API Std 526 Historical

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

standard by American Petroleum Institute , 04/01/2009

Amendments Available

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Full Description

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. See more

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Document History

  1. API Std 526


    Flanged Steel Pressure-relief Valves, Eighth Edition

    • Most Recent

  2. API Std 526


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

    • Historical Version

  3. API Std 526

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

    • Historical Version

  4. API Std 526


    Flanged Steel Pressure Relief Valves, Fifth Edition

    • Historical Version

  5. API 526


    Flanged Steel Pressure Relief Valves

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. API Std 526 Errata 2

    Free
    Download


    Errata 2 to Flanged Steel Pressure Relief Valves, Fifth Edition, Includes Errata (May 2009), Errata 2 (Oct 2012)

  2. API Std 526 Errata

    Free
    Download


    Errata for Flanged Steel Pressure-relief Valves, Sixth Edition

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Product Details

Edition:

6th

Published:

04/01/2009

Number of Pages:

43

File Size:

1 file

Redline File Size:

2 files

Product Code(s):

C52606, C, C52606, C, C, C52606

Note:

This product is restricted and cannot be purchased in the following countries Ukraine, Russia, Cuba, Syria, Belarus, Iran, North Korea