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Questions and Answers
What is the property of PEX tubing that allows it to return to its original diameter when partially expanded?
What is the property of PEX tubing that allows it to return to its original diameter when partially expanded?
- Elasticity
- Conductivity
- Shape memory (correct)
- Durability
How is a cold-expansion joint formed using PEX tubing?
How is a cold-expansion joint formed using PEX tubing?
- By slipping a reinforcing PEX ring over the tube end and using a hydraulic expander tool (correct)
- By heating the tube ends with a torch
- By using adhesive to connect the tube ends
- By welding the tube ends together
What type of mandrel does the hydraulic expander tool have for creating a cold-expansion joint with PEX tubing?
What type of mandrel does the hydraulic expander tool have for creating a cold-expansion joint with PEX tubing?
- Serrated face mandrel (correct)
- Curved mandrel
- Square-shaped mandrel
- Smooth cylindrical mandrel
What purpose does chamfering serve in preparing PEX-AL-PEX tubing for cold-expansion fittings?
What purpose does chamfering serve in preparing PEX-AL-PEX tubing for cold-expansion fittings?
What effect does chamfering have on the aluminum layer of a PEX-AL-PEX tube?
What effect does chamfering have on the aluminum layer of a PEX-AL-PEX tube?
Which part of the expansion tool creates the expansion force in PEX tubing connections?
Which part of the expansion tool creates the expansion force in PEX tubing connections?
Why do cold-expansion fittings use a split-tapered mandrel with serrated faces?
Why do cold-expansion fittings use a split-tapered mandrel with serrated faces?
What is the primary advantage of using cold-expansion connections with PEX tubing?
What is the primary advantage of using cold-expansion connections with PEX tubing?
What does the special tool do when chamfering the inside surface of PEX-AL-PEX tubing?
What does the special tool do when chamfering the inside surface of PEX-AL-PEX tubing?
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