Plumber Red Seal · Question
What is the maximum permissible distance for a water heater relief valve discharge pipe to be from the floor into an indirect waste receptor?
The discharge pipe from a water heater relief valve should terminate no more than 12 inches (300 mm) above the floor and into an indirect waste receptor. This p
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Question: What is the maximum permissible distance for a water heater relief valve discharge pipe to be from the floor into an indirect waste receptor?
Answer options:
- 6 inches (150 mm) ✅ 12 inches (300 mm)
- 24 inches (600 mm)
- 36 inches (900 mm)
Correct answer: 12 inches (300 mm)
Explanation: The discharge pipe from a water heater relief valve should terminate no more than 12 inches (300 mm) above the floor and into an indirect waste receptor. This prevents scalding and provides a clear indication of valve discharge.
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