Unions are utilized instead to flanges connection in low-stress small bore piping in which dismantling from the pipe is required far more typically. A double-tapped bushing can be a fitting which serves as being a reducer. It's a sleeve comparable to an in depth nipple, but is threaded on both http://gunnerxsldt.full-design.com/The-valves-and-fittings-Diaries-28105847