Welcome to the forum! Most new AS have one built in, so check your owner's manual for confirmation. Many folks recommend also using an inline pressure regulator, and filter, at the campground hose bib:
https://www.amazon.com/Camco-40055-B...sure+regulator
https://www.amazon.com/Camco-40043-T...e+filter+camco
A belts and suspenders kind of thing . . .
Good luck and have fun!
Peter
PS -- At rural campgrounds where the water system may be from a private well, the use of an inline filter is more important IMO.
Linear Mode
