What do manufacturers need to indicate on the valve body?

Manufacturers are required to indicate service ratings on the valve body to ensure that users can ascertain the appropriate conditions under which the valve can safely operate. Service ratings provide critical information regarding the pressure, temperature, and specific applications for which the valve is suitable, thereby helping to prevent misuse that could lead to safety issues, equipment failure, or leaks.

Understanding the service ratings is essential for maintaining safety and efficiency in the handling of compressed natural gas, as they guide technicians and operators in selecting the correct valve for specific operational needs. While the other options—such as material origin, color coding, and installation date—are relevant in different contexts, they do not carry the same imperative for safety and operational integrity as service ratings do.