Before attaching the regulator to a refilled oxygen cylinder, what should be ensured?

Ensuring that a single sealing gasket is in place before attaching the regulator to a refilled oxygen cylinder is crucial for safety and proper function. The sealing gasket is responsible for creating an airtight seal between the oxygen cylinder and the regulator, preventing leaks of oxygen, which can lead to dangerous situations such as fire hazards or compromised oxygen delivery.

Using a single sealing gasket helps maintain the integrity of the connection, ensuring that the oxygen flows properly without losing pressure or causing leakage. If there were multiple gaskets or if a gasket were missing, it could lead to incomplete sealing, which increases the risk of an oxygen leak.

In contrast, checking the pressure gauge, removing a sealing gasket, or depressurizing the regulator can be steps in handling oxygen equipment; however, they do not contribute directly to ensuring a safe and effective connection before using the oxygen supply. The primary focus must always be on making sure the proper sealing gasket is in place to guarantee a secure and leak-free attachment of the regulator to the cylinder.