• API 591 REDLINE : 2008

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.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

    Available format(s): 

    Superseded date:  01-02-2024

    Language(s): 

    Published date:  01-01-2008

    Publisher:  American Petroleum Institute

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    Table of Contents - (Show below) - (Hide below)

    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 (informative) - Suggested 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.)

    Abstract - (Show below) - (Hide below)

    Describes 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.

    General Product Information - (Show below) - (Hide below)

    Document Type Redline
    Publisher American Petroleum Institute
    Status Superseded
    Superseded By

    Standards Referencing This Book - (Show below) - (Hide below)

    API STD 598 : 2016 VALVE INSPECTION AND TESTING
    API 609 : 2016 BUTTERFLY VALVES: DOUBLE-FLANGED, LUG- AND WAFER-TYPE
    ASME B16.10 : 2017 FACE-TO-FACE AND END-TO-END DIMENSIONS OF VALVES
    ASME B16.11 : 2016 FORGED FITTINGS, SOCKET-WELDING AND THREADED
    ASME B31.3:2016 PROCESS PIPING
    API std 602 : 2015 GATE, GLOBE, AND CHECK VALVES FOR SIZES DN 100 (NPS 4) AND SMALLER FOR THE PETROLEUM AND NATURAL GAS INDUSTRIES
    API STD 600 : 2015 STEEL GATE VALVES - FLANGED AND BUTT-WELDING ENDS, BOLTED BONNETS
    API 608 : 2012 METAL BALL VALVES - FLANGED, THREADED, AND WELDING ENDS
    API 599 : 2013 METAL PLUG VALVES - FLANGED, THREADED, AND WELDING ENDS
    ISO 9001:2015 Quality management systems — Requirements
    ASME B16.5 : 2017 PIPE FLANGES AND FLANGED FITTINGS: NPS 1/2 THROUGH NPS 24 METRIC/INCH STANDARD
    ASME B16.34 : 2017 VALVES - FLANGED, THREADED, AND WELDING END
    MSS SP 55 : 2011 QUALITY STANDARD FOR STEEL CASTINGS FOR VALVES, FLANGES, FITTINGS, AND OTHER PIPING COMPONENTS - VISUAL METHOD FOR EVALUATION OF SURFACE IRREGULARITIES
    ASME B18.2.2 : 2015 NUTS FOR GENERAL APPLICATIONS: MACHINE SCREW NUTS, HEX, SQUARE, HEX FLANGE, AND COUPLING NUTS (INCH SERIES)
    API 603 : 2013 CORROSION-RESISTANT, BOLTED BONNET GATE VALVES - FLANGED AND BUTT-WELDING ENDS
    API 594 : 2017 CHECK VALVES: FLANGED, LUG, WAFER, AND BUTT-WELDING
    ASME B16.25 : 2012 BUTTWELDING ENDS
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