The most technically advanced and reliable automatic dump valve available on the market. Correctly adjusted, the valve gives effortless yet controlled hands free ascent as expanding air automatically vents from the suit. The valve is equipped with a manual over-ride system, allowing you to vent the suit completely without disturbing your personal buoyancy setting.  This valve has the lowest profile with optimum dump rate. It has an improved ratchet feel and is ergonomically designed for ease of use.