Heavy Duty Equipment Technician Red Seal Exam Prep · Question
Which of the following components in a heavy-duty air brake system is responsible for protecting the air tanks and air lines from excessive pressure?
The safety valve is a crucial component in the air brake system, designed to open and vent air if the system pressure exceeds a predetermined maximum, typically
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Question: Which of the following components in a heavy-duty air brake system is responsible for protecting the air tanks and air lines from excessive pressure?
Answer options: ✅ The safety valve.
- The foot valve.
- The spring brakes.
- The service brake chambers.
Correct answer: The safety valve.
Explanation: The safety valve is a crucial component in the air brake system, designed to open and vent air if the system pressure exceeds a predetermined maximum, typically around 1030 kPa to 1050 kPa, thus preventing damage to air tanks and other components from over-pressurization. The foot valve controls service brake application, spring brakes are for parking and emergency, and service brake chambers apply the brakes.
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