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API RP 591

M00021968

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API RP 591 API Recommended Practice 591, Process Valve Qualification Procedure, Third Edition

standard by American Petroleum Institute, 09/12/2003

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This recommended practice provides recommendations for evaluation of a manufacturer's valve construction and quality assurance program for the purpose of determining a manufacturer's capability to provide new valves manufactured in accordance with the applicable API standards listed in Section 2.

Qualification of valves under this recommended practice is "manufacturing facility specific" and does not cover valves manufactured by other manufacturing facilities, whether owned by the same manufacturer or a third party.