Axial flow check valve has the function of general check valve, there are shock-absorbing springs, with muffling and shock-absorbing effect. Convenient for users to overhaul the site, the unique axial flow structure has a small flow resistance, large flow, small external dimensions, etc., can be used in oil and gas gathering and transmission pipeline network, oil pump outlet, suitable for oil, gas, water, slurry and other pipeline systems, to prevent the medium from backflow use.