POSEIDON Xstream Deco, User Manual

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XSTREAM USER MANUAL
exhalation. A minimal number of moving
parts, coupled with thermodynamic
engineering, ensures the safe use in an
extremely cold environment.
XSTREAM 1:ST STAGE
In case of a malfunction in the 1st stage
causing excessive intermediate pressure,
the safety valve integrated in the 1st stage
will bleed off the excessive gas. This
system both indicates to you that
something is wrong so that you can take
action, and because of the up-stream
servo-valve technique, allows the
regulator to continue to breath normally.
(conventional downstream regulators are
likely to free-flow in such a situation).
The first stage is a balanced rolling
diaphragm ball valve producing extreme
leak tightness. Conventional designs are
sensitive to wear, misalignment, and
manufacturing precision. A ball always
finds its correct place.
Combined with the 2nd stage, the
enormous capacity of the 1st stage make
the regulator meet the EN 250 breathing
performance requirements even at as low
as 16 bar (232 psi) cylinder pressure. This
means that you gain an extra 34 bar (493
psi) of gas compared to most other regulators!
The Xstream construction requires less
o-rings than any other regulator. Except
for sealing the blind screws (3-4), there is
just 1 sealing o-ring (semi-static) in the
bottommounted versions and 2 in the side
mounted.
The hose routing is developed to be
optimised for a redundant system, using
two regulators. The HP ports are
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