PEX Water Installation for Bathtub, Shower Panel, and Built-in Washbasin Faucet: Design Review

Hello,

I am asking for your opinion on the installation shown in the photo.

The purpose of the installation is to supply water to the bathtub (drain in the center, faucet in the center of the bathtub), to the shower panel (pipes going upwards on the left) and to the built-in washbasin faucet.

I used PEX pipes and twisted fittings. I wonder if this is a good solution and if I designed it well. There is a separate outlet for water to the washbasin, but I decided to do it from one source so that I could easily shut off the water using the valves.

For several days, the water has been turned on all the time and nothing is leaking. Water only leaked on the connection to the flush-mounted faucet (not enough Teflon, I gave more and it's ok).

I am going to put the tubes and connectors in a thermal insulation tube. The wall is made of red brick, so no contact with concrete anyway ... unless the connectors cannot even come into contact with plaster / putty.

I am asking for opinions and possibly advice.

Personally, I never use twisted connectors, which are later "hidden" in the wall or the floor, I choose pressed connectors. Please note that when you open or close the battery, a so-called water hammer, which may cause loosening of nuts on screwed couplings after some time and, consequently, flooding of the apartment and many other problems.

There is a rule that in pexsa twisted connectors are only exposed to view. You might try to tighten these tees

Abbys wrote:

I used PEX pipes and twisted fittings. I wonder if this is a good solution and if I designed it well.

IMHO no. PEX is ideal for manifold installations. In the boiler room, you close all the circuits and give the shut-off valves. You do not use any hoses with wash basin taps, elbows or tees, you only lead a cheap 16mm flexible tube to the tap itself. Crimp fittings without access only. Where it is impossible (there is no space for a manifold or the number of pipes) to make a manifold installation, I provide welded PP. Glued systems do not seem to have any advantages (a Chinese welding machine is cheaper than a tube of glue). Copper for drinking water is not recommended. Galvanized steel is ideal for installations subject to mechanical stress (garden faucet, pool shower, etc.).