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About This Item

 

Full Description

Please note that any addenda or errata may not be included in translated editions of this standard.

This standard is a purchase specification for flanged steel pressure-relief valves. Basic requirements are given for direct spring-loaded pressure-relief valves and pilot-operated pressure-relief valves as follows:

— orifice designation and area;
— valve size and pressure rating, inlet and outlet;
— materials;
— pressure-temperature limits;
— center-to-face dimensions, inlet and outlet.

Nameplate nomenclature and requirements for stamping are detailed in Annex A.
 

Document History

  1. API Std 526

    👀currently
    viewing


    Flanged Steel Pressure-relief Valves, Seventh Edition, Includes Errata 1 (2018)

    • Most Recent
  2. API Std 526


    Flanged Steel Pressure-relief Valves, Sixth Edition (Includes Errata 1, Errata 2)

    • Historical Version
  3. API Std 526


    Flanged Steel Pressure Relief Valves, Fifth Edition

    • Historical Version
  4. API 526


    Flanged Steel Pressure Relief Valves

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. API Std 526 Errata 1

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    Errata to Flanged Steel Pressure-relief Valves, Seventh Edition, Includes Errata 1 (2018)