Discussion Overview
The discussion centers on identifying standards for the marking of pressure ratings on shut-off valves in the USA, specifically those that are not cylinder valves. Participants seek to clarify existing regulations or standards such as CGA, ANSI, or others relevant to this topic.
Discussion Character
- Technical explanation, Debate/contested
Main Points Raised
- Blake J inquires about the existence of a standard for marking pressure ratings on shut-off valves in the USA.
- Travis suggests several standards including ASME B16.34, B16.5, API Spec 6D, and mentions API 60x standards, as well as ASME 31.3 and 31.1, indicating their relevance to pressure and temperature ratings.
- Travis also references the Boiler and Pressure Vessel Code (BPVC) Sections II and VIII as important standards for consideration.
- A later reply notes the existence of additional API standards related to the procurement of valves and fittings, but the specific standards are not recalled.
Areas of Agreement / Disagreement
Participants provide various standards that may be relevant, but there is no consensus on a single standard specifically addressing the marking of pressure ratings on shut-off valves. The discussion remains open with multiple viewpoints presented.
Contextual Notes
Some participants express uncertainty about the completeness of the standards mentioned and the specific applicability to shut-off valves, indicating a need for further clarification on definitions and scope.