US Patent 10591085 One-way storage basin valve

A one-way valve is provided. The one-way valve includes a base having a first ring wall including a first aperture disposed therethrough. The base further includes a second ring wall coaxial with the first ring wall. The second ring wall includes a second aperture disposed therethrough and angularly offset from the first aperture. The base further includes a central arching surface. The one-way valve includes a diaphragm disposed on the central arching surface. The one-way valve further includes a cover secured to the base and defining an annular skirt region. The one-way valve further includes a seal disposed in the annular skirt region.