ASME B16.29-2017 pdf download

ASME B16.29-2017 pdf download.Wrought Copper and Wrought Copper Alloy Solder-Joint Drainage Fittings — DWV.
6.1.2 Pipe. The size designation ofthreaded fitting end configurations defined in Table 2 (Table I-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 84% ofcopper content. 9 LAYING LENGTHS Due to widely varying manufacturing processes, laying lengthdimensionsoffittingsarenotstandardized.Consult the manufacturerforthese dimensions. Suggested dimen- sions, including laying lengths, for various fitting config- urations are shown in Tables 3 through 13 (Tables I-3 through I-13). 10 OVALITY Maximum ovality shall not exceed 1% ofthe maximum diameter shown in Table 1 (Table I-1). The average ofthe maximum and minimum diameters must be within the dimensions shown in the table. 11 THREADED ENDS 11.1 General Fittingthreads shall be righthand, conformingto 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 countersunka 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 cham- fering 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. 13 ALIGNMENT The maximum allowable variation in the angular align- ment ofall openings shall be 5 mm in 1 m (0.06 in. in 1 ft) (0.5%), other than in the direction ofpitch (see section 4).
1 SCOPE This Standard for wrought copper and wrought copper alloy solder-joint drainage fittings, designed for use with copper drainage tube conforming to ASTM B306, covers the following: (a) description (b) pitch (slope) (c) abbreviations for end connections (d) sizes and method ofdesignatingopenings for redu- cing fittings (e) marking (f) material (g) dimensions and tolerances 2 GENERAL 2.1 Convention For determining conformance with this Standard, the convention for fixing significant digits where limits (maximum and minimum values) are specified shall be as defined in ASTM E29. This requires that an observed orcalculatedvalueberoundedofftothenearestunitinthe lastright-hand digitused forexpressingthe limit. Decimal values and tolerances do notimply a particular method of measurement. 2.2 Relevant Units This Standard states values in both SI (metric) and U.S. Customary units. These systems of units are to be regarded separately as standard. Within the text, the U.S. Customaryunits are shown in parentheses orin sepa- rate tables that appear in Mandatory Appendix I. The values stated in each system are not exact equivalents; therefore, it is required that each system of units be used independently of the other. Combining values from the two systems constitutes nonconformance with the Standard. 2.3 References Codes, standards, and specifications, containing provi- sions to the extent referenced herein, constitute require- ments of this Standard. These reference documents are listed in Mandatory Appendix II. 2.4 Quality Systems Guidelines relating to the product manufacturer’s quality s ys tem p ro grams are des crib ed in Nonmandatory Appendix A. 3 DESCRIPTION These fittings are designed for drainage and vent systems only, usingthe solder-jointmethodofconnection. The fitting cups (C) are provided with stops so that the ends of the tube, when assembled, meet the stops. Sketches and designs of fittings are illustrative only. The dimensions specified herein shall govern in all cases. 4 PITCH (SLOPE) All nominal 90-degfittings shall be pitched to resultin a slope of0.20 mm/m (0.25 in./ft) (2%) ofhorizontal tube length with reference to a horizontal plane.