During a renovation project, a plumber needs to connect a new 20 mm PEX-a hot water line to an existing manifold. What is the acceptable bend radius for PEX-a tubing when forming a curve without using a fitting?

Question: During a renovation project, a plumber needs to connect a new 20 mm PEX-a hot water line to an existing manifold. What is the acceptable bend radius for PEX-a tubing when forming a curve without using a fitting?

Answer options:

• 1 to 2 times the outside diameter
• 3 to 5 times the outside diameter ✅ 6 to 8 times the outside diameter
• 9 to 11 times the outside diameter

Correct answer: 6 to 8 times the outside diameter

Explanation: PEX-a tubing generally allows for a bend radius of 6 to 8 times its outside diameter without kinking or requiring a bend support. Bending it too tightly (e.g., 1 to 5 times) will likely cause kinking, while a much larger radius would be inefficient for space saving.