Question 3018 of 223 · California Water Treatment Operator Exam
Which of the following is a function of an anti-siphon (back pressure) valve on a chemical feed line?
Exactly one answer is correct.
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Correct answer to question 3018
- B: To prevent the chemical from siphoning into the water line when the pump is off
Explanation
If the injection point is at lower pressure than the tank, chemical could flow freely. A back pressure/anti-siphon valve keeps the line closed unless the pump pushes.
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