ASME B16.23:2021 pdf download

ASME B16.23:2021 pdf download.Cast Copper Alloy Solder Joint Drainage Fittings: DWV
1 SCOPE
This Standard establishes specifications for castcopper alloy solder joint drainage fittings, designed for use in drain, waste, and vent (DWV) systems. These fittings are designed for use with seamless copper tube conforming 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 re- ducing 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. In this Standard, the U.S. Customary units are shown in parentheses. 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. 2.2 References Standards and specifications adopted by reference in this Standard are shown in Mandatory Appendix I, whichispartofthis Standard. Itisnotconsideredpractical to identify the specific edition ofeach standard and spec- ification in the individual references. Instead, the specific edition reference is identified in Mandatory Appendix I.
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 orcalculatedvalueberoundedofftothenearestunitinthe lastright-hand digitused forexpressingthe limit. Decimal values and tolerances do notimplya particular method of measurement.10.2 Linear Dimensions DWV fittings covered by this Standard shall conform to the layinglengths specified in Tables 6-4 through 6-56. An inspection tolerance, as shown in Table 6-1, shall be allowed on center-to-shoulder, center-to-threaded end, and shoulder-to-threaded end dimensions on all fittings havinginternal solder(cup) ends; and on center-to-solder end, solder end-to-shoulder, and solder end-to-threaded dimensions on all fittings having external solder (fitting) ends. The largest opening in the fitting governs the toler- ance to be applied to all openings. TheinspectiontoleranceforlayinglengthdimensionsA, B, and C(in Table 6-4) shall be double those shown above, except the minus tolerance applied to couplings; dimen- sion A shall not result in a dimension less than 2.3 mm (0.09 in.). 10.3 Ovality Maximum ovality shall not exceed 1% ofthe maximum diameters shown in Table 6-2. The average of the maximum and minimum diameters shall be within the dimensions shown in the table. 10.4 Alignment The maximum allowable variations in the regularalign- ment of all openings shall be 5 mm/m (0.06 in./ft). 10.5 Gaging of Solder Joint Ends (a) Standard Gaging Method ofSolder 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 6-2. (b) Optional Gaging Method ofSolder 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.