Aug 6, 2022 #2 UFT12 Mechanical Mar 16, 2016 318 Air vent valve should be preferably on top of mains to be able to vent more air. The valve should be easily accessible. Is it located at a reasonable height? Are you within the limits for unsupported pipe length from the last hanger? Upvote 0 Downvote
Air vent valve should be preferably on top of mains to be able to vent more air. The valve should be easily accessible. Is it located at a reasonable height? Are you within the limits for unsupported pipe length from the last hanger?
