What is a frequent cause of serious accidents related to valves?

The frequent cause of serious accidents related to valves can often be attributed to using wrong materials of construction. When valves are made from materials that are not suitable for the specific conditions they will encounter, such as pressure, temperature, or the chemical composition of the fluids they will handle, this can lead to failure. For instance, if a valve is made from a material that is not resistant to corrosion but will be exposed to a corrosive substance, it may degrade over time, leading to leaks or catastrophic failure. This emphasizes the importance of selecting the appropriate materials based on the operating conditions to ensure long-term safety and reliability.

In contrast, while improper installation, insufficient maintenance, and overpressure conditions can undeniably lead to accidents, they are more often related to human error or operational practices rather than the inherent material properties of the valve itself. Proper material selection plays a critical role in preventing accidents, making it a vital consideration in valve design and application.