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• Ferdy Uchi

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

________________________________________________________________ Interpretation: 00-1 Subject:

Request for Interpretation ASME B16.10-1992

Date Issued:

February 7, 2000

Record:

B16-99-019b

Question: With the exception of Class 300, does ASME B16.10-1992 cover 32” Solid Wedge Gate Valves?

Reply: No. ________________________________________________________________

COPYRIGHT ASME. THESE INTERPRETATIONS ARE FOR ASME COMMITTEE USE ONLY. THEY ARE NOT TO BE DUPLICATED OR USED FOR OTHER THAN ASME COMMITTEE BUSINESS.

Interpretation: 1-1 Subject:

Fig. 1, B16.10-1973

Date Issued: May 29, 1973 File:

B16-86-001

Question: Is Fig. 1 of ANSI B16.10-1973 in error regarding the face-toface dimensions, as defined in para. 3.1, for valves having flanges with female or grove facings? Reply: Yes. In Fig. 1 of ANSI B16.10-1973 relating to the two illustrations entitled “Large or Small Female Face-to-Face” and “Large or Small Groove” (and also to the illustration entitled “Ring Joint”), “Face-to-Face Dimension” should be changed to “End-to-End Dimension.” The following definition would apply: end-to-end – For those flanged valves where the gasket contact surfaces are not located at the extreme ends of the valve, the distance between the extreme ends is described as the “end-to-end” dimension, and applies to flanged valves having these facings: (a) ring joint (b) large or small female (c) large or small groove Paragraph 5 would be changed to indicate derivation of end-to-end dimensions rather than face-to-face dimensions for valves having female, groove, or ring joint facings. Or otherwise, in the words of the inquirer, for the dimension line for the “Face-to-Face Dimension” of valves having flanges with female or groove facings, the two illustrations in Fig. 1 should “have the arrow ending at the gasket face and not at the outer end of the flange.” (This would apply to the illustration of the ring joint facing.) ________________________________________________________________

COPYRIGHT ASME. THESE INTERPRETATIONS ARE FOR ASME COMMITTEE USE ONLY. THEY ARE NOT TO BE DUPLICATED OR USED FOR OTHER THAN ASME COMMITTEE BUSINESS.