What is the function of a shuttle valve in a hydraulic circuit?

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Prepare for the United Airlines Flight Simulator Technician Test with this comprehensive guide. Study with multiple-choice questions and detailed explanations to ace your exam and secure your dream career as a flight simulator technician with United Airlines!

Multiple Choice

What is the function of a shuttle valve in a hydraulic circuit?

Explanation:
A shuttle valve acts as a pressure selector in a hydraulic circuit. It automatically connects the actuator to whichever source has the higher pressure, using a shuttle (ball or plug) that shifts with pressure to block the other source. This automatic switchover provides redundancy so either pump or source can drive the actuator if the other drops in pressure, while preventing backflow into the unused source. It doesn’t change temperature, filter impurities, or store hydraulic energy.

A shuttle valve acts as a pressure selector in a hydraulic circuit. It automatically connects the actuator to whichever source has the higher pressure, using a shuttle (ball or plug) that shifts with pressure to block the other source. This automatic switchover provides redundancy so either pump or source can drive the actuator if the other drops in pressure, while preventing backflow into the unused source. It doesn’t change temperature, filter impurities, or store hydraulic energy.

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