Abstract: A valve assembly includes a valve body and a seat defining an outlet. The valve assembly also includes a float disposed inside the valve body and is movable between a first position and a second position relative to the valve body. The valve assembly further includes a support coupled to the float and is movable with the float between the first and second positions. The valve assembly also includes a sealing member attached to the support and has an engagement portion spaced from the seat when the float is in the first position and engaging the seat when the float is in the second position.