I am plumbing a small bathroom. The total number of supply lines is five -- shower (hot and cold), sink (hot and cold) and toilet.
I want to place hammer arrestors but I'm not sure if I need 5 hammer arrestors, or if I can just place two for the sink, or if I should place them as the pipes enter the room, and protect the whole room that way.
All the diagrams on the internet indicate placement as close as possible to the faucet.
The total length of pipe from where the pipe enters the room until the furthest faucet is only about 10 feet. Total including verticals.
I'm attaching my poorly drawn sketch of the plumbing. The arrestors are "orange". Should they g near each tap or can they go as the pipes enter the room?
EDIT: Photo of the finished work