Plumber Red Seal · Question
What is the maximum permissible static pressure allowed in a residential potable water system, as specified by the National Plumbing Code of Canada (NPC)?
The National Plumbing Code of Canada (NPC) dictates that the maximum static pressure in a residential potable water system should not exceed 350 kPa (50 psi). I
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Question: What is the maximum permissible static pressure allowed in a residential potable water system, as specified by the National Plumbing Code of Canada (NPC)?
Answer options: ✅ 350 kPa (50 psi)
- 550 kPa (80 psi)
- 690 kPa (100 psi)
- 825 kPa (120 psi)
Correct answer: 350 kPa (50 psi)
Explanation: The National Plumbing Code of Canada (NPC) dictates that the maximum static pressure in a residential potable water system should not exceed 350 kPa (50 psi). If the incoming pressure is higher, a pressure reducing valve must be installed.
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