:: XSTREAM
USER MANUAL :: ENGLISH
Poseidon XSTREAM for XSTREAM use
Welcome, new Poseidon divers. Here at POSEIDON we are very pleased that you have chosen one of the world’s foremost
diving regulators.
POSEIDON has been developing regulators for divers since 1958.
Professional divers, military divers, and techdivers choose POSEIDON equipment because of the high
demands they place on our products - the same demands you have!
Your new regulator has been designed to provide you with a life time of pleasure as a POSEIDON diver.
Our objective is that the equipment you are wearing should not be noticeable, instead it should be at one with the experience and give
you total freedom to achieve what every diver dreams about, the ultimate dive. To be at one with the water. To have full control and at
the same time feel the weightlessness when, meter by meter you descent into a world of your own.
Nothing shall disturb your concentration. No wheels or levers that need adjusting. No regulators that resist your breathing when you have
reached your target depth. No suits that limit your freedom of movement or get damaged at the slightest encounter.
This vision has accompanied Poseidon since the legendary diving enthusiast and engineer, Ingvar Elfström started the company in the
late 50’s. The same ideas motivate us now.
The name Poseidon represents constant development and improvement of diving equipment where everything is positioned correctly
and everything functions, even in the most extreme situations.
Products developed in cold Scandinavian waters that are among the toughest you can dive in. If they work here, they will work any
where. Poseidon’s devoted followers are convincing proof of that. Thank you for your confidence.
Yours faithfully
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APPROVALS/CERTIFICATIONS
The Xstream regulator series is approved
according to the EU Directive for Personal
Protective Equipment, 89/686/EEC and
meets or exceeds the applicable (see Technical Data for full detail) requirements of :
EN 250:2000 for cold water diving
USER MANUAL :: ENGLISH
INTRODUCTION
NORSOK U-101 for diving in excess of 50m depth (exclu
ding requirements for CO2 content and temperature of
inspired gas)
EN 738-1 for oxygen pressure shocks
Type approvement certificate no 020341, 020342 and
020343 is issued by SGS United Kingdom Ltd., Unit 202b
Worle Parkway Weston-super-mare, BS22 6WA United
Kingdom. Notified body number 0120
Production quality assessment according to article 11 B of
89/686/EEC is assessed by SGS United Kingdom Ltd., Unit
202b Worle Parkway Weston-super-mare, BS22 6WA Uni
ted Kingdom.
Independent performance testing according to directive
and standards is conducted at accredited laboratories Di
ving and Naval Medicine Centre, Swedish Armed Forces,
and Det Norske Veritas, Norway.
Poseidon Industri AB is certified according to ISO 9001
:: 3XSTREAM
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DEFINITIONS/ABBREVATIONS
Oxygen: any gas mixture containing greater than 21% oxygen up to 99.95% oxygen.
Trimix: a gaseous mix containing Oxygen, Nitrogen and
Helium.
:: 4 XSTREAM
EAN 50: any gas mixture containing greater than 21% oxy
gen up to 50%. Enriched Air Nitrox.
IP: Interstage pressure; the pressure existing between the
1st stage and the 2nd stage valve.
HP: High pressure; the pressure inside the SCUBA cylinders,
normally ranging between 300 bar (4351 psi) to 10 bar (145
psi)
Scfm: standard cubic feet per minute.
l/min STPD: standard temperature and pressure dry gas.
T.D.A: Thermo Dynamic Anti-Freeze
USER MANUAL :: ENGLISH
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INTRODUCTION
GENERAL SAFETY REGULATIONS
Although the regulator is functional with
pure oxygen and has excellent breathing
characteristics down to 200m (656 ft), the
usage is restricted by human limitations, or,
by limitations set out by the dive training
organisation, whichever is lower.
USER MANUAL :: ENGLISH
F U N C T I O N
Poseidon only warrants the regulator performance as spe
cified herein, and cannot be held responsible for improper
preparations, incorrect gas mixing and planning, or diving
beyond individual medical, psychological and physical limi
tations.
Limitations of use:
Xstream Deco, Oxygen and Duration models no higher oxygen content than 99,95% by volume
Xstream Deep models only for use with air or Trimix with a
maximum oxygen content of 21%, and a maximum Helium
content of 77%
Xstream Dive and octopus only for use with air and a maxi
mum depth of 50 meters.
Maximum depth never more than 200 meters (656 ft), but
normally limited by medical effects of the gas.
The oxygen partial pressure must normally not exceed 1.4
bar (20.3 psi), under the foreseeable maximum diving depth.
Only if established oxygen exposure tables are strictly adhe
red to, and a responsible organisation is planning dives with
increased exposures, elevated levels can be accepted for a
shorter period of time.
The oxygen partial pressure must never be lower than 0.2
bar (2.9 psi), under the foreseeable minimum diving depth.
:: 5XSTREAM
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The nitrogen partial pressure must not exceed 3.2 bar (46.4
psi), under the foreseeable maximum diving depth.
Inhaling cold gas and exhaling warmed gas, represents
energy losses of the human body (thermal imbalance, hy
pothermia). This effect increases with increasing depth and
can result in a sudden unconsciousness. Diving to extreme
depths this effect must be considered, calculated and plan
ned for and preventive actions must be taken, such as proper thermal protection and pre-heated gas
Xstream is for unlimited use in water temperatures from
water freezing temperature t
freezing temperature depends on salt content.
Diving with gas blends other than air, or deeper than 18 m
(59 ft), or in overhead environment, requires special train
ing regarding practices, equipment, physical and medical
understanding.
This manual assumes the reader has some basic knowledge
in those respects.
Diving is a strenuous physical activity. Its difficulty may be
increased by conditions such as cold water, poor visibility,
hard work, and increased depth. Always try to exercise pru
dent judgement when determining whether or not to dive.
Never dive when tired or in poor health.
Diving deeper than 50m (164 ft) using gasses other than
air is more demanding on the equipment. Most equipment
on the market is only approved for use within EN 250 limits.
Although Xstream Deep is certified to 200m (656 ft) depth
and Xstream Deco is for use with pure oxygen, you must al
ways make sure all of your equipment is suitable.
+1°C to +50°C (122°F). The
ice
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:: 6 XSTREAM
Do not use gas mixtures containing Helium for dry suit infla
tion. Helium has very low insulating properties, and contri
USER MANUAL :: ENGLISH
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F U N C T I O N
WARNING!
WARNING!
butes to a more rapid cooling of the body.
Preferably Argon shall be used, but must
never be inhaled. Insulating or actively heating of the body surface has very little effect
on the hypothermia described above.
Xstream Oxygen, Xstream Deco and Xstream Duration
must be used exclusively with Nitrox or Oxygen and should
be kept O2 clean at all times. If a Oxygen, Deco or
Duration regulator is contaminated or used with a
contaminated fill then the regulator must be O2 cleaned by
a certified Poseidon O2 technician.
The Xstream regulators are not designed to be breathed
up on by more then one person at a time. If you configure
your Xstream regulator for more then one diver to breath
from it at a time, the cold water performance may not meet
minimum safety standards.
USER MANUAL :: ENGLISH
F U N C T I O N
:: 7XSTREAM
OXYGEN SAFETY REGULATIONS
Oxygen alert and oxygen handling recommendations in this
manual applies to all parts and products intended for use
with greater than 21% oxygen by volume.
All accessories and other SCUBA equipment connected to
Xstream must be approved by the manufacturer for use with
the same oxygen content which is used with the Xstream.
Cylinder valves must always be opened carefully and slowly,
to avoid pressure shocks.
Oxygen can cause serious medical effects or even death
if used incorrectly. Use recognised tables for oxygen
exposure.
Xstream Oxygen EN 144-3/Deco/Deco EN 144-3 is approved
for oxygen service directly from the box, i.e. it is cleaned
to NASA Specification [1] Cleaning test Level 100 (particle
contamination) and NVR levels less than ASTM G63 Level C,
<50 mg/m2 (hydrocarbons).
Xstream Duration/Duration EN 144-3 is cleaned to the same
level as Xstream Deco Regulators and all other equipment
for oxygen service must be identified as such
:: 8 XSTREAM
Xstream Oxygen EN 144-3/Deco/Deco EN 144-3 and Dura
tion/Duration EN 144-3 must never be used with contaminated gas. Refere to Breathing gas section.
USER MANUAL :: ENGLISH
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F U N C T I O N
PRODUCT DESCRIPTIONS
The Xstream regulator models have been
developed based on experience gained from
deep diving, cave diving, wreck diving and
cold water diving.
The different types all share some common
requirements on safety through functiona
lity, simplicity and performance.
XSTREAM 2:ND STAGE
A number of features greatly improve safety and ease of
use:
If debris has degraded the function of the exhalation checkvalve, it can easily be reached and corrected by just twis
ting off the diffuser. It is the only part which needs to be
disassembled, and if it gets lost during the operation, the
regulator will continue to function but must only be used for
immediate ascent.
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 tech
nique, allows the regulator to continue to breath normally.
(conventional downstream regulators are likely to free-flow
in such a situation)
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USER MANUAL :: ENGLISH
F U N C T I O N
Integrated surgical hose fixing points safely secures the
regulator to the diver, but in an emergency allows a distres
sed buddy to retrieve the regulator without undue stress to
the diver.
The dead air space is low at just 49.5 ml (3 in
3
) making CO2
:: 9XSTREAM
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figures (hypercapnia) minimal. Inhalation resistance is incredibly low and unaffected by depth and breathing pattern
Because of the unique Poseidon valve technology, there is
no need for external adjustments.
Xstream 180° Model
:: 10 XSTREAM
Xstream 2nd stage
Xstream 90° Model
Patented
Xstream is fitted with the new ergonomic mouthpiece Posei
don AIR, with asymmetrical lugs for the most comfortable
bite.
All diaphragms are protected so that a strong current or
using a scooter or tug does not affect either inhalation or
exhalation.
A minimal number of moving parts, coupled with
thermodynamic engineering, ensures the safe use in an
extremely cold environment.
XSTREAM 1:ST STAGE
The first stage is a balanced rolling diaphragm ball valve
producing extreme leaktightness.
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 redun
dant system, using two regulators. The HP ports are positio
ned to accommodate the use of gas monitoring computers
e.g. first stage mounted HP sender/receive units.
USER MANUAL :: ENGLISH
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F U N C T I O N
Xstream 1st stage TDA
system (shown in green)
Xstream Deep90
(4691-BK)
Xstream Deep (4690-BK)
POSEIDON T.D.A
Xstream has a built-in Poseidon T.D.A,
ThermoDynamic Anti-freeze, which requires no maintenance. It is always there,
doing the job. It is thermodynamically protecting the parts which must not freeze.
It is identified by the large slots in the
cover, allowing the heat energy of the water to reach the spring. The cold from the inside is consequently insulated from the spring, via an insulation barrier
and insulating diaphragm. It is constructed without compromise to any detail to prevent cold reaching the sensitive
area. Using Poseidon T.D.A, a regulator can free-flow air in
fresh water of 0ºC (32ºF) for at least 10 minutes and afterwards still be completely unaffected
DEEP / DEEP90 1:ST STAGE (TRIMIX, AIR)
All materials in Xstream Deep are chosen and tested to be
optimised for Helium and high flow. This requires special
attention to leak tightness, since Helium gas has such a
low density.
All o-rings are of the highest Nitrile quality, and rated for
use down to -40ºC (-40ºF)
Deep 1st stage comes in two different versions. One side
mounted and one bottom mounted. Both versions are certified to 200m (656 ft) depth, and colour-coded black which
in most countries represents a bottom gas mix.
USER MANUAL :: ENGLISH
F U N C T I O N
Xstream Deep90
(001-47 / 0100-000)
WARNING!
The bottom mounted Deep was discontinued in 2005
Deep must never be used with an oxygen content > 21%,
or a helium content > 77%.
:: 11XSTREAM
Xstream Oxygen (0100-002)
Xstream Duration90
(4691-GN)
:: 12 XSTREAM
Xstream Duration
(4690-GN)
Xstream Deco (4960- WE)
Xstream Duration90
(001-87 / 0100-007 /
0100-001)
DECO / OXYGEN 1:ST STAGE (OXYGEN, EAN, AIR)
O4 stands for oxygen engineered, oxygen compatible, oxygen
clean and oxygen approved. Xstream Deco is O
viton configured air regulator, but in detail engineered for pure
oxygen.
The Xstream Deco is made as a bottom mounted version. The
connection stem is sealed with a pure copper washer sintered
onto the filter.
It has been tested for 360 bar (5221 psi) adiabatic compression
oxygen shocks of less than 20 ms (heated to 60°C/140°F) ac
cording to EN 738-1. To make the test even more severe than
required, it is tested with 99.95% purity of oxygen.
Directly from the box, it is cleaned to NASA Specification [1]
Cleaning test Level 100 (particle contamination) and NVR levels
less than ASTM G63 Level C, <50 mg/m2 (hydrocarbons).
The Xstream Oxy90 1st stage is only used on the Mk VI Discovery
Rebreather.
The Xstream Deco was discontinued in 2005.
. It is not just a
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DURATION/DURATION EN 144-3 1:ST STAGE (EAN, AIR)
Duration shares the performance and specifications from Deco,
but is identified by colour, and approved for use with gas mixes
up to 99,95% oxygen
If you prefer the 5 IP ports and such a configuration of your
equipment and you plan on useing mixtures greater than 50%
- Duration is the regulator for you.
The green colour coded Duration is offered for your safety at the
dive site and during the dive, avoiding the risk of mixing up re
gulators for different gasses
The side mounted Duration model is available in EN 144-3 configuration.
The bottom mounted Duration was discontinued in 2005.
USER MANUAL :: ENGLISH
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F U N C T I O N
Xstream Dive90 1st stage
DIVE90 1:ST STAGE (AIR)
Dive shares the performance and specifications
from the other Xstream 90 models. It is identified
by the chrome plated T.D.A. top and the number of
outlets: 5 low pressure and 2 highpressure.
Xstream Dive is delivered with a 70 cm hose, but
all hoses available for the Xstream regulator also
fits the Xstream regulator.
The Dive90 was discontinued 2005 and replaced with Deep90
XSTREAM LP HOSES
All Xstream hoses are made of high quality SBR/NR, and are available in different lengths. For deep dives or in particularly cold
conditions a long hose 2.15m (7 ft) has the benefit of warming the
gas by as much as 12°C (22°F) under certain conditions.
Using a long hose requires some basic knowledge in its use and
routing, to take the full advantages.
Poseidon does not recommend the use of hose protectors on Po
seidon IP hoses.
Hose protectors have been shown to mislead the user to neglect
the necessary pre-dive hose inspection. Therefore, Poseidon hoses are fitted with wear preventing end crimps, which in addition
can be inspected for the full engagement of the hose to the insert
at any time through the inspection hole.
On Xstream specific hoses (article no 4680-XXX) the hose end at
the 2nd stage includes the safety valve. As a visible indication of a
fault, the excessive gas will bleed to the ambient environment.
The hose is available in the following lengths as standard
2.15m (7ft.)
1.50m (4.9 ft)
0.90m (3 ft)
0.70m (2.3 ft)
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USER MANUAL :: ENGLISH
F U N C T I O N
:: 13XSTREAM
OXYGEN ALERT!
USAGE
MOUNTING THE HOSE
First time mounting the hose of the length you have chosen, start with unscrewing the blind-screw (5mm allen-key)
where you want the 2nd stage. Be careful not to contamine
either the open port or the hose end. Screw the hose in place
using a 13mm box spanner. Continue with attaching the 2nd
stage. Just screw the nut over the 2nd stage housing, and
secure it firmly by hand.
If you have a Oxy, Deco or Duration model, be absolutely
sure not to touch the o-ring or other inner connection areas
with your fingers, since fingerprints are a combustible contamination.
PRE DIVE
The procedure described below only describes the manner
in which the regulator is assembled, and does not replace all
of the various procedures you have learned in your diving
training program.
Xstream must always be used with minimum the following
SCUBA equipment :
- Compressed gas cylinder(s) conforming to natio-
nal regulations
- Frame or holding device for the cylinder(s) with
the possibility to mount the harness
- A safety system, including at least one of the follo
wing:
:: 14 XSTREAM
- A submersible pressure gauge
- A reserve valve
- An active low pressure warning device
1) Always check the gas-content of the cylinder before at
taching the regulator.
USER MANUAL :: ENGLISH
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HOW TO USE
2) Before attaching the regulator, carefully
open the cylinder valve, using gas flow to
clear the outlet, then close the valve. Never
direct the gasstream to bare skin or clothes
(porous materials)
OXYGEN ALERT!
OXYGEN ALERT!
3) Remove the protective cap on the first st
age. Check that the O-ring on the regulator’s
connection is intact and clean, then mount
the regulator on the cylinder valve. Turn the handwheel/
yoke-knob until you feel that the regulator is securely fast
ened.
Inspect the o-ring, and make sure it is absolutely free from
particles and/or grease. Do not touch the o-ring. Grease and
particles can cause a fire.
4) Slowly open the cylinder valve all the way, then turn the
knob back half turn. When the 2nd stage is pressurised and
the servo mechanism engages a maximum of 3 litres of gas
vents from the 2nd stage.
Slow opening of the cylinder valve is the best way to protect
the system from compression shocks. Rapid openings repre
sents the highest risk for fire due to compression shock. To
ensure a slow opening it is good practice to use both hands,
one on top of the other.
Always open the cylinder, and isolator valves if used, first
fully and then a 1⁄2 turn back. Partly opened valves in
creases the pressure drop over the valve and can reduce
the performance. On some brands, valves that are almost
closed can even shut off during a dive due to internal flexing
of materials.
5) Press a few times on the purge button on the second
stage so as to blow out possible debris.
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USER MANUAL :: ENGLISH
HOW TO USE
6) Check the pressure gauge to see that the tank is full,
:: 15XSTREAM
OXYGEN ALERT!
whilst purging, by watching the almost zero deflection of
the needle this indicates that the air is flowing correctly
with no restrictions.
7) Test breathe through the regulator and the octopus. If
the gas smells or tastes bad do not dive with it.
Tip! You can test the regulator’s correct setting by partly
immersing the 2nd stage in water, see picture. The servo
valve should crack open when the regulator is immersed in
between the two positions shown.
Tip! At dives where the water conditions are very cold
or there is an apparent risk for hypothermia, i.e. at
Trimix dives or water temperatures < 10ºC (50ºF), it is
recommended to use the surgical cord around the neck for
the regulator being used. The mouth region can become
numb from cold and you risk loosing the regulator.
DIVING
What is most distinctive about the Xstream is that it is easy
to use – there aren’t any valves or switches to change the
flow of gas, reducing breathing performance, etc. You can
leave the function and performance of the regulator in our
hands and concentrate on what you want to do - dive.
If on any occasion the gas tastes bad, especially the taste
of chlorine, always immediately switch to another safe gas
source. Bad taste can be a sign of an internal combustion,
and lethal gasses can be present.
:: 16 XSTREAM
WARNING!
If on any occasion the safety valve starts bleeding, there
is a 1st stage failure. Due to the construction, you can still
breathe normally from the regulator. To avoid excessive
use of gas, if possible switch to another gas source.
Ascend, never dive with a malfunctioning unit
USER MANUAL :: ENGLISH
HOW TO USE
AFTER DIVE
The regulator should always be rinsed while
it is still mounted on the tank.
The regulator should be under pressure, i.e.
mounted onto the cylinder, otherwise water can enter either the first or the second
stage and cause the build up of ice during
your next dive!
1) The regulator should be rinsed in fresh water after every
dive so as to avoid salt crystal formation around the func
tional parts.
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USER MANUAL :: ENGLISH
MAINTENANCE
OXYGEN ALERT!
WARNING!
OXYGEN ALERT!
2) After rinsing, close the cylinder valve and purge the re
gulator.
3) Unscrew the regulator from the tank. Check that the pro
tective cap is free from water and debris, then mount the
protective cap onto the connection.
The regulator should not be stored in direct sunlight and/or
at high temperatures. Make sure it is never subjected to
mechanical shocks or impacts.
Never unscrew a pressurised regulator from the tank. This
can create a jet of gas over the o-ring and cause a fire.
Never use the 1st stage housing to unscrew the regulator
from the tank. This can fully or partly unscrew the connec
tion stem from the housing, and create a future hazard. Al
ways use the handwheel.
Do not smoke in an area where oxygen is present. Never
lubricate the regulator and keep hands and tools clean and
absolutely free from grease.
:: 17XSTREAM
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OXYGEN ALERT!
WARNING!
WARNING!
ACCESSORIES
All accessories which may be ”wetted” by gas containing >
21% oxygen must be approved and maintained for oxygen
use.
Notice that EN 250 marked equipment must only be used
with air according to EN 12021. Violation can cause a fire
and/or the equipment may not function properly.
The use of accessories which have not been recommended,
can seriously impair the function of your equipment. Pres
sure-gauge hoses without a restriction in the connection
can, if the hose is punctured, allow a powerful jet of gas to
escape.
Xstream can be combined with the following equipment/
accessories, given that the manufacturers’ instructions for
use are strictly adhered to:
Xstream EN 144-3 rebuild kit
Xstream hoses
Xstream (neck strap) surgical cord
Poseidon Jetstream 2nd stage and hose, EN 250
Poseidon Jetstream 1st stage, EN 250
All CE marked or EN 250 designated cylinder valves
Yoke clamp
All CE marked approved pressure-gauge hoses
300 bar using UNF 7/16” connection.
All CE marked pressure gauges, diving computers, and HP
transmitters/senders rated for WP 300 bar (4351 psi)
All CE marked IP-hoses for BCD’s and dry-suits. Xstream
feeds 7.5-9.5 bar (109-138 psi) to BCD or dry-suit.
All CE and EN 250 marked mouthpieces
rated for WP
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:: 18 XSTREAM
USER MANUAL :: ENGLISH
ACCESSORIES
M I S C E L L A N E O U S
WARNING!
DIVING GAS
Water in the tank is the most common reason for regulator
freeze-ups. Inspect your tanks regularly and fill gas only
from sources guaranteed to be free from moisture.
USER MANUAL :: ENGLISH
M I S C E L L A N E O U S
WARNING!
WARNING!
Gas mixing requires special training and knowledge. Posei
don can not be held responsible for an incorrect gas mix.
Always follow established calculation methods and mixing
procedures for mixing a breathable gas. These are not des
cribed herein.
Xstream Deco, Xstream Oxygen and Xstream Duration must
not be used with air complying with EN12021 as this may
contaminate the apparatus.
Approved gas mixes for Xstream Deep:
Maximum level of:
Oxygen 21% by volume
Helium 77% by volume
CO 15 ppm
CO2 500 ppm
Water dew point -35ºC (-31°F)
Lubricants (droplets/mist) 0.5 mg / m
Water 25 mg / m
If air is used it shall be according to EN 12021.
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:: 19XSTREAM
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Approved gas mixes for Xstream Deco/Duration/
Duration90/Oxygen:
Maximum level of:
Oxygen 99.95% by volume
CO 2 ppm
CO2 500 ppm
Water dew point -45ºC (-50°F)
Lubricants (droplets/mist) 0.5mg/ m
Water 25 mg/ m
Gaseous hydrocarbons 15 ppm
Condensed hydrocarbons 0.1 mg/m
Solid particles 2 microns
Approved gas mixes for Dive:
Maximum level of:
Oxygen 21% by volume
CO 15 ppm
CO2 500 ppm
Water dew point -35ºC (-31°F)
Lubricants (droplets/mist) 0.5 mg / m
Water 25 mg / m
:: 20 XSTREAM
3
3
3
3
3
TECHNICAL DATA
Maximum Operational
depth
Typical Work of Brea
thing 50m on air, 62.5
l/min
Typical Work of brea
thing 200m on Trimix,
62.5 l/min
Approved gas Dive Air
Maximum working
pressure
Cold water performance
Approvals Type Approved acc. to EU Direc-
Applicable Performance Standards
Cleaned to hydrocarbon levels < 50mg/
m2 & particle level X
O-ring materials Dive Nitrile, EPDM
Certified to 200 m (656 ft)
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1.5 J/l (see diagrams below)
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1.7 J/l (see diagrams below)
Deep Air / Trimix
Duration Air / EAN 50 /
Deco Air / Oxygen
300 bar (4351 psi)
Exceeding EN 250 requirements for
cold water use
tive Personal Protective Equipment
89/686/EEC
EN 738-1, clause 6.6, 6.6.2
NORSOK U-101 clause 5.2-5.5, 5.9
EN 250:2000
Dive No
Deep No
Duration Yes
Deco / Oxygen Yes
Deep Nitrile, EPDM
Duration Viton, EPDM
Deco / Oxygen Viton, EPDM
Oxygen
USER MANUAL :: ENGLISH
M I S C E L L A N E O U S
Lubricants Poseidon 1; BAM appr. 270 bar @
Colour Dive Grey/Yellow
Warranty 24 months
2nd stage
Flow Rate >2150 l/min STPD (>76 scfm)
Inner Volume 49.5 ml (3 in3)
Weight I52 g (5.4 oz)
Technique Upstream servo-valve
Safety valve opening
pres.
Swivelling Around axis, can be used either side
Material ASA, Brass, TPU, Silicone, PU
Venturi assist Automatic
Inhalation control Automatic
Surgical cord Silicone
Dismountable w/o
tools
Anatomic Mouthpiece ”Poseidon AIR”
1st stage
Flowrate (l/min) >4000 l/min (>141 scfm)
Nominal inter-stage
pres.
Anti-Freeze protec
tion
Technique Rolling diaphragm
Valve technique Ball valve
USER MANUAL :: ENGLISH
M I S C E L L A N E O U S
100°C
Poseidon 2; BAM appr. 140 bar @
100°C
Poseidon R; silicone oil.
Deep / Deep90 Black
Duration Green
Deco / Oxygen White
18 +/- 1 bar (261 +/- 14 psi)
Yes
8.5 bar (123 psi)
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Built in T.D.A
Seat material Zytel
Test pressure 450 bar (6526 psi)
Ports
** Latest versions
Connection
*Only Duration90 manuf.
in 2004 or later.
Material Brass, plastics, stainless steel
Hose
Standard lengths
hose
Dive 5 IP (UNF
Deep
Duration
Deco
Deep 90
Dur. 90
Oxygen
Deep
Dive / Dive90
Duration/Duration90/Duration EN
144-3
Deco DIN 477, G5/8”
0.7 m (2.3 ft), 0.9 m (3 ft), 1.6 m (5.2
ft), 2.15 m (7 ft)
3/8”) /
2 HP (UNF
7/16”)
3 IP (UNF
3/8”) /
1 HP (UNF
7/16”)
5 IP (UNF 3/8”) /
2 HP (UNF
7/16”)**
DIN 477, G5/8”
–
Yoke adapter
available
DIN 477, G5/8”
/ EN 144-3,
M26x2*
:: 21XSTREAM
EXPLODED VIEWS
No over pressure valve built in to the 1st stage.
With over pressure valve built in to the 1st stage.
:: 22 XSTREAM
USER MANUAL :: ENGLISH
M I S C E L L A N E O U S
BREATHING PERFORMANCE
EN 250 stops here
The diagram above show a calculated graph for Work of
Breathing in Joules/litre at Q
The equation behind it, is extracted from hundreds of tests,
from which coefficients for gas dependency, average flow
dependency, and depth dependency is calculated.
Its maximum inaccuracy is within +/- 10%
The equation assumes the most dense gas possible to safely
breath is used, i.e. a maximum tolerable pO
depth. Adding more Helium will lower the figures.
It is important to understand that this equation does not
apply to any other regulator, since the coefficients and characteristics are strongly dependent on the regulator construction.
=62.5 litres/min.
average
, pN2 at any
2
Recommended limit
Min cylinder pressure
Absolute interstage pressure
Full regulator capacity is obtained as long as the cylinder
pressure is twice the absolute interstage pressure, given
the cylinder valve pressure drop is within EN 250 limits.
Taking into account the normal variations in interstage
pressure and adding a safety margin, the required minimum
cylinder pressure during diving is:
50 bar cylinder pressure from 0 msw to 100 msw
70 bar cylinder pressure from 101 msw to 200 msw
It is a good practise to always plan your dive according to
the “1/3-rule”, planning to use 2/3 of the cylinder capa
city.
-
USER MANUAL :: ENGLISH
:: 23XSTREAM
TROUBLESHOOTING
Effect Examine Reason Action
Safety valve is
opening
Immersed in
water, small
bubbles are
coming from
the mouthpiece
Is it spontaneously
opening
Do they
stop after
the regulator is
rinsed
Check the
cracking
pressure
(see section 6.2)
The bubbles remain,
cracking
pressure is
correct
If yes, it
may be a 1st
stage error
If yes, the
valve was
probably
jammed
with salt
crystals
If the cracking pressure
is too low,
the valve
is slightly
opened
The servo
valve is severely jammed by salt
crystals
Terminate
dive and have
the regulator
serviced
Make sure always to rinse
the regulator
after every
dive, using
fresh water
Have the
regulator correctly set by
an authorised
dealer
Have the
regulator
cleaned by an
authorised
dealer
The regulator free flows
breaking the
surface
Leakages at
extremely cold
conditions
There is a
sound from
the regulator
Gas vents from
2nd stage on
opening the
cylinder valve
Check the
cracking
pressure
(see section 6.2)
The sound
is occurring even
while
diving
Does it
stop within
1-2 se
conds?
If the crack
ing pressure
is too low, it
i n c r e a s e s
the risk for
free-flow
If the regulator hits
the surface
at a certain
attitude, it
can start a
free-flow
Incorrect orings
Incorrect
lubricants
have been
used
If yes, it is normal that max.
3 litres of air is used to en
-
gage the servo-mechanism
-
Have the regulator cor
rectly set by
an authorised
dealer
Either immerse slowly,
keep regulator
in your mouth,
or hold your
hand over the
free mouthpiece while
entering the
water
Have the regu
lator serviced
by an authorised dealer,
require o-ring
replacement
Have the regu
lator correctly
lubricated by
an authorised
dealer
-
-
-
-
:: 24 XSTREAM
If no, the cracking pressure
is too low, which increases
the risk for free-flow
USER MANUAL :: ENGLISH
M I S C E L L A N E O U S
OXYGEN STATEMENT
In diving operations, the use of oxygen is essential for the
human metabolism. In addition, oxygen concentration levels
greater than in air, can improve safety, especially but not
only, by lowering the risk for DCS and Nitrogen narcosis.
The Poseidon Xstream Deco/Oxygen is approved for use
with gaseous oxygen up to 99.95 % purity at maximum
300 bar supply pressure and a maximum gas temperature
of 60˚C. The Poseidon Xstream Duration90/Duration/Dura
tion EN 144-3 is also approved for use with gaseous oxygen
up to 99,95 % purity at maximum 300 bar supply pressure
and a maximum gas temperature of 60˚C
Using gaseous mixtures containing oxygen at high pressure
always presents a certain level of risk for equipment failure
due to combustion. Greater concentration oxygen, greater
pressure, greater temperature, respectively represents fac
tors that contributes to increase the mentioned risk.
Therefore, Poseidon has taken every precaution using “sta
te of the art” technology, expertise, industrial standards,
and knowledge to lower the risk as far as possible. Both
Xstream Deco / Oxygen and Xstream Duration are engi
neered for oxygen use, assembled and cleaned in a clean
room environment, made up by materials chosen to expose
lowest possible risk x failure-effect product, and are tested
and approved for oxygen use.
for the Xstream models. Regular maintenan
ce, servicing and cleaning is a prerequisite
for keeping the risk as low as possible.
Servicing and cleaning must be carried out
by an authorised oxygen service dealer. Po
seidon has developed and verified a servicing
and cleaning method, which guarantee acceptable levels of contaminations. Poseidon
can not be held responsible for the effects of
other un-verified cleaning and servicing methods.
Failure to adhere to these mandatory requirements trans
fers the responsibility to the owner.
Poseidon will continue to develop products and components
which further readuses the risks involved with oxygen use.
Releasing such products and components is not an admit
tance that previously released items must be recalled. It is
in everyone’s interest to always strive for lowering risks.
-
-
-
-
-
-
-
It is strictly prohibited to use the Poseidon Xstream Oxy
gen/Deco/Duration/Duration90 with oxygen (ref. “defini
tions”) without being fully trained and certified in the use
of oxygen by a recognised training agency. Failure to have
such training and certification could lead to death or serious
personal injury.
It is likewise absolutely essential that the end user strictly
follows the mandatory guidelines given in the users manual
USER MANUAL :: ENGLISH
M I S C E L L A N E O U S
-
-
:: 25XSTREAM
SERVICE CENTER
AUTHORIZED
ANNUAL SERVICE
It is extremely important for your safety that you keep your
equipment in good condition. You need not carry out any
other maintenance than described in previous section. The
regulator should be serviced annually and this must only be
carried out at one of POSEIDON´s authorised service loca
tions. Look for the POSEIDON Authorised Service Center
sign.
Because of the robustness and simplicity of the Xstream
construction, the amount of servicing is kept to a minimum.
Service should be done at regular intervals to ensure that
the regulator maintains its functionallity. It is recommended that you service your Xstream regulator at least once
every 24 months as a minimum but preferbly once every
12 months or as often as it is estimated to be necessary.
-
:: 26 XSTREAM
USER MANUAL :: ENGLISH
S E R V I C E
WARNING!
You can do some fault correcting servicing
and/or preventive servicing yourself. Follo
wing the instructions which comes with the
spare-part, you are allowed to:
Replace the diffuser
Replace the mouthpiece
Replace the hose
Modifications of the product are prohibited.
Modifications can impair the function of the regulator, and
transfers the responsibility to the person who does the modification. Adding decals and other outer means for oxygen/
Nitrox identification, as well as marking with a pen is not
regarded as modifications.
Do not lubricate the regulator beyond that done by Poseidon
or your authorised Poseidon dealer. Spraying lubricants into
the 2nd stage can cause deterioration of materials or be a
trap for dust particles
-
USER MANUAL :: ENGLISH
S E R V I C E
:: 27XSTREAM
”WE INTEND TO CONTINUE TO PRODUCE
DIVING EQUIPMENT AS LONG AS A SINGLE
DROP OF WATER REMAINS IN THE OCEANS
POSEIDON DIVING SYSTEMS
Box 8050 : S-421 08 Västra Frölunda : SWEDEN
t. +46 (0)31 7342900 : f. +46 (0)31 7342901
www.poseidon.se
”
Art. no 4695 ISSUE 081001-1
Art. no. 4695 ISSUE 040924-3
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