Petroleum and natural gas industries. Pipeline transportation systems. Pipeline valves1 Scope This International Standard specifies requirements and provides recommendations 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. This International Standard is not applicable to subsea pipeline valves, as they are covered by a separate International Standard (ISO 14723). This

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Decalcification

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Performance measurement

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Gas suppliers

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