The CYKLON 5000 first stage uses a diaphragm actuated balanced upstream valve that is mounted at 90o to the air inlet so that the air flows by the valve in a path of least resistance.The valve plug has a hard stainless steel cone face allowing the valve to self-align and seal on a hard plastic seat even in extreme cold.When cylinder pressure changes, the forces across the valve plug remain in balance by a channel though the plug allowing air to pass and maintain intermediate pressure on both ends. 

The CYKLON 5000 second stage uses a diaphragm-lever actuated downstream valve.The diaphragm is mounted 90 to the movement of the valve which allows a large lever to facilitate lifting of the valve poppet off the inlet orifice.A ball swivel connection of the poppet head allows an elastomeric seat to self-align and seal on the orifice even in extreme cold.The poppet housing is metal and provides a good heat sink for cold water diving.The second stage housing can also be obtained in metal providing an even larger heat sink for cold water diving. The exhaust is at the side which allows the second stage to be used from either the left or right side of the diver. 
 
 

The JETSTREAM first stage uses a diaphragm actuated balanced upstream valve that is mounted at 90o to the air inlet so that the air flows by the valve in a path of least resistance.The valve plug has a hard stainless steel cone face allowing the valve to self-align and seal on a hard plastic seat even in extreme cold.When cylinder pressure changes, the forces across the valve plug remain in balance by a channel though the plug allowing air to pass and maintain intermediate pressure on both ends. 

The JETSTREAM second stage uses a diaphragm pilot actuated upstream valve.On inhalation,the diaphragm moves inwards and actuates a small pilot valve allowing air pressure to drop inside an elastomeric cone which causes the cone to collapse and allow the flow of air through many small openings in the metal housing enclosing the cone.On exhalation, the diaphragm moves back out and the pilot valve closes so pressure builds up inside the elastomeric cone forcing it against the openings in the housing enclosing the cone so that the flow of air stops. The valve design provides much less restriction allowing much more flow than conventional second stages. The exhaust is at the side which allows the second stage to be used from either the left or right side of the diver. 
 
 

The XSTREAM first stage uses a diaphragm actuated balanced upstream valve with a plug that is a free floating ball bearing that is not restricted by balance chamber o-ring seals of conventional plugs and can easily self-align and seal on a hard plastic seat even in extreme cold.When cylinder pressure changes, the valve seat orifice moves changing spring forces to keep balance with air pressure forces. 

The XSTREAM second stage uses a diaphragm pilot actuated upstream valve.On inhalation,the diaphragm moves inwards and actuates a small pilot valve allowing air pressure to drop inside an elastomeric cone which causes the cone to collapse and allow the flow of air through many small openings in the metal housing enclosing the cone.On exhalation, the diaphragm moves back out and the pilot valve closes so pressure builds up inside the elastomeric cone forcing it against the openings in the housing enclosing the cone so that the flow of air stops. The valve design provides much less restriction allowing much more flow than conventional second stages. The space inside the second stage is very small which reduces the level of residual carbon dioxide. The exhaust is at the side which allows the second stage to be used from either the left or right side of the diver.