What is the regulated discharge pressure for the pressure regulating shut off valves (PRSOV) in the CRJ-700?

The regulated discharge pressure for the pressure regulating shut off valves (PRSOV) in the CRJ-700 is indeed 45 psi +/-3. This specification is crucial for ensuring that the aircraft's pneumatic systems operate within the designed parameters, providing reliable and consistent performance.

The PRSOV plays a significant role in controlling the pressure of the air supplied to various systems, including environmental control and engine start. By maintaining the correct pressure, the PRSOV helps prevent over-pressurization, which could lead to system malfunctions or failures.

Understanding the correct pressure setpoint ensures that maintenance personnel can accurately assess whether the valves are functioning properly during inspections. This knowledge is fundamental for both operational safety and effective maintenance practices, contributing to the overall reliability of the aircraft's systems.