Bulkhead Fitting A threaded fitting installed in a side wall of a container or tank. Bulkhead fittings are typically installed near the bottom of a tank and are often used to manifold tanks together or to provide a water drainage point. See also PEI/RP700. By rhys|2014-10-09T14:08:04+00:00October 9th, 2014|Comments Off on Bulkhead Fitting Share This Story, Choose Your Platform! FacebookTwitterRedditLinkedInWhatsAppTumblrPinterestVkXingEmail About the Author: rhys