ASME B16.22:2012 pdf download

ASME B16.22:2012 pdf download.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings
1 SCOPE
This Standard establishes specifications for wrought copper and wrought copper alloy, solder-joint, seamless fittings, designed for use with seamless copper tube conforming to ASTM B88 (water and general plumbing systems), B280 (air conditioning and refrigeration ser- vice), and B819 (medical gas systems), as well as fittings intended to be assembled with soldering materials con- forming to ASTM B32, brazing materials conforming to AWS A5.8, or with tapered pipe thread conforming to ASME B1.20.1. This Standard is allied with ASME B16.18, which cov- ers cast copper alloy pressure fittings. It provides requirements for fitting ends suitable for soldering. This Standard covers the following: (a) pressure–temperature ratings (b) abbreviations for end connections (c) size and method of designating openings of fittings (d) marking (e) material (f) dimensions and tolerances (g) tests
2 GENERAL
2.1 Units of Measure The values stated in either SI (metric) or U.S. Customary (in.-lb) units of measure shall be regarded separately as standard. Within the main text, SI units are given. For convenience, the customary units are shown in Mandatory Appendix II. The values stated in each system are not exact equivalents; therefore, each system shall be used independently of the other. NOTE: Combining values from the two systems may result in nonconformance with the Standard. 2.2 References Standards and specifications adopted by reference in this Standard are shown in Mandatory Appendix III. It is not considered practical to identify the specific edition of each standard and specification in the individual ref- erences. Instead, the specific edition reference is identi- fied in Mandatory Appendix III.
3 PRESSURE–TEMPERATURE RATINGS
3.1 Rating of Fittings and Joints The internal pressure–temperature rating for a solder- joint system is dependent upon not only fitting and tube strength, but also composition of the solder used for the joint and selection of valves and appurtenances. 3.1.1 Solder Joints. Pressure–temperature ratings for solder joints to the dimensions of Table 1 (Table II-1), made with typical commercial solders, are given in Table I-1 (Table II-4). The internal pressure–temperature rating of the sys- tem with solder joints shall be the lowest of the values shown in Table 2 (Table II-2) and Table I-1 (Table II-4) and those of the tube, valves, and appurtenances. 3.1.2 BrazeJoints. Pressure–temperature ratings for braze joints to the dimensions of Table 1 (Table II-1), made with typical commercial brazing materials, shall be considered equal to the values given in Table 2 (Table II-2). The internal pressure–temperature rating of the sys- tem with braze joints shall be the lowest of the values shown in Table 2 (Table II-2) and those of the tube, values, and appurtenances. 3.2 Bursting Strength Fittings manufactured to the Standard shall have an ambient temperature bursting strength of at least four times the 38°C (100°F) internal pressure rating as shown in Table 2 (Table II-2).
6 MATERIAL
(a) Fittings shall be made from copper UNS Nos. C10200, C12000, or C12200 or copper alloy UNS No. C23000, for which allowable stresses are found in ASME B31.1, ASME B31.9, or ASME Boiler and Pressure Vessel Code, Section II — Materials. (b) Other coppers and copper alloys are permitted, provided they meet the chemical requirements of 84% minimum copper and 16% maximum zinc and provided the fittings produced from the copper alloy meet all the mechanical and corrosion-resistantproperties for the end purposes of the fittings. The composition of the copper alloy shall contain nothing that will inhibit join- ing to the tube or to other fittings.