The SBV-1 allows a diver to easily breathe air directly into the Oral/Nasal Cavity of a full-face mask without the risk of CO2 buildup, mask fogging or needing to force exhalation to overcome the resriction of second stage exhaust valve.

The SBV-1 design allows divers to stand fully operational on the surface without reducing their gas supply.

The SBV-1 is available for most full-face masks. The low profile of the SBV-1 reduces the chance of an entanglement.