ISO 7259:1988
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ISO 7259:1988
13914

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 

  •  :  Withdrawn
     : 1988-12
  •  : 1
     : 10
  •  : ISO/TC 153 Valves
  •  :
    23.060.30 Gate valves
    91.140.60 Water supply systems

Life cycle


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