Regulator Second Stage Free Flow, Rapid Shut Off Valve. Designed to isolate a Regulator 2d Stage in the advent of a free flow that could potentially result in a rapid and total loss of a divers air supply.

Will fit the vast majority of regulator second stages.

Operates via a sliding action of the valve sleeve that results in a rapid shut of the air supply to the free flowing regulator second stage. Can be used on main second stage and octopus second stage.

Standard 9/16ths UNF Fitting so will fit 99% of Regulators.

Simply screw one end of the valve into the end of the regulator hose and the other into the second stage where the hose would usually connect.