API RP 591
API RP 591: Process Valve Qualification Procedure
CDN $226.00
This publication was last reviewed and confirmed in 2026.
Description
This recommended practice (RP) provides recommendations for evaluation of a manufacturer’s valve construction for the purpose of determining a manufacturer’s capability to provide new valves manufactured in accordance with the applicable standards listed in Section 2.
Evaluation 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.
Edition
7
Published Date
2026-02-14
Status
Current
Pages
62
Language
English
Format
Secure PDF
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Abstract
This recommended practice (RP) provides recommendations for evaluation of a manufacturer’s valve construction for the purpose of determining a manufacturer’s capability to provide new valves manufactured in accordance with the applicable standards listed in Section 2. Evaluation 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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