ASME B16.10 Face-to-Face and End-to-End Dimensions of Valves

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ASME B16.10 Document Information:

Title
Face-to-Face and End-to-End Dimensions of Valves

ASME International

Publication Date:
Jun 15, 2000

Scope:

General

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 assure installation interchangeability for valves of a given material, type, size, rating class, 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 buttwelding end and to flanged end valves with facings defined in para. 2.3.3.

In Tables 1 to 6 (Tables A1 to A6), A or D in a column head denotes valves having flanged ends as illustrated; B or E denotes valves having buttwelding ends.

Standard Units

The values stated in either millimeter units (Tables 1 to 10) or inch units (Tables A1 to A10) 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; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

Cast Iron Valves

Only flanged end valves (and others intended for assembly between flanges) are covered by this Standard. Mating dimensions and facings of flanged ends conform to those in ASME B16.1. Dimensional tables for various types and sizes of valves are as follows.

Gate, Plug, and Check Valves

(a) Class2 125 - Tables 1 and A1

(b) Class 250 - Tables 2 and A2

Globe and Angle Valves

(a) Class 125 - Tables 1 and A1

(b) Class 250 - Tables 2 and A2

Wafer Swing Check Valves

(a) Class 125 - Tables 7 and A7

(b) Class 250 - Tables 7 and A7

Butterfly Valves

(a) Class 25 - Tables 8 and A8

(b) Class 125 - Tables 8 and A8

Ductile Iron Valves

Only flanged end valves (and others intended for assembly between flanges) are covered. Mating dimensions 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 A1

(b) Class 300 - Tables 2 and A2

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 (3) of Table 8 (A8) for flange information. For flangeless or wafer valves intended for assembly between flanges, refer to Tables 7 and 8 (A7 and A8) for flange information. Only 2500 are included in his Standard. Dimensional tables for various types and sizes of valves are as follows.

Gate, Globe, Angle, Check, Plug, and Ball Valves

(a) Class 150 - Tables 1 and A1

(b) Class 300 - Tables 2 and A2

(d) Class 900 - Tables 4 and A4

(e) Class 1500 - Tables 5 and A5

(f) Class 2500 - Tables 6 and A6

Y-Pattern Globe and Y-Pattern Swing Check Valves

Class 150 - Tables 1 and A1

Wafer Knife Gate Valves

Class 150 - Tables 7 and A7

Wafer Swing Check Valves

Class 150 to 2500 - Tables 7 and A7

Butterfly Valves

(a) Class 150 - Tables 8 and A8

(b) Class 300 - Tables 8 and A8

Convention

For the purpose of determining conformance with this Standard, the convention for fixing significant digits where limits, maximum or minimum values, are specified shall be "rounding off" as defined in ASTM 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.

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