I've been spending hrs online looking for one I can use to replace the handles in my shower. I've found a few options but need to talk to the guy who last worked on it first. It went from a 2 handle to a 3 handle and I don't know why yet... 2 handles were fine with me. the 3 holes were there tho. I think. I don't know why there is now another knob. And I very plainly told him lever handles... he put in another set of those round clear plastic things. not only gross to look at but to clean and on my poor hands.

Hopefully a wall directly behind this faucet wall will have an access of some sort to get at the piping. If your house is 50 yrs. old, you will probably have galvanized pipe. If the shower is on the first floor, it would probably be wise to change the piping from the cellar up to this fixture with copper because you will probably end up having to use some copper in the change over. One of the major companies (either Delta or Moen) makes a large plate that will fit over a hole that you would have to make to change the faucet from the tub side. The company that makes the plate has a faucet that fits perfectly into this plate. The Moen plate is called a "remodeling cover plate" and the part # should be #1920. I don't have a Delta number. Even with this, you have to be careful and not make a hole any larger than the plate will cover up. If you have ceramic tile on the shower walls, then the job gets even trickier. It would probably be a whole lot easier if you could do most of the work from the backside.

I work in plumbing supply...I'd say just get a new valve as well. Tracking down Pegasus parts is a task even Quixote wouldn't take on! Pegasus is also pretty low quality...you're going to end up replacing it anyway, save yourself the hassle and money of looking for the part. Go to a wholesale plumbing supplier (not Home Depot or Lowe's). Get a Delta or Moen. (Although Delta is fine at home centers). You'll be better off, and if you ever have to find replacement parts again it will be much much easier

"Why don't you guy's - roof35 and Mongo come into the 21st century?" geoffrey, seriously? No need to throw bricks. I addressed transitional applications in this paragraph: "Is a new thermostatic shower valve right the easiest way to control temp? Probably. But it's not the only way. Especially in remodels in older buildings. Opening up walls to change a valve can result in changes to plumbing, which can lead to all sorts of issues. When remodeling in older buildings or houses, there certainly are different strokes." Not everyone wants a gut remodel.Not everyone wants to open up a tiled wall to install a new valve. Not everyone want to disturb original plumbing inside of a wall. Not everyone can, for myriad reasons. But in old construction, you can go from having no scald protection to having scald protection by installing an in-line thermostatic valve. And they work just fine. Down the road when a true remodel occurs, then tile can be popped, or complete walls can be opened up, and a shower valve with anti-scald protection can be installed. If you want different water temps in different locations, you can do so. It's not that hard to do. It might hurt to think about it, but with "modern construction" what scald protection do you have at a kitchen sink? None. A bathroom sink? None. The only place you have it is in a shower/tub. If you install an "ancient decrepit" whole-house valve, precious children and Alzheimer-suffering old folk across the globe will have scald protection wherever hot water can flow.