Valve pressure marking standard

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SUMMARY

The discussion centers on identifying standards for marking pressure ratings on shut-off valves in the USA. Key standards mentioned include ASME B16.34, which covers pressure and temperature ratings for valves, and API Spec 6D, which outlines design and testing requirements for various valve types. Additional relevant standards include ASME B16.5, ASME 31.3 for process piping, and ASME 31.1 for power piping. The Boiler and Pressure Vessel Code (BPVC) Sections II and VIII are also critical for compliance in this area.

PREREQUISITES
  • Understanding of ASME B16.34 and its application to valve standards
  • Familiarity with API Spec 6D and its requirements for valve design
  • Knowledge of ASME 31.3 and ASME 31.1 for piping standards
  • Awareness of BPVC Sections II and VIII for pressure vessel compliance
NEXT STEPS
  • Research ASME B16.34 for detailed specifications on valve pressure ratings
  • Explore API Spec 6D for comprehensive guidelines on valve manufacturing and testing
  • Study ASME 31.3 and ASME 31.1 to understand process and power piping standards
  • Review BPVC Sections II and VIII to ensure compliance with pressure vessel regulations
USEFUL FOR

Engineers, valve manufacturers, and quality assurance professionals involved in the design, testing, and compliance of shut-off valves in industrial applications.

blakej
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Hi,
I'm looking for a standard (CGA, ANSI, ISI, etc.) which lays out requirements for the marking of pressure ratings on shut off valves (which aren't cylinder valves) in the USA. Does anyone know what it is or if it even exists? Any insights are much appreciated.
Thanks!
Blake J
 
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ASME B16.34 is a pretty complete standard for piping, fittings, and valves regarding pressure and temperature rating. There's also B16.5.

API Spec 6D gives the requirements and recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline systems. (as per Eng. toolbox)

The API 60x (that is, 600, 609, etc) are standards for various types of valves.

ASME 31.3 for Process Piping might be useful as well, or 31.1 for power piping (typically dealing with boilers/high pressure and temperature fluid piping)

EDIT: Jeez, how could I forget BPVC (Boiler and Pressure Vessel Code) Sections II and VIII.
 
Last edited:
Thanks for the suggestions Travis! I will check out those standards.
 
There are a couple more API standards regarding the procurement of valves and fittings but I don't remember which ones they are. Maybe someone with more experience in the manufacturing of valves will chime in, I'm more on the end-user side.
 

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