Plumber Red Seal · Question
When testing a drainage, waste, and vent (DWV) system with water, what is the minimum required head of water in feet or kPa?
The NPC requires that the DWV system be tested with a 10-foot (30 kPa) head of water. This ensures the system is watertight and can hold pressure without leaks.
Start free practice for Plumber Red Seal
177 questions · no signup required · 40 free questions per day
Question: When testing a drainage, waste, and vent (DWV) system with water, what is the minimum required head of water in feet or kPa?
Answer options:
- 3 feet (9 kPa)
- 5 feet (15 kPa) ✅ 10 feet (30 kPa)
- 15 feet (45 kPa)
Correct answer: 10 feet (30 kPa)
Explanation: The NPC requires that the DWV system be tested with a 10-foot (30 kPa) head of water. This ensures the system is watertight and can hold pressure without leaks.
Start free practice for Plumber Red Seal
177 questions · no signup required · 40 free questions per day
More about Plumber Red Seal
Related Questions
- Before starting a new plumbing installation in a residential basement, what is the primary reason why a plumbe
- A plumber is installing a new kitchen sink in an existing residential dwelling. The sink drain is connected to
- A plumber is installing drainage for a dishwasher in a residential kitchen. The dishwasher P-trap is located 1
- A plumber is asked to install a backflow prevention assembly on a lawn irrigation system connected to the pota
- A plumber is considering the velocity of water in a 50 mm (2") copper pipe supplying a commercial building. Ex
- A plumber is designing the domestic hot water recirculation system for a multi-story residential building. Wha
More for Plumber Red Seal candidates
Practice tests
Question explanations
- Before starting a new plumbing installation in a residential basement, what is the primary reason why a plumbe
- A plumber is installing a new kitchen sink in an existing residential dwelling. The sink drain is connected to
- A plumber is installing drainage for a dishwasher in a residential kitchen. The dishwasher P-trap is located 1
- A plumber is asked to install a backflow prevention assembly on a lawn irrigation system connected to the pota
Ready to practice?
Free, no signup required. Build a wrong-question list as you go.
Start Free Plumber Red Seal Practice →Related courses
Other Canadian certifications candidates often prepare for alongside this one.