How often should a pressure relief valve be serviced?
The service and inspection interval for a pressure relief valve will vary depending on the installation, service conditions and type of valve in use. Each valve in a plant should be placed on a specific service schedule based on the users operating experience for each valve in a give application. Valves in corrosive applications will require a shorter maintenance interval than valves used on clean services. Other conditions that may effect the service interval are low differential between operating and set pressure, frequent valve operation, and excessive system vibration. American Petroleum Institute Standard 576, Inspection of Pressure-Relieving Devices can provide additional guidance.
