[Motor31]

The actual shower hose has no vacuum break in it. It is just a polymer hose connecting the water valves to the shower head. You can get a replacement at an RV supply store or some hardware stores. I replaced the RV shower head and hose in our rig years ago with a hardware store shower head. Just pick one that is a reduced flow to help save water. Ours is also one of the so called water massage styles with multiple options for spray.

I replaced the outside shower hose this year. The fitting where it connect to the shower head had cracked, simple cheap plastic. It took all of 30 seconds to replace with one from the hardware store I had on hand. Heck even wally world has the same kind of stuff in their shower section. Most of the stuff in RV's ain't rocket science or DRV wouldn't even figure out how to put air in the tires.