Regulator
  

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

Hollis Scuba Reg 500 SE DC7 Max Flex Regulator & Hollis TX1 Dive Computer Combo

 

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Hollis` two newest technologies combined in one pacakge. The new 500SE utilizes a servo controlled valve to provide precision airflow and unparalleled performance for both air and trimix divers in a side exhaust configuration. To achieve this, we have perfected the original "lever-servo valve" we designed 35 years ago. Overbalanced diaphragm first stage also provides ideal hose routing for both backmount and sidemount users and optimum performance regardless of depth. TX1 is a mixed gas dive computer capable of open circuit air/nitrox/trimix and wireless HP monitoring. The TX1 utilizes a Bühlmann ZHL-16C algorithm with user adjustable gradient factors, allowing the diver to uniquely control their decompression calculations. With up to 6 gases and 6 independent transmitters (transmitter not included), there are unlimited options for the use of this gauge for both recreational and technical diving.

500SE Second Stage
Pneumatically balanced servo valve system
Left or right positioning - no upside down
DC7 First Stage
TX1 6 Gas Trimix Dive Computer

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