MCC-NH Gas Fitters Practice Exam

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Prepare for the MCC-NH Gas Fitters Test. Study with flashcards and multiple choice questions, each question has hints and explanations. Get ready for your exam!

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What is the purpose of having two closed valves with an opening between them during gas separation?

To allow test medium to escape
To prevent gas from entering the system
To maintain constant pressure in the system
To facilitate easier access for repairs

The correct answer is: To allow test medium to escape

The purpose of having two closed valves with an opening between them during gas separation is primarily to allow a test medium to escape. This configuration is designed to create a controlled environment where the gas can be isolated effectively. When both valves are closed, it ensures that the gas system remains contained, while the opening allows for the introduction or removal of a test medium or a specific gas for measurement, analysis, or verification purposes. This setup is crucial in gas fitting and separation processes, as it enables technicians to safely perform tests without the risk of gas leakage into the atmosphere or contamination of the system. The ability to escape the test medium helps maintain the integrity of the system's function while ensuring that tests can be conducted safely and accurately. Maintaining constant pressure is a function that may occur during this process, but it is not the primary purpose of using two closed valves with an opening.