Which valves in the CRJ bleed system are designated as PRSOVs?

• A. Engine PRSOVs
• B. APU LCVs
• C. 6th stage bleed valves
• D. HP bleed valves

Answer: (A)

PRSOVs are the valve that handle the engine bleed air path as the pressure relief shut-off component. In the CRJ bleed system, each engine feeds bleed air to the packs, and the valve in that engine’s bleed line is designated as a PRSOV. It serves two roles: it shuts off bleed air from that engine when commanded, and it relieves excess pressure to protect the system if something downstream blocks or over-pressurizes the line. That specific designation and function belong to the engine bleed path valves. The other items—APU bleed control valves, 6th stage bleed valves, and HP bleed valves—have different roles in the system and are not labeled as PRSOVs.