What must be stamped on every safety valve and relief valve according to CSA B51?

Each safety valve and relief valve must be stamped with an ASME Code Symbol Stamp according to CSA B51, which ensures that the valve meets specific manufacturing and testing standards set forth by the American Society of Mechanical Engineers (ASME). This stamping indicates that the valve has been constructed in compliance with safety regulations and recognized codes, which is crucial for ensuring the safety and reliability of pressure equipment in various applications.

The ASME Code Symbol Stamp serves as a certification that the valve has undergone rigorous testing and meets required performance standards. This is vital for operators and engineers to ensure that the equipment can safely handle the pressures and conditions for which it is designed. The presence of this stamp not only provides confidence in the operational integrity of the valve but also often plays a significant role in regulatory compliance and safety inspections in industrial settings.