Which component directly fits into the port on the cylinder valve in a hanger yoke?

• A. Retaining screw
• B. Washer
• C. Nipple
• D. Body

Answer: (C)

The component that directly fits into the port on the cylinder valve in a hanger yoke is the nipple. In the design of a gas delivery system, the nipple is the part that is specifically tailored to connect the gas cylinder to the anesthesia machine through the hanger yoke. It serves to ensure a secure and airtight connection, allowing gas to flow from the cylinder into the delivery system.

The hanger yoke itself features a port that receives the nipple, which is threaded to provide a firm grip and prevent any accidental disconnection. This design is critical for maintaining patient safety and ensuring efficient operation of the anesthesia machine.

Other components like the retaining screw, washer, and body play supporting roles in securing the connection and maintaining the integrity of the system, but they do not engage directly with the cylinder valve the way the nipple does. The retaining screw is typically used to hold the cylinder in place, the washer acts as a seal to prevent leaks, and the body refers to the overall structure of the hanger yoke, which houses these components but does not fit directly into the port. Understanding the roles of each component helps clarify how the anesthesia machine is assembled and functions properly in clinical settings.