ATL Fuel Cell Discriminator Valve, 1.500" Male Inlet, 1.500" Male Outlet, External Mount, Plastic, Clear

These unique, ATL discriminator vent valves automatically close to prevent fuel loss during racing and refueling. By discriminating between vapor and liquid fuel, they prevent gasoline spillage in the pits and on the race track. These see-through vent valves also eliminate the need for a dry break or catch can and will fit any vent hose up to a 1 1/2 in. diameter.