What is a key feature of a vapor recovery nozzle?

A vapor recovery nozzle is specifically designed to capture vapors that are released during the refueling process by creating an effective seal with the vehicle's fill neck. This seal is critical for minimizing hydrocarbon emissions that occur when fuel is dispensed, thereby reducing environmental impact and adhering to regulatory standards. The effectiveness of the vapor recovery system hinges on this sealing capability, ensuring that any vapors that would otherwise escape into the atmosphere are instead directed back into the storage tank.

The other options, while they may describe certain attributes of various components or systems in fuel dispensing applications, do not capture the primary function of the vapor recovery nozzle. Non-corrosive materials, for instance, might be a consideration for durability, but the sealing mechanism is what directly relates to the vapor recovery function. Operating with manual intervention may apply to some systems but is not a definitive feature of all vapor recovery nozzles, especially those designed for automatic operation. A transparent design is not typical for vapor recovery nozzles and does not pertain to their primary purpose or function.