8. Which of the following best describes low loss fittings on refrigerant recovery devices used to recover CFCs, HCFCs, and HFCs?

They can be either manually closed or automatically closed when disconnected to prevent loss of refrigerant from hoses.
They are used to connect the recovery device to an appliance and leak only small amounts of refrigerant during use.
They are used to connect the recovery device to an appliance and must be discarded after each use.
They eliminate oil loss during recovery.

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