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What is New with API 6D?
The American Petroleum Institute (API) specification 6D defines the requirements for design, manufacturing, and testing of axial, ball, check, gate, and plug valves. In the United States, it is referenced by the Bureau of Safety and Environmental Enforcement (BSEE) in the Code of Federal Regulations (CFR); the Pipeline and Hazardous Materials Safety Administration (PHMSA); and by state regulators.