Plumber Red Seal · Question
A floor drain is installed in a room where it is not used frequently. What is the most important feature to ensure its trap does not lose its seal due to evaporation?
A trap seal primer is a device that periodically releases a small amount of water into the floor drain's P-trap. This replenishes water lost to evaporation, mai
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Question: A floor drain is installed in a room where it is not used frequently. What is the most important feature to ensure its trap does not lose its seal due to evaporation?
Answer options:
- A backwater valve.
- A large-diameter trap. ✅ A trap seal primer connection.
- A dome-style strainer.
Correct answer: A trap seal primer connection.
Explanation: A trap seal primer is a device that periodically releases a small amount of water into the floor drain's P-trap. This replenishes water lost to evaporation, maintaining the trap's seal and preventing sewer gases from entering the room.
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