ASME B16.29-2017 pdf free

ASME B16.29-2017 pdf free.Wrought Copper and Wrought Copper Alloy Solder—Joint Drainage Fittings—DWV.
6.1.2 Pipe. The size designation of threaded fitting end configurations defined in Table 2 (Table 1-2) corresponds to thread sizes defined in ASME B1.20.1.
6.2 IdentificatIon
Fittings shall be identified by the nominal size of the openings in the sequence illustrated in Figure 1.
7 MARKING
Each fitting shall be marked permanently and legibly with the manufacturer’s name or trademark and with DWV (to indicate drain.waste.vent).
8 MATERIAL
Fittings shall be made of wrought copper or wrought copper alloy material having not less than 94% of copper content.
9 LAYING LENGTHS
Due to widely varying manufacturing processes. laying length dimensions of fittings are not standardized. Consult the manufacturer for these dimensions. Suggested dimensions, including laying lengths, for various fitting configurations are shown in Tables 3 through 13 (Tables 1-3 through 1-13).
10 OVALITY
Maximum ovality shall not exceed 1% of the maximum diameter shown in Table 1 (Table I-i). The average of the maximum and minimum diameters must be within the dimensions shown in the table.
11.1 General
Fitting threads shall be right hand, conforming to ASME B1.20.1. They shall be American National Standard taper pipe threads (NPT), except for slip-joint ends, which shall have American National Standard free-fitting straight mechanical pipe threads (NPSM).
11.2 Chamfer
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. Countersinking and chamfering shall be concentric with the threads. The length of threads shall be measured to include the countersink or chamfer.
11.3 Threading Tolerances
11.3.1 Internal Threads. Variations in NPT internal threading shall be limited to one turn large or one turn small from the gaging notch when using working gages. The reference point for gaging is the starting end of the fitting, provided the chamfer does not exceed the major diameter of the internal thread. When a chamfer on the internal thread exceeds this limit, the reference point becomes the last thread scratch on the chamfer cone.
11.3.2 External Threads. Variations in NPT external threading shall be limited to one turn large or one turn small from the gage face of ring when using working gages. The reference point for gaging is the end of the thread, provided the chamfer is not smaller than the minor diameter of the external thread. When a chamfer on the external thread exceeds this limit, the reference point becomes the last thread scratch on the chamfer cone.
12 DESIGN OF THREADED ENDS
External and internal threaded ends of fittings will be furnished with a polygon to facilitate installation.ASME B16.29 pdf free download.