ASME B16.22-2012 pdf download

ASME B16.22-2012 pdf download.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings.
2.3 Quality Systems
Requirements relating to the product manufacturer’s quality system program are described in Nonmandatory Appendix B.
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 I (Table 11-1), made with typical commercial solders, are given in Table 1-1 (Table 11-4).
The internal pressure-temperature rating of the system with solder joints shall be the lowest of the values shown in Table 2 (Table 11-2) and Table I-i (Table 11-4) and those of the tube, valves, and appurtenances.
3.1.2 Braze Joints. Pressure—temperature ratings for braze joints to the dimensions of Table 1 (Table 11-1), made with typical commercial brazing materials, shall be considered equal to the values given in Table 2 (Table 11-2).
The internal pressure-temperature rating of the system with braze joints shall be the lowest of the values shown in Table 2 (Table 11-2) 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 11-2).
4 TERMINOLOGY
4.1 Size
The size of the fittings shown in Table 1 (Table 11-1) 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 B1.20.1.
Fittings are designated by the size of the openings in the sequence illustrated in Fig. 1.
The largest opening in the fitting shall govern the tolerance to be applied to all openings.
9.3 Ovality of Fitting End (C or FIG)
Maximum ovality of the fitting solder-joint end shall not exceed 1% of the maximum diameters shown in Table 1 (Table 11-1). The average of the maximum and minimum diameters shall be within the dimensions shown in the Table.
9.4 Inside Diameter of Fitting
The minimum cross-sectional area of the inside diameter through the fitting body shall not be less than the theoretical minimum area defined by diameter 0 in Table 1 (Table 11-1). The out-of-roundness condition of the cross-sectional area shall not exceed the value shown in Table 1 (Table 11-1).
For reducer or adapter fittings, the smallest end diameter shall apply, provided that this diameter does not restrict the other outlets.
9.5 Wall Thickness
The minimum wall thickness shall not be less than that shown in Table 1 (Table 11-1).
10 THREADED ENDS
Fitting threads shall be right-hand, conforming to ASME B1.20.1. They shall be taper threads (NPT).
10.1 Countersink or Chamfer
All internal threads shall be countersunk a distance no less than one-half the pitch of the thread, at an angle of approximately 45 deg with the axis of the thread. All external threads shall be chamfered at an angle of 30 deg to 45 deg from the axis. Countersinking and chamfering shall be concentric with the threads.
The length of threads shall be measured to include the countersink or chamfer.
10.2 Threading Tolerances.