A checkout device to test an anesthesia machine may include a connecting tube to connect the checkout device to the anesthesia machine to transmit fluid, and a valve positioned in the connecting tube having a first position at a second position. The first position may allow the fluid to flow without substantial resistance and the second position may prevent the fluid from flowing until a predetermined resistance level has been overcome. The valve may include an arm to open which corresponds to the first position and to close which corresponds to the second position, and the valve may include a movable piston to open and close the valve. The movable piston may be connected to a biasing apparatus to move the movable piston to open and close the valve, and the movable piston may be connected to the arm.
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