ASME B16.14-2010 pdf download
ASME B16.14-2010 pdf download.Ferrous Pipe Plugs, Bushings, and Locknuts With Pipe Threads.
5 MARKING Each fitting shall be marked for identification with the manufacturer’s name or trademark, except where a marking is impractical. 6 MATERIALS (a) These fittings are furnished in gray iron, malleable iron, ductile iron, or steel as indicated in the individual tables. (b) The chemical and mechanical properties of cast material shall equal or exceed those properties listed in ASTM A 126, as applicable. Steel castings, forgings, or machined bar properties shall correspond to the compa- rable ASTM casting material specifications. The fittings manufacturer shall be prepared to certify conformance based on test data. 7 DIMENSIONS AND TOLERANCES (a) Dimensions in metric units are given in Tables 1 through 5 for various types of fittings. Corresponding U.S. Customary values are given in Tables I-1 through I-5 in Mandatory Appendix I. (b) At no point in the component wall shall the metal thickness be less than 90% of the values listed in the tables. 8 THREADS 8.1 Thread Form Threads shall be in accordance with ANSI/ASME B1.20.1. All internal taper pipe 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. External taper pipe threads shall be chamfered at an angle between 30 deg and 45 deg with the axis. Countersinking and chamfering shall be concentric with the threads. (a) The length of threads specified in the tables shall include the countersink or chamfer. (b) The maximum allowable variation in the align- ment of threads of all openings shall be 5.0 mm/m (0.06 in./ft).
GENERAL NOTES: (a) All dimensions are given in millimeters. (b) Cored bushings have minimum metal thickness at all points equal to dimension G, except at the end of the thread. NOTES: (1) Hexagon head or octagon head bushings NPS 2 1 ⁄ 2 and smaller reducing one NPS shall not be made of gray cast iron. Other NPS may be made of either cast iron or malleable iron, ductile iron, or steel. Face bushings NPS 2 1 ⁄ 2 and smaller shall not be made of gray cast iron. Face bushings NPS 3 and larger reducing one NPS shall not be made of gray cast iron. Face bushings NPS 3 and larger reducing two NPS or more may be made of either cast or malleable iron, ductile iron, or steel. (2) In the case of outside head bushings, length A includes provisions for imperfect threads (see also section 8). (3) Heads of bushings shall be hexagonal or octagonal, except that on the larger sizes of outside head bushings, the heads may be made round with lugs instead of hexagonal or octagonal. (4) G is the same as metal thickness for Class 125 Cast Iron Threaded Fittings (ASME B16.4). For tolerance, see para. 7(b). (5) To provide proper metal thickness, these NPS shall not be cored out to diameters greater than the root diameter of the internal thread. The length of the internal thread may be equal to the minimum dimension, T, or greater up to the full length of bushing. (6) When made of bar stock, the dimensions may be 5 ⁄ 8 in., 11 ⁄ 16 in., 7 ⁄ 8 in., 1 1 ⁄ 8 in., and 1 7 ⁄ 16 in., respectively, in order to use regular bar stock sizes.
(a) An outside head bushing is one having any part of the polygon protruding beyond the outside diameter of the large end of the external thread. (b) An inside head bushing is one having all parts of the polygon head contained within the root diameter of the large end of the external thread. (c) A face bushing is one having two lugs on the face of the large end of the external thread by which a bar can be used for makeup with internal pipe threads. Lugs are optional on face bushings in small pipe sizes when made of bar stock. 8.4 Locknuts Locknuts shall be tapped with straight pipe threads in accordance with ANSI/ASME B1.20.1. 9 PATTERN TAPER Plug squares or hexagons, raised or countersunk, may have opposite sides tapered a maximum of 4 deg total.
