ASME B16.22:2018 pdf free download

ASME B16.22:2018 pdf free download.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings.
3 PRESSURE-TEMPERATURE RATiNGS
3.1 RatIng of Fittings and Joints
The internal pressure—temperature rating for a solder- joint system is dependent on not only titting 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 ofTable 3.1.1 -1, made with typical commercial solders, are given In Table I-I.
The internal pressure-temperature rating of the system with solder joints shall be the lowest of the values shown in Table 3.1.1-2 and Table I-I and those of the tube, valves. and appurtenances.
3.1.2 84-ale Joints. Pressure—temperature ratings for braze joints to the dimensions of Table 3.1.1-1, made with typical commercIal brazing materials, shall be considered equal to the values given in Table 3.1.1-2.
The internal pressure-temperature rating of the system with braze joints shall be the lowest of the values shown in Table 3.1.1-2 and those of the tube, valves, and appurtenances.
3.2 BurstIng Strength
httings manufactured to the Standard shall have an ambient-temperature bursting strength of at least 4 times the 38°C (100°F) internal pressure rating as shown in Table 3.1.1.2.
4 TERMINOLOGY
4.1 Size
The size of the fittings shown in Table 3.1.1-1 corresponds to standard water tube size as shown in ASTM B88. The size of the threaded ends corresponds to nominal pipe size as shown in ASME B1.20.L
Fittings are designated by the size of the openings in the sequence illustrated in Figure 4.1-1.
4.2 Abbreviations
The following symbols are used to designate the type of fitting end:
C = solder.jolnt fitting end made to receive copper tube diameter (female)
F = Internal ANSI standard taper pipe-thread end (female) NPTI
4.3 Definitions
out-of-roundness: maximum measured diameter minusminimum measured diameter.
ovality: elliptical condition associated with out-of-roundness.
5 MARKING
Each fitting shall be permanently marked with themanufacturer’s name or trademark in accordance _withMSS SP-25.Marking on fittings smaller than size 1horon any fitting where it damages soldering surfaces isnot required.
6 MATERIAL
(a]Fittings shall be made from copper UNS No.C10200,C12000, or C12200 or copper alloy UNS No. C23000, forwhich allowable stresses are found in ASME B31.1,ASMEB31.9,or ASME Boiler and Pressure Vessel Code,Section l1,Part D.
(b) Other coppers and copper alloys are permitted,provided they meet the chemical requirements of 84% minimum copper and 16%maximum zinc and providedthe fittings produced from the copper alloy meet all themechanical and corrosion-resistant properties for the endpurposes of the fittings. For potable water applications,fittings shall be produced from low-lead (0.25% or less) copper alloys and shall meet all the mechanicaland corrosion-resistant properties for the end purposesof the fittings.The composition of the copper alloy shallcontain nothing that will inhibit joining to the tube or toother fittings.