Identity Moen shower faucet with 1200

30 yr old house. Faucet leaking inside wall. Anyone know the model number? And replacement parts? See four photos

 

That is just an old Moen tub and shower valve. A GOOD Moen tub and shower valve. The valve is not leaking. You may have a pipe leaking or you may have a joint leaking but the valve is not leaking. Where and when do you see water?

Moen will provide you with a free cartridge, which is the only moving part. Call 1 800-BUY MOEN (1-800-289-6636).

 

It looks like Moen Chateau trim T470
http://www.moen.com/chateau/chrome-standard-valve-trim/_/R-BULK%3AT470

 

Looks like cartridge leak. Probably only when shower is on. Use a Moen 1200B cartridge replacement.

 

See photo for where its leaking - shows drop on flange inside wall - drips at good rate when water is on.

 

Remove that chrome sleeve. It just pulls off. Look to see if the leak is occurring around the cartridge. If not there would have to be crack in the valve body just above the drop of water. Highly unlikely but I suppose it could happen.

 

I always thought the B was for brass. I just learned something new.

 

Just pulling the chrome sleeve doesn't move it. Any tricks here? Tools? Pull harder? Solvent?

 

Grasp it with a pair of needle nose pliers and pull. You can try any solvents you have . It is just a thin chrome sleeve. If you scar it up it is easily replaced and not expensive. You will probably want to replace it just for looks anyway.

 

All good now. But had a few twists to it. Used included white plastic to get cartridge spinning easily. Then used puller tool to pull the old 1200 cartridge. Only pulled the center out leaving the body installed. So followed online suggestion and tapped the body with a 1/2" thread. Cut very easily in the brass body 3/4" deep. Then threaded in long rod with "pulling" nut and washers. Tightened nut down and cartridge body came right out. Need to break off the small body tabs before starting so washers don't sit on them and stop body from moving. So little concerned at first when body separated but all worked out. see photos

 

Looks like that opening is big enough to replace your entire plumbing system through it - including water heater.