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About This Item


Full Description

This Code provides standards for conducting and reporting tests on reclosing and nonreclosing pressure relief devices normally used to terminate an abnormal internal or external rise in pressure above a predetermined design value in boilers, pressure vessels, and related piping equipment. This Code covers the methods and procedures to determine relieving capacity and additional operating characteristics that may be required for certification or other purposes by other codes. This is accomplished by dividing the Code into three parts: Part I, "General"; Part II, "Flow Capacity Testing"; and Part III, "In-Service and Bench Testing."

This Code does not necessarily cover the methods and procedures to satisfy operating and other conditions as may be required by other codes. Establishment of pressure relief device ratings and rules of safe construction do not fall within the province of this Code.

Document History

  1. ASME PTC 25-2014

    Pressure Relief Devices

    • Most Recent
  2. ASME PTC 25-2008


    Pressure Relief Devices

    • Historical Version
  3. ASME PTC 25-2001

    Pressure Relief Devices

    • Historical Version