A double-tapped bushing is a lot more compact than a reducer, but not as adaptable. Whilst a double-tapped bushing incorporates a smaller sized woman thread concentric to a larger male thread (and so partners a lesser male close to a bigger female), a reducer may have large and smaller finishes http://gregorycmtbh.affiliatblogger.com/24516474/the-ultimate-guide-to-valves-and-fittings