- The regulator of choice for demanding divers using air or trimix – O2 Certified.
- 5 LP and 2 HP-ports
- Low WOB - Servo assisted
- Certified to 200 meters
- 2nd stage could be used either from left or right
- Approved to cold water standard
- Approved for use under ice down to –1,6C without CWD kit
- Upstream 2nd stage valve
- FULL MANUFACTURER’S WARRANTY
More About This Product
Which are the most important
differences between the Xstream
and other regulators?
We identified life critical parameters that
other 1st stages do not fulfill today.
High pressure seat leaks are the most
bothering problem. This can be very
serious if it occurs on a stage cylinder
as an example.
The Xstream design in itself is very
simple, that is why it has such extra
ordinary performance and few failure
points. A comparison between
regulator X and the Xstream regulator
show a failure point rate of 15 vs 5*.
One of the secrets is the patented high
pressure spherical ball seat.
Another important feature is the service
ability under water. If you get dirt in the
exhalation membrane it can easily be
fixed, you can actually throw up with the
regulator in your mouth.
Does Poseidon sell lower quality
2nd stage octopuses like other
A Poseidon octopus is always identical
to its primary regulator. There are no
differences in manufacturing procedures
or quality control.
Why are there no screws for
adjustments on a Poseidon
All our regulators are made without
compromises, they are all factory preset
for optimum performance. Within our
philosophy the screws, deflectors and
“venturi” effects marketed as features by
our competitors are fixes for bad design
and result in potential failure points.
What about Buddy Breathing
and sharing air?
Parallel breathing can be a severe
problem since the pressure drop having
two people breathing from the same 1st
stage can cause a regulator free flow or
freeze, based on the huge gas expansion
in the 1st stage.
Poseidon regulators are designed to cope with such standardised proce-
dures including parallel breathing either
with the hose from the right or left, this
makes air sharing easy.
Why does Poseidon design
regulators with side purge buttons?
Because side directed inhalation
membranes won’t cause a free flow in a
counter current or when riding a scooter.
It also gives the diver a freedom to select
if the hose comes from the left or right
without serious performance limitations.
Cold water diving,
what can happen?
A regulator not designed for cold water
use may “freeze” due to normal cooling
from gas expansion combined with chilly
water, causing a free flow.
Poseidon regulators are tested for these
conditions and some of our regulators are
capable of functioning down to -1,6°C
water temperature. Poseidon has solved
this by its internal TDA (Thermo Dynamic
The US navy has in several
studies placed the Poseidon
regulators on top of the
competition. Other Navy
approved regulators need
membranes and fillings
with silicone oil, this is
simply the wrong approach
and it adds failure points.
Poseidon Xstream is
currently the only
approved regulator for
cold water diving.
NASA uses the Poseidon
regulators and harnesses
at the Lyndon B Johnson
space center in Houston for space pre mission
training at the “Neutral
Bouyancy Lab” NBL. Poseidon
has further established a
protocol for oxygen cleaning
that NASA has adopted for
their nitrox regulators.