Jeffry, you are absolutely correct about the Moen instructions/cartoon calling for mounting the plaster guard flush with finished wall. My daughter had her bathroom remodeled 2 years ago and used a Moentrol valve that was installed according to the instructions provided. The valve stuck out too far just like that photo from the OP. Unfortunately it was too late to change the install without tearing out tile and there was no access from the other side of the tiled wall. It looked ridiculous. I called Moen and they blamed it on installer error but they didn't hesitate to send a adapter escutcheon piece at no charge. Supposedly it is an $80 part. I think by giving it to us free they are admitting without verbalizing it that they are in the wrong. My question is, why haven't they revised their instruction sheet. Here is how it looks with the added piece.

We are progressing with our doorless shower. The wall is framed in. We have installed a Moen 3330 3-function transfer valve with a pipe extension for the hand-held slide bar. Please advise on whether this is the best placement for the valve and water supply. We're not sure if we should place the slide bar on stud #2 or #3 and where to put the water supply valve. We plan to use the hand-held shower to shower our daughter who is disabled. She will be seated when I shower her. We need to decide whether to install a corner bench in the back near the #3 studs or use a portable bench in the center of the shower closer to the # 1 stud. If we do the corner bench and place the slide bar on the #3 studs, I wonder if I will get soaked by the water coming toward me. The black line shows where the bench would be. If we go with the portable bench, we could place it in the center where the wall would stop the water from coming out. We could place the slide bar on the #2 stud so the water is flowing away from the doorway. In that case, should we move the valve a few inches to the left so the slide bar isn't as close to the valve? Would it look strange to have the power supply on one side of the valve and the slide bar on the other side? Since we can't afford to purchase the hand-held and slide bar yet, I can't experiment to see how it would look and if the hose would hang properly. Any advice would be appreciated. The bottom photo shows the type of hand-held shower head that I am considering. (I like the way it extends out unlike others that seem to stand up

Unless I'm in total irrational love with a house to the point I'm ready to remodel right away etc-I'm going to pass on a house that doesn't have a tub, and especially in the master. I have specific concerns that make having a tub a necessity for me. I use it every day. Together with this, I realize that most of population don't have my concerns. Hey, I didn't have them myself ten years ago)) Some things don't come to mind until we encounter them. Yet, sometimes they do happen. In any case, I'd be wary to get rid of all tubs in a house. It definitely hurts the resale. I can think of many many occasions when a tub can be very useful, or become very useful, to people who hadn't used or preferred it before.

Thanks a lot for all valuable information. Actually I noticed one thing last night, when water is flowing thru the down spout, it makes more noise than when water flowing thru the shower head. @nancyinmich Oh yes, I did not even think about that. The reason I thought about the spray foam is, it could expand and fill in the gaps, and I just have a make a tiny hole to spray. But I believe, if I have to install insulation batts, I probably have to cut the drywall, right? The other side is hall, and the walls have texture, (which I don't like even a bit), so it would be hard to cover it all up. :( How about the loose fill insulation? I have watched videos about this. But I am afraid, the insulation may be fill in all the gaps, especially with the water valve. @Jake The other two bathrooms are very silent, both from the bathroom and the other side. Again, likely because of insulation. The bathroom that makes noise, the sound is loud both in side bathroom and other side too, which is hall/kitchen. And this bathroom is right in the middle of the house, so the sound is also audible from the living room. If you think there is some problem with the valve itself, how can I narrow it down? Does it leak water inside the wall? Shower works fine with good pressure like other bathrooms. I also wish I would not have to open the wall anytime soon. If not the spray insulation, what other insulation would you suggest? @ionized_gw That's a good place to start. @Bruce, Since I want to fill up the space between two studs, I was thinking of using the gaps and cracks. My idea is to , make two small holes, one below the valve, and one above the valve. First spray below then valve, and then spray above the valve. I don't plan to full up the entire space between the studs, but just give enough insulation around the valve to make it quite and sound proof. I am still trying to figure out if the valve is bad, or is it just insulation like my builder suggested. @Austin Air companie Thanks for your input. What's the best way to figure out if the noise is because of the water hammer? It doesn't happen in other bathrooms. Also, the noise is worse when water flows thru the down spout compared to water flowing thru the shower head. Could it be because if the valve?