Double Union

High school (ages 12+)
Science & Technology

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/double-union

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. What is the design principle?Facilitates easy disassembly and provides controlled flexibility to absorb mechanical stresses
2. What is a Double Union and why is it used in pipes?A Double Union is a special pipe fitting that lets pipes move a little while staying sealed. It helps pipes handle heat changes and vibrations so they don’t leak or break.
3. How does a Double Union keep pipes from leaking?It has two threaded ends and a central nut that tightens the seal. The design lets the pipes rotate a bit and stretch, preventing cracks.

Fluid System: A network of pipes, valves, and components designed to transport or control the flow of liquids or gases.
Fatigue Failure: The weakening of a material caused by repeatedly applied loads, which can lead to fracture.
Stress Concentration: A location in an object where the stress is significantly higher than the surrounding area, often due to geometric discontinuities.