Abstract: A check valve having a hollow cylindrical body with a ledge extending around its inner periphery between its ends. A bar extends across the hollow body and is attached at its ends to the ledge. A sealing surface is formed on the ledge and on the bar, both in the same plane. Spaced flat bottom lugs rest on the seating surface and have bores that receive the ends of an axle. Plate-like valve members are hinged to the axle and a spring on the axle urges the valve members to a closed position to seal on the seating surface.