Plumber Red Seal · Question
A plumber is installing an indirect heat exchanger in a PEX-AL-PEX radiant heating system. Due to tight quarters, bending the PEX-AL-PEX tubing presents a challenge. What is the minimum bending radius for 16 mm (5/8 inch) PEX-AL-PEX tubing without using a bending support or tool?
For PEX-AL-PEX tubing, the minimum bending radius without the aid of a bending tool is typically specified as 8 times the outside diameter. Exceeding this limit
Start free practice for Plumber Red Seal
177 questions · no signup required · 40 free questions per day
Question: A plumber is installing an indirect heat exchanger in a PEX-AL-PEX radiant heating system. Due to tight quarters, bending the PEX-AL-PEX tubing presents a challenge. What is the minimum bending radius for 16 mm (5/8 inch) PEX-AL-PEX tubing without using a bending support or tool?
Answer options:
- 5 times the outside diameter (OD) ✅ 8 times the outside diameter (OD)
- 10 times the outside diameter (OD)
- 12 times the outside diameter (OD)
Correct answer: 8 times the outside diameter (OD)
Explanation: For PEX-AL-PEX tubing, the minimum bending radius without the aid of a bending tool is typically specified as 8 times the outside diameter. Exceeding this limit without proper support can lead to kinking or damage to the aluminum layer, compromising the pipe's integrity. PEX-a typically has a smaller bending radius, but not PEX-AL-PEX.
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.