Process Valve Qualification Procedure, Fifth Edition
API Recommended Practice 591, Process Valve Qualification Procedure, Fifth Edition, has been published. This recommended practice (RP) provides recommendations for evaluation of a manufacturer's valve construction and quality management system for the purpose of determining a manufacturer's capability to provide new valves manufactured in accordance with the applicable standards listed in Section 2.
Qualification of valves under this RP is "manufacturing facility specific" and does not cover valves manufactured by other manufacturing facilities, whether owned by the same manufacturer or a third party.
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