Plumber Red Seal · Question
In a drainage system, what is the purpose of a P-trap?
A P-trap holds a water seal that prevents noxious sewer gases from entering the occupied space. This is its primary function in a drainage system.
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Question: In a drainage system, what is the purpose of a P-trap?
Answer options:
- To increase water flow velocity ✅ To prevent sewer gases from entering the building
- To filter solid waste
- To regulate water temperature
Correct answer: To prevent sewer gases from entering the building
Explanation: A P-trap holds a water seal that prevents noxious sewer gases from entering the occupied space. This is its primary function in a drainage system.
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