Quarter Turn Ball Valve A shutoff valve operated by a handle that rotates 90 degrees to move the valve between the open and the closed position. See also PEI/RP700. By rhys|2014-10-22T14:00:08+00:00October 22nd, 2014|Comments Off on Quarter Turn Ball Valve Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkXingEmail About the Author: rhys