From time to time, we are re-posting well-received or particularly valuable articles that have previously run on VALVEMagazine.com so that those who might have missed them will be able to catch up on the best of the best. This article, “Ball Valve Repair 101” initially ran on June 23, 2014.
Metal-seated ball valves are industrial process valves commonly specified for use in mining, chemical plants and non-refinery settings. These valves are used in applications that demand critical isolation, high temperature, high pressure, corrosion, erosion/abrasion and solids (slurry or otherwise). It is these processes that drive the need for metal-seated quarter-turn valves. End users who choose metal-seated ball valves require quick actuation and repairability. The ball and seat set can be repaired in several types of ball valves including: floating ball valves, trunnion ball valves and spring-loaded floating ball valves.