The copper tube need to be Reduce square working with an suitable tubing cutter. Following reducing, the tube need to be reamed to the entire inside diameter leaving no inside burr (Figure nine.three). Tube that is from round prior to flaring ought to be resized back to spherical. Flare fittings, http://valevsandfittings10851.xzblogs.com/18209196/detailed-notes-on-flare-fitting