Ball Valve Problem
Ball Valve Problem
(OP)
Has anyone ever encountered a consistent stress failure with threaded ball valve bodies cracking through the stamp on the hex? If so, what brand(s) and what was determined to be the cause of the failure?





RE: Ball Valve Problem
Those are probably also the low-end WOG (Water-Oil-Gas) valves. ANSI (Now ASME) valves have to meet more stringent material properties and thivkness specifications. See ASME B16.34 and B16.10 for code requirements.