Saskatchewan Air Brake Practice Questions - Saskatchewan Air Brake (Endorsement A) Exam

What does a two-way check valve do in an air brake system?

It allows air to flow only from the compressor to the wet tank It directs air from the source with higher pressure to a common line while blocking the lower-pressure source It allows the driver to apply front and rear brakes independently It vents air to the atmosphere when tank pressure exceeds 150 psi

Correct Answer:

It directs air from the source with higher pressure to a common line while blocking the lower-pressure source

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