Plumber Red Seal · Question
Which of the following is the primary purpose of a 'wet vent' in a plumbing drainage system?
A wet vent serves a dual purpose: it acts as a vent for a fixture trap upstream of it and also carries wastewater from other fixtures downstream. This different
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Question: Which of the following is the primary purpose of a 'wet vent' in a plumbing drainage system?
Answer options: ✅ To provide a vent for a fixture trap and also to serve as a drain for other fixtures
- To prevent backpressure from forming in the drainage system
- To allow for future connection of additional fixtures
- To act as an overflow protection for a fixture drain
Correct answer: To provide a vent for a fixture trap and also to serve as a drain for other fixtures
Explanation: A wet vent serves a dual purpose: it acts as a vent for a fixture trap upstream of it and also carries wastewater from other fixtures downstream. This differentiates it from a conventional dry vent which only provides air, or an overflow protection.
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