You cannot breathe directly out of a scuba tank because of the high pressure. A regulator reduces pressure to safe a level that can be inhaled by the diver. A diving regulator has two parts: the First Stage reduces the tank pressure and connects it to the Second Stage which contains the mouthpiece for breathing
The ZX DS-V regulator outperforms many regulators with outstanding reputations- why? Among many reasons, two stand out It has an internal structure that allows direct airflow through the 1st stage, providing outstanding performance. Zeagles conical precision high-pressure valve provides much greater reliability and service life compared to conventional designs, while improving responsiveness and performance at all breathing rates.
High Performance Porting
Dry Environmental Seal with Hydro Transmitter
ZX SECOND STAGE FEATURES Downstream valve, Balanced Diaphragm