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API Spec 6D Addendum 1 Addenda 1 to Specification for Pipeline Valves, Twenty-third Edition (Identical to ISO 14313:2007)
Amendment by American Petroleum Institute, 10/01/2009
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Full Description
This Specification specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems meetingISO 13623 or similar requirements for the petroleum and natural gas industries.
This Specification is not applicable to subsea pipeline valves, as they are covered by a separate Specification (API Spec 6DSS).
This Specification is not for application to valves for pressure ratings exceeding PN 420 (Class 2 500)