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The balanced piston ensures a minimum cracking pressure and a minimum pressure drop across the entire breathing cycle. It has four standard low pressure outlets plus one "straight through" high flow port designed to be used with an optional big bore low pressure hose. Two high pressure ports are standard as well.

The Second Stage Nonadjustable is the same design as the adjustable but without the Dial-a-Breath® adjustment feature. It makes an excellent octopus back up regulator.