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Intalling a Shower Water Valve

position shower valveI want to show you today how to install a shower valve in this fiberglass shower. So one of the first things we want to do is determine the position of the valve itself, inside of the the shower. So by doing that, you want to check for one thing inside of the wall, make sure you’ve got the clearance of the room, there’s no pipes in the way, electrical, that sort of thing.

Determine your width, your height off the bottom, which generally is around forty-five inches of the base of the shower and get a mark there and your width, in this particular one I am going at about fifteen. So the valve we are installing today looks like this. This is the piece that’s behind the wall, the brass area you won’t even see after. On the face, what you are going to see inside, obviously, is the big chrome plate and the handle and all that.

This plaster guard slides over top here and because we have a thin wall shower, this is quarter inch, we need to have this plaster guard on the back side, so we need either drill a hole here for this to come through and it could be a little larger, because we have a couple of screws we have to put in here, but it has to be small enough so this plate won’t come through the hole.

So the plate is about four and three quarter inches, we are going to drill about a three inch hole, right here in our mark that we just determined. Before we drill the big hole, we are going to drill a pilot hole through here. I’ve already temporarily installed the piece of blocking back there and I want to drill a pilot hole through the shower and back into that blocking, just to get a mark in it.

drilling showerI can explain that once we actually get to that part. I am going to drill the hole here, goes right through and through the shower and into that block. Now that we’ve got our pilot hole, I can take the larger drill bit, the three inch I was talking about, three and a quarter and we are going to go where that pilot hole was and we are going to drill just through the shower.

You want to go nice and easy, so you don’t tear everything up and make a mess, you get through the fiberglass, like so and drill right through. Just like so. Okay. With that hole there, that allows our valve, when it’s inserted, to fit through there, so we can actually adjust it. Okay. So here is the block that I had temporarily in place here, when we did the pilot hole.

shower valveWhat the pilot hole does is give me a position here, so that when the valve goes in, and we put this block in to help hold the valve, this little knob on the back of the valve basically, fits in that hole and keeps it from moving around. So that’s what the block was all about. Once we had the pilot hole, I just drilled an appropriate size hole to match up this, which happened to be one inch.

The block we don’t need right away, put it out of the way. You can see out three and a quarter inch hole that we drilled here through the shower itself and next thing I am going to do is put this push fit fittings on the valve. So the valve it’s just a shower, so we’ve got our hot and our cold and one leading up to the actual shower head.The push fittings, they thread right in here and ready for the Aquapex or Pex pipe or whatever you are using, plastic pipe.

Actually, these would work with copper as well. So I’ve got to put some Teflon tape on these fittings, so I am just getting that started on there, I’ll go around about three times. Pull that off and this one is ninety degree bend. Depending on your situation, where your water is coming from, you might want straight ones or whatever. My water is coming from up top, so I’ll get that started in there. I have another one for the other side.

This one goes over here, we’ll tighten these up in a minute. This is a straight one that’s going to go up for the shower line. So this one goes in here. We’ll take our crescent wrench, tighten this up until is pretty snug and tighten these at ninety degrees. I want them facing up, so I need to make sure I got the it up like that. I don’t think I can get another turn on that one. So this is the back side of our valve that’s going to go inside there.

This post was getting kinda long, so I decided to break it into 2 parts. Stay tuned for Part II…

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