ASME B16.23:2016 pdf download

ASME B16.23:2016 pdf download.Cast Copper Alloy Solder Joint Drainage Fittings: DWV
1 SCOPE
This Standard establishes specifications for cast cop- per alloy solder joint drainage fittings, designed for use in drain, waste, and vent (DWV) systems. These fittings are designed foruse withseamless copper tube conform- ing to ASTM B306, Copper Drainage Tube (DWV), as well as fittings intended to be assembled with soldering materials conforming to ASTM B32, or tapered pipe thread conforming to ASME B1.20.1. This Standard is allied with ASME B16.29, Wrought Copper and Wrought Copper Alloy Solder Joint Drainage Fittings — DWV. It provides requirements for fitting ends suitable for soldering. This Standard covers (a) description (b) pitch (slope) (c) abbreviations for end connections (d) sizes and methods for designing openings for reducing fittings (e) marking (f) material (g) dimensions and tolerances
2 GENERAL
2.1 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. Customary units are shown in parentheses or in separate tables that appear in Mandatory Appendix I. The values stated in each system are not exact equiva- lents; 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. 2.2 References Standards and specifications adopted by reference in this Standard are shown in Mandatory Appendix II, which is part ofthis Standard. Itis notconsidered practi- cal to identify the specific edition of each standard and specification in the individual references. Instead, the specific edition reference is identified in Mandatory Appendix II.2.3 Quality Systems Requirements relating to the product manufacturer’s quality system programs are described in Nonmandatory Appendix A.
3 DESCRIPTION
(a) These fittings are designed for drainage and vent systems using the solder joint method of connection. The fitting cups (C), are provided with stops so that the ends of the tube, when assembled, meet the stops, thereby forming essentially smooth passageways. (b) The sketches and designs offittings are illustrative only. The dimensions specified herein shall govern in all cases.
10 INSPECTION TOLERANCE
10.1 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 or calculated value be rounded off to the nearest unit in the last right-hand digit used for expressing the limit. Decimal values and tolerances do not imply a particular method of measurement. 10.2 Linear Dimensions DWV fittings covered by this Standard shall conform to the laying lengths specified in Tables 4 through 56 and Tables I-4 through I-56. An inspection tolerance, as shown in Table 1 or Table I-1, shall be allowed on center- to-shoulder, center-to-threaded end, and shoulder-to- threaded end dimensions on all fittings having internal solder (cup) ends; and on center-to-solder end, solder end-to-shoulder, and solder end-to-threaded dimen- sions on all fittings having external solder (fitting) ends. The largest opening in the fitting governs the tolerance to be applied to all openings. The inspection tolerance for laying length dimensions A, B, and C (in Table 4 or Table I-4) shall be double those shown above, except the minus tolerance applied to couplings; dimension A shall not result in a dimension less than 2.3 mm (0.09 in.). 10.3 Ovality Maximum ovality shall not exceed 1% of the maxi- mum diameters shown in Table 2 or Table I-2. The aver- age of the maximum and minimum diameters shall be within the dimensions shown in the table. 10.4 Alignment The maximum allowable variations in the regular alignment of all openings shall be 5 mm/m (0.06 in./ft).