ASME B16-23 pdf free download

ASME B16-23 pdf free download Cast Copper Alloy Solder Joint Drainage Fittings: DWV
b) Fittings are designated by the size of the openingsin the sequence illustrated in Fig. 2.
7MARKING
a) Each fitting shall be marked permanently and legi-bly with the manufacturer’s name or trademark andwith “Dwvn (to indicate Drain Waste Vent).
b) vent fiftings shall be permanently marked”VENTONLY”(See Tables 43,44,1-43, and l-44) and shov themanufacturer ‘s name or trademark in accordance withMSS SP-25,
MATERIAL
Castings shall be copper alloy produced to meet
a)the requirements of ASTM B62 Alloy C83600; or
(b) the chemical and tensile requirements ofASTM B584 Alloy 83800 or 84400,and in all otherrespects comply with the requirements of ASTM B62.
9METAL THICKNESS
Dimensional variations will occur in the casting pro-cess. Pattern equipment shall be designed to produce themetal thickness given for fittings in Table 2 or Table I-2.Any final fitting metal wall thickness less than 90%of the thickness given in the table is unacceptable.
10INSPECTION TOLERANCE
10.1 Convention
For determining conformance with this Standard, theconvention for fixing significant digits where limits(maximum and minimum values) are specified shall beas defined in ASTM E29.This requires that an observedor calculated value be rounded off to the nearest unitin the last right-hand digit used for expressing the limit.Decimal values and tolerances do not imply a particularmethod of measurement.
10.2 Linear Dimensions
DwV fittings covered by this Standard shall conformto the laying lengths specified in Tables 4 through 56and ‘Tables I-4 through i-56.An inspection tolerance, asshown in Table 1 or Table l-1,shall be allowed on center-to-shoulder, center-to-threaded end, and shoulder-to-threaded end dimensions on all fittings having internalsolder (cup) ends; and on center-to-solder end, solderend-to-shoulder, and solder end-to-threaded dimen-sions on all fittings having external solder (fitting) ends.The largest opening in the fitting governs the toleranceto be applied to all openings.
The inspection tolerance for laying length dimensionsA,B, and C (in Table 4 or Table I-4) shall be double thoseshown above,except the minus tolerance applied to couplings; dimension A shall not result in a dimension less than 23 mm (0.09 in). . 10.3 Ovality Maximum ovality shall not exceed 1% of the maxi- mum diameters shown in Table 2 or Table I-2. The aver- age of the maximum and minimum diameters shall be within the dimensions shown in the table. 10.4 Alignment The maximum allowable variations in the regular alignment of all openings shall be 5 mm per 1 m (0.06 in. per 1 ft).
10.5 Gaging of Solder Joint Ends
Standard Gaging Methoxd of Solder Joint Ends. The standard method of gaging the diameter tolerances for male and female ends shall be by the use of plain plug and ring gages designed to hold the product within the limits established in Table 2 or Table 1-2.
(b) Optional Gnging Method of Solder Joint Ends. For gaging the diameter tolerance of male and female ends, the manufacturer may use direct reading instruments instead of ring and plug gages as specifed in para. (a). When gaging the diameters of male and female ends, using direct reading instruments, refer to para. 103. 11 THREADED ENDS
11.1 General Threaded ends shall conform to the dimensional requirements contained within Table 3 or Table 1-3. Fitting threads shall be right-hand, conforming to ASME B1.20.1. They shall be taper threads (NPT) except for slip joint ends, which shall have straight pipe threads (NPSM).
11.2 Thread Dimensions All internal threads shall be countersunk a distance not 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. This facilitates joint assembly and thread protection. Countersinking and chamfering shall be concentric to the threads. The length of threads specified in all tables shall be measured to include the countersink or chamfer.
11.3 Threading Tolerances Tapered pipe threads (NPT) shall be checked by use of working plug or ring gages either standard or limit types. Gages shall be threaded hand tight. The reference point for gaging internal taper threads, the plug gage, shall be screwed hand tight into the ftting. Internal product threads depend upon the chamfer diameter. When the intermal chamfer diameter exceeds the major