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These standards/specifications exist to ensure that certain types of valves are designed in a consistent method meeting certain requirements ensuring that, regardless of brand, the general valve characteristics will remain the same.

ASME - American Society of Mechanical Engineers. Founded in 1880 this organization works to ensure standards are met/improved to ensure safety and efficiency in engineering practices. www.asme.org

ANSI - American National Standards Institute www.ansi.org

Click here for more information on common valve ASME/ANSI Standards

API Standards for Typical Valve Requirements
API - American Petroleum Institute www.api.org

Click here for more information on common valve API standards

More information on other standards including common MSS, CSA, ISO, NACE, GOST standards can be found here

Contact - The Valve Pipeline

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Valve Tip:
Check valves should only be used in the horizontal position except when fitted with a spring or mechanism to help with closing.