For the military diver whose mission depends on it, the technical diver for whom a free flow could be catastrophic, or the recreational diver who wants to be at peace knowing they can soak in the serenity of the reef, the Xstream regulator should be your next and last regulator.
During the NEDU McMurdo Antarctic Navy testing program, the Poseidon Xstream was the only regulator that suffered no free flows in the frigid below-freezing Antarctic waters. Thanks to its durability, reliability, high performance and excellent breathability in any environment, the Xstream is the regulator of choice for the US Navy, US Coast Guard, NYPD and anyone who prioritizes a safe, successful and serene dive.
Key Performance Features:
- Side purge prevents unwanted free flow
- Side exhaust keeps your vision clear of bubbles
- Ambidextrous (easy to share and breathe off)
- EAN 40 ready and compatible
- Self-balancing, delivers gas flawlessly in any conditions with no adjustment
- Approved for use under ice down to 29 degrees Fahrenheit (-1.6 degrees Celsius)
- Octo built to same standard as primary
- SPG is compact and robust with black face and fluorescent numerals in both BAR and PSI
Technical Features:
- Use with Air, Nitrox, Trimix and Heliox
- 5 LP and 2 HP ports
- Low work of breathing – servo assisted
- XSTREAM IS THE only regulator certified for 200 m
- Upstream 2nd stage valve (more resistant to free flow and wear and tear
- Over Pressure Valve, OPV (ensures that in case of regulator overpressure the regulator will not be stuck closed)
-
Thermo Dynamic Antifreeze (no environmental seals or extra fluids)
Xstream 1st Stage:
In extreme (pun intended) environments, you would be hard pressed to find a better regulator to trust your life with. Just ask the US Navy; in their Antarctic testing this is the ONLY regulator that suffered absolutely no failures. With reliability checked off, what comes next? How about performance? The Xstream 1st stage is self-balancing due to its ruby ball technology, which makes it a dream to breathe from.  How about versatility?  You can pair this 1st stage with an Xstream, Jetstream or Cyklon 2nd stage as well as with the Poseidon Atmosphere full-face mask. With a flow rate of nearly 2200 liters per minute, this regulator can deliver more air than most on the market. If the US Navy describes it as "flawless" in the Antarctic, imagine how well it will perform as you are gliding over the reef.
Xstream Octo:
In an out of air situation, would you rather your buddy pass you some cheap, barely functional alternate air source, or the world's most reliable regulator? Gone are the days of using some hardly adequate Octopus as your last chance lifeline to the surface. Poseidon believes that your Octopus should be as powerful and reliable as your primary. For that reason, the second stage Poseidon calls their Octopus is the exact same second stage that is used as the Xstream primary regulator. The only difference is the color of the exhaust cover.
Pressure Gauge Cirrus, Black:
Whether you are diving with a transmitter or analog gauge, you want a pressure gauge that is easy to read and simple to store out of the way. This 4350-PSI (300 BAR) SPG from Poseidon offers both. It is compact, robust and has a stylish black, fluorescent display that can be easily read at any depth or environment. Showing both BAR and PSI, it makes your air pressure easily visible wherever you are diving.
Upstream 2nd Stage:
You were most likely taught in you open water class that a downstream 2nd stage regulator is preferable. The reason being is that (in theory) if your regulator suffered a failure in the 1st stage it would stick open, resulting in a free flow. You would then be able to get to the surface while "sipping" on your free flowing regulator. But what if you need that precious air to get you out of the cave or wreck, or to clear your deco obligation? At the recreational level, how many divers realistically have the level-headedness to suffer a free flow at 100 feet and casually make their way to the surface while their tank drains?
The Xstream 2nd stage is an upstream regulator. You may have learned that if upstream regulators fail, they will fail "closed" and cut you off from your air. In theory this is true, but Poseidon has added a safety valve (OPV) onto their first stage. This valve ensures that pressure inside the regulator will stay at a point in which you can breath normally in the event of a failure. To sum it all up, in the unlikely event that your regulator fails, it will not free flow; it will continue to breathe normally while you make your way to the surface and save your precious gas supply along the way.