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发表于 2016-9-20 18:28:35
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法兰端阀体不属于Special Class,见定义:2.1.3 Special Class Valves. Threaded- or weldingend valves that conform to all the requirements of para. 2.1.2, and in addition have successfully passed the examinations required by section 8, may be designated Special Class valves. Pressure–temperature ratings shall not exceed the values that are listed in Table 2 with an identifying label “B — Special Class.” Special Class ratings shall not be used for flanged-end valves.
第8部分的标题是8. Requirements for Special Class Valves,因此第8部分不适用于Special Class阀门。8.3.1.1 (a) (1), (2), (3)不包括法兰端的阀门。
ASME B16.34的官方解释:
Interpretation: 08-5
Subject: ASME B16.34-2004, para. 8.3.1.1
Date Issued: March 18, 2008
Record: 08-346
Question: Does ASME B16.34-2004 para. 8.3.1.1 apply for a flanged end body valve?
Reply: No.
ASME B16.34 Interpretations:ASME B16.9和B16.34的最新ASME官方解释
http://www.asimi8.com/forum.php?mod=viewthread&tid=8164&fromuid=4536
(出处: ASME中国制造)
如果法兰端的阀体也需要像上法兰那样拍片,那是客户的额外要求,这是合同要求,不是B16.34的基本要求。
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