ASME B16.10:2009 pdf download

ASME B16.10:2009 pdf download.Face-to-Face and End-to-End Dimensions of Valves
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- ability for valves of a given material, type, size, rating class, and end connection. Face-to-face and center-to- face dimensionsapplytoflangedendvalves withfacings 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 applyto buttweld- ing 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 at the date shown in the Foreword for American National Standards Institute approval of this Standard.
1.2 Standard Units
The values stated in either millimeter units (Tables 1 through 10) or inch units 1 (Tables I-1 through I-10) are to be regarded separately as standard. Within the text, the inch units are shown in parentheses. The values stated in each system are not exact equivalents; there- fore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.
1.3 Cast Iron Valves
Only flanged end valves (and others intended for assembly between flanges) are covered by this Standard. Mating dimensions and facings offlanged ends conform to those in ASME B16.1. Dimensional tables for various types and sizes of valves are specified in paras. 1.3.1 through 1.3.4.
1.4 Ductile Iron Valves
Only flanged end valves (and others intended for assembly between flanges) are covered. Mating dimen- sions and facings of flanged ends conform to those in ASME B16.42. Valves are rated Class 150 and Class 300. The following cast iron and steel dimensional tables are also used for ductile valves: (a) Class 150 — Tables 1 and I-1 (b) Class 300 — Tables 2 and I-2
1.5 Steel and Alloy Valves
This category includes carbon, alloy, and 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) of Table 8 (Table I-8) for flange information.] For flangeless or wafer valves intended for assembly between flanges, refer to Tables 7 and 8 (Tables I-7 and I-8) for flange information. Only buttwelding end valves in rating Classes 150 through 2500 are included in this Standard. Dimensional tables for various types and sizes of valves are specified in paras. 1.5.1 through 1.5.5.
1.6 Convention
For the purpose of determining conformance with this Standard, the convention for fixing significant digits where limits, maximum or minimum values, are speci- fied, shallbe “rounding off” as defined inASTM Practice E29. This requires that an observed or calculated value shall be rounded off to the nearest unit in the last right-hand digit used for expressing the limit. Decimal values and tolerance do not imply a particular method of measurement.
4.1.1 Short Pattern. For pressure seal or flangeless bonnet valves having buttwelding ends in Class 600 and higher, the regular end-to-end dimensions shall be equal to the short pattern dimensions shown in Tables 3 through 6 (Tables I-3 through I-6). At the manufacturer’s option, the end-to-end dimensions of these valves may be the same as the face-to-face dimensions of raised face flanged valves.