API 6D 2002 pdf free download

API 6D 2002 pdf free download.API Specification 6D, Twenty-second Edition January 2002.
1 Scope This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems meeting the requirements of ISO 1 3623 for the petroleum and natural gas industries. Valves for pressure ratings exceeding PN 420 (Class 2500) are not covered by this International Standard. Annex A of this International Standard provides guidelines to assist the purchaser with valve type selection and specification of specific requirements when ordering valves. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this International Standard. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this International Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of ISO and IEC maintain registers of currently valid International Standards. NOTE Non-International Standards may be replaced, by agreement, with other recognized and equivalent national or industry standards. ISO 7-1 , Pipe threads where pressure-tight joints are made on the threads—Part 1: Dimensions, tolerances and designation. ISO 1 48, Steel — Charpy impact test (V-notch). ISO 228-1 , Pipe threads where pressure-tight joints are not made on the threads—Part 1: Dimensions, tolerances and designation. ISO 228-2, Pipe threads where pressure-tight joints are not made on the threads—Part 2: Verification by means of limit gauges. ISO 5208, Industrial valves—Pressure testing of valves. ISO 7005-1 , Metallic flanges—Part 1: Steel flanges. ISO 1 0474, Steel and steel products—Inspection documents. ISO 1 0497, Testing of valves—Fire type-testing requirements.
ASME B1 .20.1 , Pipe threads, General purpose (inch). ASME B1 6.5, Pipe flanges and flanged fittings—NPS 1 / 2 through NPS 24. ASME B1 6.1 0, Face-to-face and end-to-end dimensions of valves. ASME B1 6.25:1 997, Buttwelding ends. ASME B1 6.34:1 996, Valves—Flanged, threaded, and welding end. ASME B1 6.47, Larger diameter steel flanges—NPS 26 through NPS 60. ASME B31 .4:1 992, Liquid transportation systems for hydrocarbons, liquid petroleum gas, anhydrous ammonia, and alcohols. ASME B31 .8:1 995, Gas transmission and distribution piping systems. ASME Boiler and Pressure Vessel Code:1 998, Section V, Non destructive examination. ASME Boiler and Pressure Vessel Code:1 998, Section VIII, Division 1 , Rules for construction of pressure vessels. ASME Boiler and Pressure Vessel Code:1 998, Section VIII, Division 2, Alternative rules for construction of pressure vessels. ASME Boiler and Pressure Vessel Code, Section IX, Qualification standard for welding and brazing procedures, welders, brazers, and welding and brazing operators. (American Society of Mechanical Engineers, 345 East 47 th Street, New York 10017-2392, USA) ASNT SNT-TC-1 A, Recommended Practice No. SNT-TC-1A. (American Society of Non-Destructive Testing, P.O. Box 28518, 1711 Arlingate Lane, Columbus, Ohio 43228-0518, USA）
3.1 1 handwheel wheel consisting of a rim connected to a hub, for example, by spokes, and used to operate manually a valve requiring multiple turns 3.1 2 locking device part or an arrangement of parts for securing a valve in the open and/or closed position 3.1 3 manual actuator manual operator wrench (lever) or handwheel with or without a gearbox 3.1 4 maximum pressure differential (MPD) maximum difference between the upstream and downstream pressure across the obturator at which the obturator may be operated 3.1 5 nominal pipe size (NPS) numerical inches designation of size which is common to components in piping systems of any one size NOTE The nominal pipe size is designated by the letters NPS followed by a number. 3.1 6 nominal pressure (PN) class numerical pressure design class as defined in ISO 7005-1 and used for reference purposes NOTE The nominal pressure (PN) class is designated by the abbreviation PN followed by a number. 3.1 7 nominal size (DN) numerical metric designation of size which is common to components in piping systems of any one size NOTE Nominal size is designated by the letters DN followed by a number. 3.1 8 obturator closure member part of a valve, such as a ball, clapper, disc, gate or plug, which is positioned in the flow stream to permit or block flow 3.1 9 operator device (or assembly) for opening or closing a valve