanding? The answer to your initial post is a yes.

Ron

 

I find it strange that the connections are male. That means you can't connect with a typical male pipe thread.

Copper pipe can be connected with a simple compression nut (crox nut) which mates to a male.