Is EVAP and purge valve the same thing?

The purge valve, also known as the canister purge valve, is part of your vehicle's evaporative emission control (EVAP) system. It traps the fuel vapors created in your fuel tank and prevents them from escaping into the air. via

Does a purge valve click?

When the engine is running and fully warmed up, the engine computer pulses the purge valve open allowing some amount of fuel vapors to be purged from the charcoal canister and burned in the engine. When the purge valve operates, it might produce a rhythmic clicking noise under the hood. via

How do I find an EVAP leak in my car? (video)

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