ASME B16.10:2022 pdf download

ASME B16.10:2022 pdf download.Face-to-Face and End-to-End Dimensions of Valves
1 SCOPE
1.1 General 1.1.1 Application. This Standard covers face-to-face and end-to-end dimensions of straightway valves, and center-to-face and center-to-end dimensions of angle valves. Its purpose is to ensure installation interchange- abilityforvalves ofagivenmaterial, type,size,ratingclass, and end connection. Face-to-face and center-to-face dimensions apply to flanged end valves with facings defined in para. 2.3.1 and to other valves intended for assembly between flat face or raised face flanges. End- to-end dimensions apply to grooved end, buttwelding end, and flanged end valves with facings defined in para. 2.3.3. Center-to-end dimensions apply to butt- welding end and to flanged end valves with facings defined in para. 2.3.3. 1.1.2 Data Source Reference. Throughout this Standard, data references are cited, e.g., “extracted from” and “compatible with.” These data are relevant to the reference standard in place atthe date shown in the Fore- word for American National Standards Institute approval of this Standard. 1.2 Standard Units This Standard states values in both SI (Metric) and U.S. Customary units. These systems of units are to be regarded separately as standard. In this Standard, the U.S. Customary units are shown in parentheses. 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 this Standard. 1.3 Cast Iron Valves Only flanged end valves (and others intended for assembly between flanges) are covered by this Standard. Matingdimensions and facings offlanged ends conform to those inASME B16.1. Dimensional tables forvarious types and sizes of valves are specified in paras. 1.3.1 through 1.3.4.1.5 Steel and Alloy Valves This category includes carbon, alloy, stainless steels, and the nonferrous materials listed in ASME B16.34. It includes flanged, buttwelding, and grooved ends, as well as the types of valves intended for assembly between flanges. Mating dimensions and facings of flanged ends conform to those in ASME B16.5, ASME B16.47, Series A, or MSS SP-44. [For flanged end butterfly valves, refer to Note (2) ofTable 1.3-4 for flange informa- tion.] Forflangeless orwafervalves intendedforassembly between flanges, refer to Tables 1.3-3 and 1.3-4 for flange information. Onlybuttweldingendvalves inratingClasses 150 through 2500 are included in this Standard. Dimen- sionaltablesforvarioustypesandsizesofvalvesarespeci- fied in paras. 1.5.1 through 1.5.5.
2 DEFINITIONS
2.1 Valve Size Designation 2.1.1 Nominal Diameter (DN). The size of a valve is designated by the nominal size of its end connections. This is denoted byDN, a dimensionless number indirectly related to the physical size of the connecting pipe [see Tables 1.3-1 through 3.3-1]. The valve size is not neces- sarily the same as the inside diameter or port diameter. 2.1.2 Valve Size Designation. NPS, followed by a dimensionless number, is the designation for nominal valve size. NPS is related to the reference nominal diameters, DN, used in international standards. The rela- tionship is, typically, as follows:2.1.3 Reduced Port Valves (a) Reduced port, gate, and ball valves conforming to API 6D are designated for size by two numbers, the first being the NPS on the valve ends and the second being the NPS ofthe port (seats, moving parts, etc.); e.g., NPS 6 × 4 designates a valve ofend size NPS 6 with a port to match NPS 4. These valves shall have face-to-face or end-to-end dimensions corresponding to valves having the same size end connections; i.e., a NPS 6 × 4 valve shall have the face- to-face or end-to-end dimensions of a NPS 6 valve. (b) Reducedport,pressuresealbonnet,gate,globe,and checkvalves are designated forsize bythree numbers, the first and last being the NPS of the valve ends, the second being the NPS ofthe port; e.g., NPS 6 × 4 × 6 designates a valve having ends matching NPS 6 with a port to match NPS 4. Likewise, NPS 6 × 4 × 4 would designate a valve havingone end matchingNPS 6, the othermatchingNPS 4, and the portmatchingNPS 4. These valves shall have face- to-face orend-to-end dimensions correspondingto valves having the same port size; i.e., either a NPS 6 × 4 × 6 or a NPS 6 × 4 × 4 valve shall have the face-to-face or end-to- end dimensions of a NPS 4 valve. 2.2 Pressure Rating Designations Class, followed by a dimensionless number, is the stan- dardized designation for pressure temperature-ratings used for valves. The numerical designations in use are as follows: (a) for cast iron: 25, 125, 250 (b) for ductile iron: 150, 300 (c) for steel: 1 150, 300, 600, 900, 1500, 2500