How should outlets be closed if they are not used immediately after disconnecting an appliance?

When disconnecting an appliance from a gas system, it is essential to ensure that any open outlets are properly sealed to prevent gas leaks and maintain safety. Closing outlets with a gastight plug or cap is the recommended method because it provides a secure and reliable seal that prevents any gas from escaping. This is crucial in preventing accidents and ensuring that the integrity of the gas system is maintained until the outlet is needed again.

Using a gastight plug or cap helps to conform to safety regulations and best practices in the industry. This approach adds a layer of protection by ensuring that no contaminants or moisture can enter the outlet, which could potentially lead to issues once the appliance is reconnected or if the outlet is used for another appliance in the future.

Other methods, such as using a plastic cap, leaving the outlet open, or sealing it with tape, do not provide the same level of safety or reliability. A plastic cap may not create a perfect seal or withstand pressure changes. Leaving an outlet open poses a significant risk of leaks or contaminant ingress, while using tape is not a durable or secure solution for gas outlets. Hence, sealing the outlet with a gastight plug or cap is the most effective and safest way to manage unused gas outlets.