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Questions and Answers
What happens to the trim air pressure regulating valve when the solenoid is de-energized?
What happens to the trim air pressure regulating valve when the solenoid is de-energized?
How does the trim air pressure regulating valve open?
How does the trim air pressure regulating valve open?
What is the primary function of the trim air pressure regulating valve?
What is the primary function of the trim air pressure regulating valve?
What component monitors the position of the trim air pressure regulating valve?
What component monitors the position of the trim air pressure regulating valve?
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The downstream pressure regulated by the trim air pressure regulating valve is dependent on what factor?
The downstream pressure regulated by the trim air pressure regulating valve is dependent on what factor?
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Study Notes
Trim Air Pressure Regulating Valve
- The trim air pressure regulating valve is operated by a solenoid and air pressure.
- The valve is closed by a spring when the solenoid is de-energized.
- When the solenoid is energized, the valve opens due to air pressure from the pneumatic system.
- The valve regulates downstream pressure, typically 4 psi above cabin pressure.
- The specific pressure value varies between aircraft types.
- The valve position is constantly monitored by the zone controller using a limit switch.
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Description
This quiz covers the functionality and operation of the trim air pressure regulating valve in aircraft systems. It includes details about the solenoid operation, valve closure, and pressure regulation in relation to cabin pressure. Test your understanding of this essential component in pneumatic systems.
