scope:

This European Standard specifies requirements and gives recomm endations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems meeting the requirements of ISO 13623 for the petroleum and natural gas industries. On-land supply systems used by the gas supply industry are excluded from the scope of this standard. Annex A of this European Standard provides guidelines to assist the purchaser with valve type selection and specification of specific requirements when ordering valves.