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Mares Vortex Assisted Design System (VAD)

All Mares Regulators offer the unique, patented, VAD system (Vortex Assisted Design).

This unrivalled system eases breathing at all depths. The working principal is very simple. As air comes from the hose, it passes into the second stage and is conveyed directly to the mouthpiece through the by-pass tube. A "vortex" is created in the airflow as it enters the mouthpiece. In the centre of this swirling air is an area of a low-pressure.

This low pressure helps keep the second stage diaphragm down during inhalation, thus increasing the regulator's sensitivity and minimising respiratory effort. Regulators with the VAD system, offer improved performance and allow for very natural and comfortable breathing.

One of the main causes of ice forming in regulators is the expansion of air inside the second stage case, which causes an abrupt drop in temperature. With the VAD system, air expands inside the by-pass tube and mouthpiece, reducing the likelihood of icing.