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Washington Plumbing Practice 4

Practice 4 for Plumbing Exam learners in Washington: 25 questions, explained answers, and a review routine.

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Question 1

1

What is the function of an air chamber installed at a quick-closing valve?

Question 2

2

Which copper joining method uses no open flame and a crimp ring?

Question 3

3

What does the term 'developed length' of a pipe mean for sizing?

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