Need to replace a moen tub-shower valve without tearing down a wall. Can you help? Where can I get the valve?

Hi,

Trust me... something broke or it would not have fallen into pieces...

Replace the spout!!

heatman101

Only two possibilities here the diverter tub spout is not open all the way to let water to the tub only or the shower valve is installed up-side-down.

http://www.moen.com/shared/pdf/l82691pt.pdf

did you install the valve sideways or upside down? or is there a blockage in the hot line? the valve may be pressure balanced so if there is no water then there may be a blockage on one side. did you solder the valve? if so did you remove the cartridge? when you replaced the cartridge did you grease it with non-petroleum grease?

Call Moen directly. They will ship what you need to your door, for free.

The faucet was installed upside down.
The shower riser pipe in the wall is to short( the distance between the faucet and shower head).
One of the biggest problems is if your shower faucet was installed with Pex pipe to the tub spout. Pex pipe will restrict the flow and force the water back up and out of the shower head.
The tub spout must be piped with at least 1/2 brass pipe nipples and fittings, or 5/8 OD. copper pipe and fittings.
Hope this helps, if you further questions please let us know.

gotta cut open the wall and take a look---you don't want mold and water continuously present inside your walls---think creeping death!

it is used for keeping the valve from coming thru the big hole when you tighten up the main cover,...it's to go on the back of the shower wall,..you don't have to use it if your valve is secured enough via pipe clamps and/or the like. good luck

the diverter is stuck. you have to move it up and down to free it up. the diverter is the mechanism attached to the tub spout that switches the water from shower to tub. you may also need a new diverter if fiddling with it doesn't work.

The shower valve is clearly mark "UP" when you look at it from the front.

The valve is in upside down. Sounds like the shower head runs all the time and thats what fills the tub? The valve needs to be flipped OR the diverter in the valve needs to be switched to the other side of the valve. If this is a one handled valve it is installed upside down. UP is indicated on the valve.

The valve can be reused just turned over.