ASME B16.23:2016 pdf free download

ASME B16.23:2016 pdf free download
ASME B16.23:2016 pdf free download.Cast Copper Alloy Solder Joint Drainage Fittings: DWV
10.5 Gaging of Solder Joint Ends
(a) Standard Gaging Method of Solder Joint Ends. The standard method of gaging the diameter tolerances for male and female ends shall be by the use of plain plug and ring gages designed to hold the product within the limits established in Table 2 or Table I-2.
(b) Optional Gaging Method of Solder Joint Ends. For gaging the diameter tolerance of male and female ends, the manufacturer may use direct reading instruments instead of ring and plug gages as specified in (a). When gaging the diameters of male and female ends, using direct reading instruments, refer to para. 10.3.
11 THREADED ENDS
11.1 General
Threaded ends shall conform to the dimensional requirements contained within Table 3 or Table I-3. Fitting threads shall be right-hand, conforming to ASME B1.20.1. They shall be taper threads (NPT) except for slip joint ends, which shall have straight pipe threads (NPSM).
11.2 Thread Dimensions
All internal threads shall be countersunk a distance not less than one-half the pitch of the thread at an angle of approximately 45 deg with the axis of the thread. All external threads shall be chamfered at an angle of 30 deg to 45 deg from the axis. This facilitates joint assembly and thread protection. Countersinking and chamfering shall be concentric to the threads. The length of threads specified in all tables shall be measured to include the countersink or chamfer.
11.3 Threading Tolerances
Tapered pipe threads (NPT) shall be checked by use of working plug or ring gages either standard or limit types. Gages shall be threaded hand tight. The reference point for gaging internal taper threads, the plug gage, shall be screwed hand tight into the fitting. Internal product threads depend upon the chamfer diameter. When the internal chamfer diameter exceeds the major diameter of the internal thread, the reference point shall be the last thread scratch on the chamfer cone. Other- wise, when the internal chamfer diameter does not exceed the major diameter of the internal thread, the reference point shall be the end of the fitting. On the external thread it shall be flush with the end of the fitting.