APPS is a sensor that measures the pressure of the gas evaporating from the fuel tank. It is used for closed systems, and the pressure range it covers is somewhat higher than that of normal FTPS. It is applied to the front and back of the active purge pump located between the canister and the purge valve, respectively. Since it should be exposed to gas that is evaporating from fuel, it has excellent chemical resistance. Its robust quality is secured through the proven structures and construction methods.
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