This unit is developed to dispense petroleum based fuels like gasoline, diesel fuel, kerosene, aviation fuel, fuel oil, and unleaded fuels. It is constructed with a pressure relief valve (per U.L. Specification 79) that restricts fuel outlet pressure to less than 50 p.s.i. (3.5 bar). The fuel relief valve opens and vents excess pressure, and can be plumbed to return any bleed off fuel back to the storage container. It can be adapted for use with high volume transfer, bulk unloading, or refueling.