ASME B16.14-2013 pdf download

ASME B16.14-2013 pdf download.Ferrous Pipe Plugs,Bushings, and Locknuts With Pipe Threads.
2 GENERAL
2.1 References
Standards and specifications adopted by reference are shown in Mandatory Appendix II. It is not considered practical to identify the edition of each referenced standard and specification in the text. Instead, the editions of the referenced standards and specifications are listed in Mandatory Appendix II.
2.2 Quality Systems
Requirements relating to the product manufacturer’s quality system programs are described in Nonmandatory Appendix A.
2.3 Relevant Units
This Standard states values in both SI (Metric) units and U.S. Customary units. These systems of units are to be regarded separately as standard. Within the text, the U.S. Customary units are shown in parentheses or in separate tables that appear in Mandatory Appendix I. The values stated in each system are not exact equivalents; therefore, it is required that each system of units be used independently of the other. Combining values from the two systems constitutes nonconformance with the Standard.
2.4 Service Conditions
Criteria for selection of materials suitable for particular fluid service are not within the scope of this Standard.
2.5 Convention
For determining conformance with this Standard, the convention for fixing significant digits where limits (maximum and minimum values) are specified shall be as 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.
8.1.2 Alignment. The maximum allowable variation in the alignment of threads of all openings shall be 5.0 mm/rn (0.06 in./ft).
8.1.3 InternaL Threading. All fittings with internal threads, except locknuts, shall be threaded with ASME B1.20.1 NPT threads. The reference point for gaging is the starting end of the fitting, provided the chamfer does not exceed the major diameter of the internal thread. When a chamfer on the internal thread exceeds this limit, the reference point becomes the last thread scratch on the chamfer cone.
8.1.4 ExternaL Threading. All externally threaded fittings shall be threaded with ASME B1.20.1 NPT threads. The reference point for gaging is the end of the thread, provided the chamfer is not smaller than the minor diameter of the external thread. When a chamfer on the external thread exceeds this limit, the reference point becomes the last thread scratch on the chamfer cone.
8.1.5 Locknuts. I..ocknuts shall be threaded with ASME B1.20.1 NPSL threads.
8.2 Gaging Tolerances
For taper pipe threads, the variation in threading shall be limited to one turn large or small from the gaging notch on the plug or the gaging face of the ring when using working gages.
9 PATTERN TAPER
Plug squares or hexagons, raised or countersunk, may have opposite sides tapered a maximum of 4 deg total.