How often must a liquid service safety relief valve be serviced or replaced?

The correct interval for servicing or replacing a liquid service safety relief valve is typically set at five years. This timeframe is established based on safety and regulatory guidelines to ensure that the valves function properly, providing effective relief during overpressure conditions. Regular maintenance is crucial because safety relief valves play a critical role in preventing hazardous situations that can arise due to excessive pressure in piping systems.

Over time, components within the valve can degrade or become less effective due to factors like corrosion, wear, or buildup of debris. A five-year service interval allows for inspection, testing, and if necessary, maintenance or replacement of the valve to ensure it remains reliable and capable of performing its safety function when needed.

While other intervals might be appropriate for different types of valves or specific applications, the five-year mark is generally considered a reasonable balance between safety and practicality for liquid service safety relief valves in many jurisdictions and industries. Regular adherence to this schedule is part of responsible system management and helps maintain compliance with safety regulations.