What should be done to the pressure setting of a pressure relief valve during testing?

The pressure relief valve is a critical safety device designed to protect pressurized systems from excessive pressure. During testing, the pressure setting of the valve should match the system's design pressure to ensure it operates correctly under normal operating conditions. This alignment ensures that the valve will open at the correct pressure to relieve excessive pressure and prevent potential system failures or hazards.

Setting the pressure relief valve to match the system's design pressure allows for consistent performance and reliable safety. This is essential because if the valve is set too low, it may open too frequently, causing unnecessary interruptions in the system. Conversely, if it is set too high, it may not open when needed, allowing pressure to build to dangerous levels. Therefore, matching the valve setting to the system's design pressure is critical for maintaining the integrity and safety of the system during operation.