New Mexico Pipe Fitter Journeyman (JPF) Practice Exam

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Study for the New Mexico Pipe Fitter Journeyman Exam. Prepare with flashcards and multiple choice questions, each question comes with hints and explanations. Get ready for your exam!

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What is essential for the proper installation of a check valve?

The disk must remain open at all times.
The pipeline must slope upwards.
The disk should close by gravity.
The check valve should be installed horizontally only.

The correct answer is: The disk should close by gravity.

For the proper installation of a check valve, it is essential for the disk to close by gravity. This ensures that the valve functions correctly by allowing the flow of fluid in one direction and preventing backflow. The gravity-assisted closure mechanism helps the disk return to its seat when the flow stops or reverses, thereby effectively maintaining the integrity of the system and protecting downstream components. The design of check valves typically includes a disk that can pivot or slide; utilizing gravity aids in ensuring that the disk fully seats against the valve body when not in use. This reduces the risk of leaks and ensures reliable operation. Considerations on slope and orientation are important in other contexts, but they do not directly ensure the correct functioning of the check valve in terms of its fundamental operation. Proper alignment and orientation can help facilitate fluid flow and prevent issues, but the principal function hinges on the disk's ability to close effectively due to gravity.