May I ask for what reason/purpose the two pipes on the right are not connected end to end but rather have endstops and then are connected a bit in?
Plumbing
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If you have a question such as "does this look correct?" please include the code your area adheres to. If you're not sure please include state/province/country you're in. Codes can vary state to state and what's wrong in one area may be perfectly acceptable in another.
Just as codes vary, prices do too. That's why we won't discuss any pricing because there's so many factors that can't or shouldn't be conveyed to strangers over the internet.
Are you talking about the ones that are on a loop? That are tied into the rightmost valve? If so those are for a body spray system.
No, was thinking about these joints and endpoints.
Ahh those are just air chambers which are still required in most of the locations that I work.
Aha, never heard of those before. Learned something new today, thanks!
For others in the dark: https://plumbingreview.net/what-is-an-air-chamber-in-plumbing/
The ones that are in the pictures of the article you sent are actually effective, the ones that we use that's acceptable by code still is just a 12 inch pipe with a cap. They don't really work though because over time the air pockets full up with water so they basically become useless.