Thanks... That makes sense... Shower was built for a handicapped person. But there is no tub... Water can't bake flow... So why would I need vacuum breaker?
Can I get rid of it and just use a regular elbow?
Drop wall ell for Handheld shower... Has holes in elbow.
For what possible purpose? Sprays cold water as I wait for hot water... Wastes water during shower... Is it OK to change out for a regular non-hole drop Ell?