When pipeline supply is in use, how should the cylinder be positioned via the check valve?

• A. Open
• B. Closed
• C. Partially open
• D. Disabled

Answer: (B)

The correct positioning of the cylinder via the check valve when the pipeline supply is in use is to have it closed. This is essential because if the cylinder is left open while the pipeline is supplying gas, there could be a risk of backflow from the pipeline into the cylinder, which can lead to contamination or mixing of gases.

Maintaining the cylinder in the closed position ensures that the gas flow is redirected solely from the pipeline, which is typically more reliable and consistent compared to a cylinder. This setup also helps prevent any potential leaks or hazards associated with having multiple gas sources active simultaneously.

Thus, having the cylinder closed allows the anesthesia machine to operate safely and effectively when connected to pipeline gas, preventing complications that could arise from improper gas management.