Brand: Fuel Safe Fuel Cells
This vent fitting mounts in a 7/8" hole in the fill plate of your fuel cell. The 10AN male fitting allows easy hookup of a -10 AN or 5/8" rubber vent line. Includes mounting nut and sealing washer.
The valve is not spring-loaded. It depends on gravity to close the valve and stops the flow of fuel only in the event of a rollover.