Old 3 handle tub/shower faucet replacement

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PP_

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I wanted to change my old 3 handle faucets (I do not see the make)
to a newer one without changing the valves. Or, would you guys recommend
a complete replacement, including the valves? If I get the stems out,
I could post a picture and that would help to identify at least the make.

In my initial attempt to loosen the stem (it fits a 29/32" socket), I am unable to break it
loose.
Here is what I did:
1) Removed the handles
2) Sleeves and flanges
3) Tried to use a socket to break loose the stem

I did apply some torque, but did not want to damage by using too much force.
I have tried WD-40 and will try it out again. What are the recommended methods to
break loose the stem. Does heating with a propane torch help?

To access the valve, there is a bathroom vanity that I have to remove, and that involves
a bit of work.
Thank you all!
 

Terry

Plumbing contractor
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Check this link here with information on dealing with a replacement for a three handle valve.

https://terrylove.com/forums/index.php?threads/moen-tl2368ep-shower-remodel-trim.61164/

moen-tl2368ep-replacement-04.jpg
 

PP_

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Thank you, Terry.
I was able to get to access the valves through the vanity.
Please see the attached image. I wanted to make sure I know
the connectors used, before trying to dismantle the old valve system.
Is "1" in the image a 1/2 in. copper fitting x MIP Fitting Adapter?
What are "2" and "3" fittings called? What are the best ways to
dismantle a connection with "2", "3" and a 1/2 in. GI pipe below.
(The GI pipe below "3" has corrosion and I plan to replace it).
Just below the GI pipe is a 1/2 in. copper FIP female adapter fitting.
Please correct me and provide me your valuable tips.
Thanks a lot :)

My_connections_.jpg
 
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