What is the sequence for hydro testing internally coated valves?

The sequence for hydro testing internally coated valves typically involves the following steps: First, ensure the valve is clean and free from any debris or contaminants. Next, connect the valve to the hydro test setup and fill it with water, ensuring that all air is purged from the system. Then, gradually pressurize the valve to the specified test pressure while monitoring for leaks. Finally, maintain the pressure for a designated duration before safely depressurizing and inspecting the valve for any signs of failure or coating damage.