The purpose of this International Standard is to establish basic requirements and practices for socket-welding, buttwelding, threaded and flanged end, steel gate, globe and check valves with reduced body seat openings, whose general construction parallels that specified by the American Petroleum Institute standard API 602 and the British Standard BS 5352.
API Std 602
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Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries, Eighth Edition
Category: API
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