The low pressure hose is of the standard type (length mm 760 - thread 3/8”). BEFORE EACH DIVE Your regulator should always be protectedwhile carrying it. Avoid heavy contact with your weight belt or other sharp or heavy objects. To correctly connect the regulator to the tank valve we recommend the following procedure:- Check the O-Ring on the tank valve as itmust be in good condition. It is advisable to always have a spare O-Ring available for replacement purposes in the event of the fitted O-Ring showing any signs of wear I/e cuts, abrasions or porosity.- Open the tank valve in order to removeany foreign matter from the nozzle.- Remove the dust cap from the yoke andcheck the filter of your regulator.- Place the 1st stage on the valve and firmlytighten the yoke screw, ensuring that the posi- tioning of the first stage allows the correct ali- gnment of the second stage, octopus and other WARNING It is advisable to rotate the external knob to the "pre-dive"position when the regulator is not in use or during your pre-dive inter- vals at the water surface, and to rotate the knob to the "dive"position before you com- mence your breathing activity and descend. which is highly resistant to impacts, abrasions,ultraviolet rays and chemical agents. Incorporating silicone membranes and valve seat with internal component parts in chrome plated brass and stainless steel. The mouth- piece is manufactured from medical grade sili- cone rubber. The second stage is a "downstream" type valve with an air flow channel exploiting a "Venturi effect". The result is an air flow delivery which is perfectly controlled by the diver's breathing action. Note: a normal breathing action produ- ces a light air flow while a higher breathing action, (due to heavy work or deep diving), produces a high air flow which is supported by the Venturi effect. This system allows for low consumption of air by reducing air waste as it is designed to per- fectly fit the divers air demand. The "downstream" valve also provides maxi- mum safety as it is also able to work in case of 1st stage overpressure, by releasing the exces- sive pressure, and allowing the diver to breathe. The low pressure hose is of the standard type (length mm 1000 - thread 3/8”).SORIUS ADJ REGULATOR - 2nd STAGEThe main body is made from synthetic resinwhich is highly resistant to impacts, abrasions, ultraviolet rays and chemical agents. Incorporating silicone membranes and valve seat with internal component parts in chrome plated brass and stainless steel. The mouth- piece is manufactured from medical grade sili- cone rubber. The second stage is a "downstream" type valve with an air flow channel exploiting a "Venturi effect". The result is an air flow delivery which is perfectly controlled by the diver's breathing action. Note: a normal breathing action produ- ces a light air flow while a higher breathing action, (due to heavy work or deep diving), produces a high air flow which is supported by the Venturi effect. This system allows for low consumption of air by reducing air waste as it is designed to per- fectly fit the divers air demand. The "downstream" valve also provides maxi-mum safety as it is also able to work in case of 1st stage overpressure, by releasing the exces- sive pressure, and allowing the diver to breathe. By rotation of the external "pre dive" control knob it is possible to adjust the "Venturi effect" and therefore the air flow. A complete clockwise rotation causes a higher breathing effort (position "pre-dive"); a complete coun- terclockwise rotation correspond to a lower breathing (position "dive"). It is recommended to rotate the external knob to the "pre-dive" position to reduce the risk of uncontrolled air discharge when the regulator is in pressure but not in use.

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