A valve for a lid of a fluid vessel includes a valve body having an adapter portion coupling first and second opposite ends of the valve body. The first and second ends are rotatably fixed to each other and have an angle formed therebetween. The adapter portion is configured to be rotatably coupled to the lid about a first axis. The first end of the valve body is configured to be coupled to a button for rotating the first end about the first axis. The valve includes a stopper coupled to the second end of the valve body and configured to cover an opening in the lid. The stopper is configured to be separated from the opening when the first end of the valve body is rotated in a first direction about the first axis.