Pressure-Relieving Systems for Refinery Service

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  1. MOST RECENT

    API Std 526

    Flanged Steel Pressure-relief Valves, Eighth Edition

    standard by American Petroleum Institute, 08/01/2023.

    Languages: English

    Historical Editions: API Std 526 (2017)API Std 526 (2009)API Std 526 (2002)API 526 (1995)

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  2. HISTORICAL

    API Std 526

    This document has been replaced. View the most recent version.

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

    standard by American Petroleum Institute, 04/01/2009.

    Languages: English

    Amendments, rulings, and supplements: API Std 526 Errata API Std 526 Errata 2 (2012)

    Historical Editions: API Std 526 (2023)API Std 526 (2017)API Std 526 (2002)API 526 (1995)

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  3. HISTORICAL

    API Std 526

    This document has been replaced. View the most recent version.

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

    standard by American Petroleum Institute, 09/01/2017 in English, Russian.

    Languages: English,Russian

    Amendments, rulings, and supplements: API Std 526 Errata 1 (2018)

    Historical Editions: API Std 526 (2023)API Std 526 (2009)API Std 526 (2002)API 526 (1995)

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  4. MOST RECENT

    API Std 526 Errata 1

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

    Amendment by American Petroleum Institute, 09/01/2018.

    Languages: English

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  5. HISTORICAL

    API Std 527

    This document has been replaced. View the most recent version.

    Seat Tightness of Pressure Relief Valves, Fourth Edition

    standard by American Petroleum Institute, 11/01/2014 in Russian, English.

    Languages: English,Russian

    Historical Editions: API Std 527 (R2025) (2020)API Std 527 (R2007) (1991)

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  6. HISTORICAL

    API Std 527 (R2007)

    This document has been replaced. View the most recent version.

    Seat Tightness of Pressure Relief Valves

    standard by American Petroleum Institute, 07/01/1991 in English, Russian.

    Languages: English,Russian

    Historical Editions: API Std 527 (R2025) (2020)API Std 527 (2014)

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  7. MOST RECENT

    API Std 527 (R2025)

    Seat Tightness of Pressure Relief Valves, Fifth Edition

    standard by American Petroleum Institute, 07/01/2020.

    Languages: English

    Historical Editions: API Std 527 (2014)API Std 527 (R2007) (1991)

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    Redlines
  8. HISTORICAL

    API Std 6X

    This document has been replaced. View the most recent version.

    Design Calculations for Pressure-containing Equipment, First Edition

    standard by American Petroleum Institute, 03/01/2014.

    Languages: English

    Amendments, rulings, and supplements: API Std 6X Errata 1 (2014)

    Historical Editions: API Std 6X (2019)

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  9. MOST RECENT

    API Std 6X

    Design Calculations for Pressure-containing Equipment, Second Edition

    standard by American Petroleum Institute, 02/01/2019.

    Languages: English

    Historical Editions: API Std 6X (2014)

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  10. MOST RECENT

    API Std 6X Errata 1

    Errata to Design Calculations for Pressure-containing Equipment, First Edition

    Amendment by American Petroleum Institute, 05/01/2014.

    Languages: English

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