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API 608 vs ANSI B16.34
- Thread starter Sid89
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For a ball valve to be 608, it must also meet ASME B16.34. No relationship to pipeline ball valve requirements in API-6D. 608 has additional requirements for stem strength, seat pressure-temperature ratings, and marking. You need to get a copy of 608. But, please note that the next edition of 608 is to be published by API soon. It adds several more marking requirements and also requires fugitive emissions compliance with API-641.
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