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BC Air Brake Practice · Question

What is the purpose of a one-way check valve often found between the wet tank and the dry tank in an air brake system?

A one-way check valve ensures that air can only flow from the wet tank to the dry tank, preventing a loss of protected air pressure from the dry tank if there's

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Question: What is the purpose of a one-way check valve often found between the wet tank and the dry tank in an air brake system?

Answer options: ✅ To prevent air from flowing back from the dry tank to the wet tank.

  • To allow air to flow in both directions for quick pressure equalization.
  • To release excess air pressure from the wet tank.
  • To filter moisture from the air before it reaches the dry tank.

Correct answer: To prevent air from flowing back from the dry tank to the wet tank.

Explanation: A one-way check valve ensures that air can only flow from the wet tank to the dry tank, preventing a loss of protected air pressure from the dry tank if there's a leak in the wet tank or its connections.

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