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About This Item

 

Full Description

This standard covers design, materials, face-to-face dimensions; pressure-temperature ratings; and examination, inspection, and test requirements for gray iron, ductile iron, bronze, steel, nickel-base alloy, or special alloy butterfly valves that provide tight shutoff in the closed position and are suitable for flow regulation.

 

Document History

  1. API Std 609


    Butterfly Valves: Double-flanged, Lug- and Wafer-type, and Butt-welding Ends, Ninth Edition

    • Most Recent
  2. API Std 609


    Butterfly Valves: Double-flanged, Lug- and Wafer-type, Eighth Edition, Includes Errata (April 2017)

    • Historical Version
  3. API Std 609


    Butterfly Valves: Double-flanged, Lug- and Wafer-type, Seventh Edition

    • Historical Version
  4. API Std 609

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    Butterfly Valves: Double Flanged, Lug- and Wafer-Type

    • Historical Version
  5. API 609


    Butterfly Valves: Lug- and Wafer-Type

    • Historical Version