Single or dual shut-off valves When connected fuel will flow and when disconnected fuel will not flow Use dual shut-off for fuel tanks equipped with a crossover line For fuel supply (fuel tank to carburetor), use the original quick disconnect couplings with the single shut-off valve Available for 1/4in. i.d. fuel line Capable of withstanding temperatures of -40 deg. F to 180 deg. F Made in the U.S.A.