Ontario Operator-in-Training (OIT) Practice Exam

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Study for the Ontario Operator-in-Training (OIT) Test. Use flashcards and multiple-choice questions for preparation, with hints and explanations for each. Get ready for your exam!

Practice this question and more.

What is the primary function of check valves in a piping system?

To allow fluid to flow in multiple directions
To ensure fluid flows in only one direction
To increase the pressure of the fluid
To measure the flow rate of the fluid

The correct answer is: To ensure fluid flows in only one direction

The primary function of check valves in a piping system is to ensure that fluid flows in only one direction. Check valves are designed to prevent backflow, which can be critical in maintaining system integrity and preventing potential damage. In various applications, such as in pumps and compressors, allowing fluid to flow backward could lead to inefficiencies or mechanical failures. By automatically closing when flow in the reverse direction occurs, check valves effectively safeguard the system, ensuring reliable and efficient operation. Their design specifically focuses on this unidirectional flow, distinguishing them from other types of valves that may permit bi-directional flow or serve other functions.