Gauge for coupling component.

摘要

A gauge for fittings of the type including a coupling nut (110) having a threaded internal opening and adapted to encircle a tubular member (C) and ferrules (122,124) positioned on the tubular member, used to determine the pull up of the ferrules and the swaging of the tubular member. The gauge includes an indicating unit (A) having a readout (14) for showing whether the swaging of the tubular member is within tolerances. A piston (90) is movably mounted on the indicating unit (A) and is operatively connected to the readout. The piston (80) has a body with a bore (94) and an external threaded area circumferentially of the bore to threadedly engage the threaded internal opening of the coupling nut (110) carried on the tubular member (C). The piston (90) further includes a flared section (96) within the bore for aligning the tubular member with the bore and for limiting the extent of movement of the tubular member into the bore. A master (D) is provided for calibrating the gauge.