Fuel Tank Fast Fill Vent Caterpillar 6263355

The Fuel Tank Fast Fill Vent provides a controlled venting path during high‑speed refueling to allow air to escape from the fuel tank as fuel enters. This controlled venting helps maintain stable internal pressure, reduces the chance of fuel splash‑back, and prevents premature nozzle shutoff. The vent supports smooth fuel flow into the tank by preventing trapped air pockets that can restrict filling speed. It also helps avoid over‑pressurization that can lead to tank distortion or overflow. Attributes:• Allows air to escape during fast‑fill fueling.• Helps maintain stable pressure inside the fuel tank.• Rollover poppet actuates closed at 20 degree Celsius ± 2 degree Celsius.• Venting is one‑way from the tank to the atmosphere.• Cracking pressure is 0.8 to 1.2 pound per square inch for the normally closed poppet to open.• Component is compliant with ISO 21507 inversion test requirements.Applications: The Fuel Tank Fast Fill Vent is installed on fuel tanks that use high‑flow fast‑fill systems. It helps release displaced air, maintain pressure balance, and prevent overflow during rapid fueling operations.