What is the role of the washer in the hanger yoke?

• A. To increase pressure
• B. To help form the seal between the cylinder and yoke
• C. To enable gas flow
• D. To prevent leaks

Answer: (B)

The washer in the hanger yoke plays a crucial role in establishing a proper seal between the gas cylinder and the yoke itself. This seal is vital to ensure that the gas stored in the cylinder can flow into the anesthesia machine without the risk of leakage. A well-constructed seal maximizes efficiency and safety, preventing gas from escaping and allowing for the reliable administration of anesthesia.

While other choices mention aspects like pressure, enabling gas flow, and preventing leaks, it’s the washer's primary function to ensure that a tight seal is formed during the connection of the gas cylinder to the hanger yoke. This aspect is essential for the safe and effective delivery of anesthetic gases during medical procedures.