Plumber Red Seal · Question
What is the primary function of a circuit vent?
Circuit venting is a specific method used to vent a horizontal branch drain that serves a battery of fixtures (two or more). The vent connects downstream of the
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Question: What is the primary function of a circuit vent?
Answer options:
- To vent a single, isolated fixture.
- To serve as a secondary vent for a drainage stack. ✅ To vent a battery of at least two floor-outlet fixtures like toilets or floor drains.
- To provide air circulation between the sanitary and storm drainage systems.
Correct answer: To vent a battery of at least two floor-outlet fixtures like toilets or floor drains.
Explanation: Circuit venting is a specific method used to vent a horizontal branch drain that serves a battery of fixtures (two or more). The vent connects downstream of the last fixture and upstream of the first, protecting the traps of all fixtures in the circuit.
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