Bulkhead Discriminator Valves
Similar to a check valve or vent, discriminator valves prevent fuel from traveling up the vent line during filling when the tank is full. Utilizing a float, the valve shuts off air flow when fuel enters the chamber. The valve also operates independently and will close/shut off if overturned regardless if there is fuel in the chamber. Bulkhead discriminator valves can be located directly on the fill plate, eliminating the need for an additional check valve. Not suitable for use with dry break or pressurized fill systems.