ASME B16.29:2001 pdf download WROUGHT COPPER AND WROUGHT COPPER ALLOY SOLDER JOINT DRAINAGE FITTINGS – DWV
6 MARKING
Each fitting shall be marked permanently and legiblywith the manufacturer’s name or trademark and withDwV (to indicate drain-waste-vent).
7 MATERIAL
Fittings shall be made of wrought copper or wroughtcopper alloy material having not less than an 84%copper≈ content.
8 LAYING LENGTHS
Due to widely varying manufacturing processes, lay-ing length dimensions of fittings are not standardizedConsult the manufacturer for these dimensions.
9 OVALITY
Maximum ovality shall not exceed 1% of the maximum diameter shown in Table 2.The average of themaximum and minimum diameters must be within thedimensions shown in the table.
10 THREADED ENDS
10.1 General
Fitting threads shall be right-hand,conforming toASME B1.20.1-1983(R2001).They shall be taperthreads (NPT),except for slip joint ends, which shallhave straight pipe threads (NPSM)
10.2 Chamfer
All internal threads shall be chamfered a distancenot less than one-half the pitch of the thread at anangle of approximately 45 deg with the axis of thethread, and all external threads shall be chamfered atan angle of 30 deg to 45 deg from the axis, for thepurposes of easier entrance in making a joint andprotection of the thread. Chamfering shall be concentricwith the threads. The length of threads specified in alltables shall be measured to include the chamfer.
10.3 Threading Tolerances
Tapered pipe threads (NPT) shall be checked by useof working plug or ring gages, either standard or limit types. Gages shall be threaded on/in hand tight. Thereference point for gaging intemnal product threadsdepends upon the chamfer diameter. When the internaldiameter exceeds the major diameter of thechamferinternal thread, the reference point is the last threadscratch on the chamfer cone. Otherwise, when theinternal chamfer diameter does not exceed the majordiameter of the internal thread, the reference point isthe end of the fitting. On the external thread. thereference point shall be flush with the end of the fittingGaging practices shall be as shown in Notes 3 and 4of Table 3.Straight pipe threads (NPSM) shall bechecked by the use of standard GO and NOT GO plugand ring gages.
11 DESIGN OF THREADED ENDS
External and internal threaded ends of fittings willbe furnished with a polygon to facilitate installation.
12 ALIGNMENT
The maximum allowable variation in the angularalignment of all openings shall be 0.06 in in 1 ft (0.5%)other than in the direction of pitch (see section 3).
13 GAGING
13.1 Standard Gaging Method of SolderJoint Ends
The standard method of gaging the diameter toler-ances for male and female ends shall be by use ofplain plug and ring gages designed to hold the productwithin the limits established in Table 2.
ASME B16.29:2001 pdf download
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