Abstract 

Specifies requirements for two types of predominantly key-operated valves for underground use with flanges or spigot ends or socket ends. The two types shall be specified as type A or type B and shall include the following features: inside screw stem; wedge or parallel obturator; metallic or elastomeric obturator seatings; metallic or elastomeric body seatings; ferrous metal and/or copper alloy trims; T-key operation; ring key and bar operation. Type A valves are for T-key operation; type B valves are for ring key and bar operation.


General information

  • Status :  Withdrawn
    Publication date : 1988-12
  • Edition : 1
    Number of pages : 10
  • :
    ISO/TC 153
    Valves
  • 23.060.30
    Gate valves
    91.140.60
    Water supply systems

Life cycle

A standard is reviewed every 5 years



Revisions / Corrigenda

  • Now withdrawn
    ISO 7259:1988

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