API 591 : 2014
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
PROCESS VALVE QUALIFICATION PROCEDURE
Hardcopy , PDF
17-05-2019
English
01-01-2014
1 Scope
2 Normative References
3 Terms and Definitions
4 Purchaser Responsibilities and Recommended Actions
5 Manufacturer Quality Management System Evaluation
6 Valve Qualification
7 Post Qualification
Annex A (normative) - Selection Quantities for
Examination and Test of Valves Made in
Accordance with API Valve Standards
Annex B (normative) - Strength Tests for Stem
Shaft-to-closure Element Connections
Annex C (informative) - Suggested Minimum Acceptable
Casting Radiographic Results for Wall
Thickness < 50 mm (2 in.)
Annex D (normative) - Examination and Testing Tables
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