Have you ever wondered on what basis we select a PSV?
The answer to the question depends on several factors such as;

• Pressure Rating and Set Pressure – The PSVs pressure rating must match or exceed the maximum operating pressure of the system it is protecting.
•  Capacity and flow rate – The PSVs capacity and flow rate must be sufficient to handle the maximum possible flow of fluid or gas during an overpressure event.
• Temperature rating – The PSV should be compatible with the operating temperature of the system to prevent degradation or malfunction due to extreme temperatures.
• Material compatibility – The materials used in the construction of the PSV should be compatible with the fluid or gas being relieved.
• Type of PSV – The type of PSV selected (conventional spring-loaded, pilot-operated, or balanced bellow) depends on the backpressure.
•  Vibrations and Pulsations – Systems with vibrations or pulsations require PSVs that can handle such conditions without premature opening or malfunction.

Overall, the selection of a pressure safety valve requires a thorough understanding of the system, its operating conditions, and the potential risks associated with overpressure events.

I hope this was useful to you. Please do share this with your friends.
Take care.
Ajay S. Satpute