A prosthesis and a method for controlling flow through a bodily lumen in a first direction and a second direction are provided. The prosthesis includes a body having a proximal portion, a distal portion and a body lumen extending therethrough. The prosthesis also includes a first valve for controlling flow through the body lumen in a first direction where the first valve forms a first opening in the prosthesis. The prosthesis includes a second valve for controlling flow through the body lumen in a second direction where the second valve includes a portion that contacts the body in a closed configuration and the portion is spaced apart from the body in an open configuration to form the second opening. The first opening is positioned apart from the second opening and the second opening opens in response to a higher pressure than the first opening.
