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` 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 BÃƒÂ¼hlmann 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.