MSS SP-72-2010 法兰端或对焊端通用球阀.docxVIP

MSS?SP-72-2010

Ball?Valves

with

Flanged?or

Butt-Welding?Ends

for?General?Service

Standard?Practice

Developed?and?Approved?by?the

Manufacturers?Standardization?Society?of?the

Valve?and?Fittings?Industry,?Inc.

127?Park?Street,?NE

Vienna,?Virginia?22180

Phone:?(703)?281-6613

Fax:?(703)?281-6671

e-mail:?info@

MSS STANDARD?PRACTICE SP-72

This?MSS?Standard?Practice?was?developed?under?the?consensus?of?the?MSS?Technical?Committee?401?and?the

MSS?Coordinating?Committee.?The?content?of?this?Standard?Practice?is?the?result?of?the?efforts?of?competent?and

concerned?volunteers?to?provide?an?effective,?clear,?and?non-exclusive?specification?that?will?benefit?the?industry

as?a?whole.?This?MSS?Standard?Practice?is?intended?as?a?basis?for?common?practice?by?the?manufacturer,?the

user,?and?the?general?public.?The?existence?of?an?MSS?Standard?Practice?does?not?in?itself?preclude?the

manufacture,?sale,?or?use?of?products?not?conforming?to?the?Standard?Practice.?Mandatory?conformance?is

established?only?by?reference?in?a?code,?specification,?sales?contract,?or?public?law,?as?applicable.

Other?standards?documents?referred?to?herein?are?identified?by?the?date?of?issue?that?was

applicable?to?this?Standard?Practice?at?the?date?of?issue?of?this?Standard?Practice.?See?Annex

A.?This?Standard?Practice?shall?remain?silent?on?the?applicability?of?those?other?standards?of

prior?or?subsequent?dates?of?issue?even?though?applicable?provisions?may?not?have?changed.

References?contained?herein?which?are?bibliographic?in?nature?are?noted?as?‘supplemental’?in

the?text.”

Unless?otherwise?specifically?noted?in?this?MSS?SP,?any?standard?referred?to?herein?is?identified?by?the?date?of

issue?that?was?applicable?to?the?referenced?standard(s)?at?the?date?of?issue?of?this?MSS?Standard?Practice?(See

Annex?A).

In?this?Standard?Practice?all?notes,?annexes,?tables,?and?figures?are?construed?to?be?essential?to?the?understanding

of?the?message?of?the?standard,?and?are?considered?part?of?the?text?unless?noted?as?sup