ASME B16.22:2012 pdf download.Wrought Copper and Copper Alloy Solder-Joint Pressure Fittings.
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 I (Table Il-i). 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 Il-I). The out-of-roundness condition of the cross-sectional area shall not exceed the value shown in Table I (Table Il-i).
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 I (Table Il-i).
10 ThREADED ENDS
Fitting threads shall be right-hand, conforming to ASME Hl.20.l. They shall be taper threads (NL’T).
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.
Maximum ovality of the fitting solder-joint end shall not exceed 1% of the maximum diameters shown in Table I (Table Il-i). 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 Il-I). The out-of-roundness condition of the cross-sectional area shall not exceed the value shown in Table I (Table Il-i).
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 I (Table Il-i).
10 ThREADED ENDS
Fitting threads shall be right-hand, conforming to ASME Hl.20.l. They shall be taper threads (NL’T).
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.
