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API Std 609

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

standard by American Petroleum Institute , 02/01/2016

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Full Description

Please note that the API Monogram Program effective date for the this document's next edition is October 2021. Until then, this edition will still be considered active and not historical.

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-based alloy, or special alloy butterfly valves.

The following two categories of butterfly valves are included.
    a) Category A--Manufacturer's rated cold workingpressure (CWP) butterfly valves, usually with aconcentric disc and seat configuration. Sizes coveredare NPS 2 to NPS 48 for valves having ASME Class125 or Class 150 flange bolting patterns.

    b) Category B--ASME Class and pressure-temperaturerated butterfly valves that have an offset seat andeither an eccentric or a concentric disc configuration.These valves may have a seat rating less than thebody rating. Sizes covered are listed below.

  • For lug and wafer, Class 150: NPS 3 to NPS 48.
  • For lug and wafer, Class 300 and Class 600: NPS 3 to NPS 48.
  • For double-flanged long pattern, Class 150, 300, and 600: NPS 3 to NPS 36.
  • For double-flanged short pattern, Class 150 and Class 300: NPS 3 to NPS 48.
  • For double-flanged short pattern, Class 600: NPS 3 to NPS 24.
Valve configurations include double flanged, lug- and wafer-type with facings that permits installation between ASME and MSS flanges that conform to the standards and specifications listed in Section 2. Typical valve construction and nomenclature for valve parts are shown in Annex C.
 

Product Details

Edition:
8th
Published:
02/01/2016
Number of Pages:
36
File Size:
1 file , 780 KB
Redline File Size:
2 files , 4.6 MB
Product Code(s):
C60908, C60908, C60908
Note:
This product is unavailable in Russia, Cuba, Syria, North Korea, Ukraine, Belarus, Iran
 

Document History

  1. API Std 609


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

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  2. API Std 609

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    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


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

    • Historical Version

  5. API 609


    Butterfly Valves: Lug- and Wafer-Type

    • Historical Version
 

Amendments, rulings, supplements, and errata

  1. API Std 609 Errata

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    Errata to Butterfly Valves: Double-flanged, Lug- and Wafer-type, Eighth Edition