Slip-on flanges are slipped about the pipe and welded to deliver power and forestall leakage. This flange is less costly than a weld neck and necessitates considerably less precision when chopping pipe to size. A double-tapped bushing is much more compact than the usual reducer, but not as flexible. Even http://johnnypgwlz.getblogs.net/16727386/facts-about-valves-and-fittings-revealed