ASME B16.22-2013 pdf free

ASME B16.22-2013 pdf free.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings.
The following symbols are used to designate the type of fitting end:
C = solder-joint fitting end made to receive copper tube diameter (female)
F = internal ANSI standard taper pipe-thread end (female) NPTI
FTC = solder-joint fitting end made to copper tube diameter (male)
M = external ANSI standard taper pipe-thread end (male) NPTE
43 Definitions
out 4-roundness: maximum measured diameter minus minimum measured diameter.
ovulity: elliptical condition associated with out-of- roundness.
5 MARKING
Each fitting shall be permanently marked with the manufacturer’s name or trademark in accordance with MSS S[’-25, Marking on fittings less than size or on any fitting where it damages soldering surfaces is not required.
6 MATERIAL
qa, httings shall be made irom 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 retuiremcnts of 84% minimum copper and 1 f,% maximum zinc and provided the fittings produced from the copper alloy meet all the mechanical and corrosion-resistant properties for the end purposes 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 mechanical and corrosion-resistant properties for the end purposes of the fittings. The composition of the copper alloy shall contain nothing that will inhibit joining to the tube or to other fittings.
7 LAYING LENGThS
Due to widely varying manufacturing processes, meaningful laying length requirements of fittings cannot be established. Consult the manufacturer for these dimensions.
8 TUBE STOPS
Except for repair couplings, fittings shall be manufactured with a tube stop. Repair couplings shall not require a tube stop. The tube stop shall control joint length, even with an external (FTC) end having the minimum outside diameter shown in Table 1 (Table Il-i), Examples of various tube stop configurations are shown in Fig. 2.
9 INSPECTION TOLERANCE
9.1 ConventIon
For determining conformance with this Standard, the convention for fixing significant digits where limits (maximum or 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.
9.2 Linear Dimensions
An inspection tolerance, as shown in Table 3 (Table 11.3), shall be allowed on center-to-shoulder, center-to-center, center-to-threaded-end, and shoulder-to-threaded-end dimensions on all fittings having internal (C) solder ends, as well as on center-to- solder-end and solder-end-to-threaded-end dimensions on all fittings having external (FIG) solder ends.
Coupling inspection limits for shoulder-to-shoulder and shoulder-to-end dimensions shall be double those shown in Table 3 (Table 11-3), except that the minus tolerance applied to dimension L (see Fig. 1) shall not result in a dimension less than 1.5 mm (0.06 in.).
The largest opening in the fitting shall govern the tolerance to be applied to all openings.ASME B16.22 pdf free download.