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).
8.2 Plugs
Plugs shall be threaded with ANSI /ASME B1.20.1taper pipe threads. The variation in threading shall belimited to one turn large or one turn small from thegaging notch on the plug or the gaging face of the ringwhen using working gages.
8.3 Bushings
Bushings shall be threaded with American NationalStandard taper pipe threads.Gaging of all threads shallcomply with ANSI/ ASME B1.20.1, except those sizes ofoutside hexagon bushings where the external threadlengths are shorter than those required by ANSI /ASMEB1.20.1.These bushings should be threaded so that whenmaking up the joint, the shoulder of the head will notinterfere.To ensure this, the threads, when made to theminimum length, shall be gaged as listed below with atolerance of one turn large or one turn small.
NPs /4 to NPS 1%, incl.
1 turn large
NPS 2
11/turns large
NPS 2h to NPS 8, incl.
2 turns large
(a) An outside head bushing is one having any partof the polygon protruding beyond the outside diameterof the large end of the external thread.
(b)An inside head bushing is one having all parts ofthe polygon head contained within the root diameter ofthe large end of the external thread.
(c) A face bushing is one having two lugs on the faceof the large end of the external thread by which a barcan be used for makeup with internal pipe threads.Lugsare optional on face bushings in small pipe sizes whenmade of bar stock.
8.4 Locknuts
Locknuts shall be tapped with straight pipe threadsin accordance with ANSI / ASME B1.20.1.
9PATTERN TAPER
Plug squares or hexagons, raised or countersunk, mayhave opposite sides tapered a maximum of 4 deg total.