Continue on: What is Backpressure, Superimposed Backpressure?
Built-up Backpressure of PRV;
Built-up back pressure is the pressure that will occur when the pressure relief valve (PRV) opens and the pressure is released. This is because there Head/friction loss (Pressure drop) in the pressure relief system:
Example of PRV Backpressure;
Example of Backpressure Calculation of Pressure Relief Valves (PRV) in the system
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