What is the minimum pressure at which a try lever test should be performed?

The minimum pressure at which a try lever test should be performed is 5 psi. This specific pressure is crucial for ensuring an accurate assessment of the safety valves' functionality and to verify that they open and close properly under pressure. Conducting the test at this pressure helps to ensure that the valves can effectively relieve excess pressure as designed, contributing to the safety and reliability of the steam system. If the test were performed at a lower pressure, it might not accurately reflect the operating conditions, potentially leading to undetected issues in the valve performance.