REGULATORS

REGULATORS
Diving is an exciting and fascinating activity that can be practiced by everyone, anywhere in the world. For that
reason, regulators need to adapt to an enormous range of different environmental conditions, individual
breathing behaviors and personal preferences. SCUBAPRO offers the optimal regulator breathing
systems for all of your specific diving needs.
SCUBAPRO regulator systems are comprised of either a piston or a diaphragm first stage and are
coupled with the most suitable second stage for optimal airflow and lowest breathing effort.
To help simplify your decision, SCUBAPRO recommends specific systems which best fulfill
the needs of different diving experiences and environments.
Discover our totally new for 2009 precision handcrafted all metal A700 second
stage, for maximum breathing performance, comfort and safety in any water
and any depths. Each regulator is designed and crafted to ensure you dive
with complete confidence every time you enter the water. And all of our
products exemplify our belief that Deep down, you want the best.
All SCUBAPRO regulators have a Limited Lifetime Warranty when
purchased from an Authorised SCUBAPRO dealer.
a700 SYSTEMS – precision crafted performance
A700 – AVAILABLE APRIL 2009
MK25/A700 SYSTEM
Like a precious diamond, the A700 is forever. And nothing
compares to this completely new jewel of a regulator from
SCUBAPRO. Its beauty will seduce you, its performance will amaze
you.
The MK25 teamed with our exceptional new A700, offers
superior ultra-high airflow system for maximum performance
in all temperatures and diving conditions.
The regulator is the diver’s most important piece of equipment. It
is a life support system that provides air in an airless environment.
Whatever your dive destination, the SCUBAPRO A700 lets you
breathe effortlessly and naturally underwater, letting you safely forget
you’re using a regulator.
Our exclusive piston MK25 and high-performing diaphragm MK17
have both been redesigned in polished chrome finish editions,
specifically for the A700, giving an exquisite look and feel to a
regulator built to last. Paired with either first stage, the A700 systems
are phenomenal in beauty and in breathing performance.
• Precision handcrafted full metal construction and design, using
modern technologies to craft an exceptional breathing regulator for
a lifetime of exceptional dive experiences.
• Unparalleled breathing performance at any depth, any temperature,
in any position. Work of breathing results are 0,49 J/I, an all time
best.
SCUBAPRO is synonymous with piston-controlled first stages. Our
MK25 underscores this heritage with an array of patented features
and ultra-stable intermediate pressure, for an extremely punctual and
consistent high delivery of air, ensuring unfailing performance.
The MK25 balanced piston first stage is our absolute top performer,
making this system our very best!
• Air balanced flow-through piston provides constant and effortless
air flow unaffected by changing tank pressure.
• Newly polished chrome edition, available uniquely with A700
system with 5 low pressure and 2 high pressure ports plus
swiveling turret for convenient arrangement and personalisation of
your gear.
• Anti-freeze protection for all diving temperatures and externally
adjustable intermediate pressure for easy maintenance.
• Available in either 232bar INT or 300bar DIN configuration.
• Full metal body and components assure the best thermal
exchange imaginable, dramatically lowering the risk of freezing in
cold water.
• Nobody does it better: innovative technology features as only
SCUBAPRO expertise and history in regulator engineering can
accomplish.
• Compact dimensions for light weight comfort.
• Air balanced valve technology decreases the inhalation resistance
to the lowest possible level resulting in super smooth breathing.
• Diver adjustable inhalation enables personalised breathing effort
control.
• Newly aligned VIVA system with micrometric adjustment knob for
more precise control and comfort.
• Super high flow exhaust valve allows air to exit more freely and
lowers the effort; also keeps bubbles away from face and eyes.
For full specifications refer to the technical annex on page 16.
MK25/A700
REGULATORS
MK17/A700 SYSTEM
Cold water divers or those frequenting harsh environments
will appreciate this perfectly matched pair.
The A700 is a complete complement to SCUBAPRO’s MK17, a
high-performing balanced diaphragm first stage engineered exactly
for such conditions. Full metal body and components guarantee less
risk of freezing and the MK17 is environmentally sealed so water
cannot enter the inner mechanism. Given that regulators generate
temperatures down to minus 30º due to the incredibly fast moving air
and the pressure drop involved, it is imperative that sensitive moving
metal parts avoid contact with extremely cold water.
• Balanced technology provides consistent performance at all
tank pressures, at any depth and optimizes the second stage
performance, for effortless breathing.
• Dry ambient pressure chamber provides better protection and
performance in cold water than any other diaphragm regulator.
• Balanced diaphragm design, with ultra-fast flow to the second
stage, prevents water entry, enhancing trouble-free operation, even
in the coldest or most polluted conditions.
• Finned cap with ribs acts as a radiator to increase the surface area
of heat transfer form the water to warm the internal parts.
• Available in either 232bar INT or 300bar DIN configuration.
MK17/A700
06 | 07
MK25 – THE ULTIMATE BALANCED FIRST STAGE AND SYSTEMS
MK25 FIRST STAGE
SCUBAPRO has been the leader in the evolution of piston-controlled
first stages. Our MK25 underscores this heritage with an array of
patented features and ultra stable intermediate pressure, for an
extremely punctual and consistent high delivery of air, ensuring
unfailing performance.
The balanced piston MK25 first stage is our absolute top performer
and teamed with our top-of-the-line air-balanced second stages
described below, we offer you superior ultra-high airflow systems for
maximum performance under all breathing conditions.
• Air balanced flow-through piston provides constant and effortless
air flow unaffected by changing tank pressure.
• Chrome-plated brass body with 5 low pressure and 2 high
pressure ports plus swiveling turret for convenient arrangement
and personalisation of your gear.
• Anti-freeze protection for all diving temperatures and externally
adjustable intermediate pressure for easy maintenance.
• Available with either 232bar INT or 300bar DIN configuration.
MK25/S600 SYSTEM
This is SCUBAPRO’s ultimate regulator combination. The S600
truly matches the MK25’s characteristics and adapts to all diving
conditions and diver preferences. Ease of breathing is the essence of
this system.
• Balanced flow valve provides constant and effortless air flow.
• Diver-adjustable inhalation control enables personalised
breathing effort.
• Diver-adjustable VIVA for powerful inhalation assistance and
prevention of free-flow.
• High-flow exhaust valve for reduced exhalation effort.
• Super-flow hose for smooth air delivery.
• Optional color covers available separately for unique
personalisation of your regulator.
For full specifications refer to the technical annex on page 16.
MK25/S600
REGULATORS
MK25/G250V SYSTEM
A classic. Our remarkable MK25 first stage paired with our
redesigned full metal G250V second stage, was inspired by the
highly acclaimed G250, introduced in 1986. This system brings
together the essence of SCUBAPRO regulators: unparalleled first
stage piston technology and unfailing second stage performance.
• Air balanced valve technology for effortless inhalation.
• High-flow exhaust valve for reduced exhalation effort.
• A full metal system for excellent cold water resistance: metal inlet
tube, stainless steel orifice, metal inhalation-resistance control
knob for diver adjustment inhalation, and metal hose connector/
heat exchanger. Serious construction for serious divers.
• Improved VIVA knob for easier adjustment of inhalation assistance
and free-flow prevention.
MK19
The MK19 has evolved from the very popular and widespread MK17
and was constructed for highest performance and versatility. The
balanced, diapragm controlled first stage features a swivel head and
all great charakteristics of the MK17, like the dry ambient pressure
chamber and the suitability for rough enviroments. The MK19 is a
perfect choice for technical divers with high demands
• Balanced, diaphragm controlled high performance first stage
MK25/G250V
MK19
• Dry ambient pressure chamber (dry chamber)
• Finned cap with ribs acts as a radiator
• 360° swivel head with 5 low pressure ports
• High pressure ports on opposite sides
• Externally adjustable intermediate pressure
• Available as DIN- und INT-Version
Available as MK19/G250V and MK19/S600
08 | 09
MK17 – THE DIAPHRAGMS AND THEIR SYSTEMS
MK17 FIRST STAGE
Our MK17, a high performance, balanced diaphragm first stage
regulator, has been engineered for harsh environments and for use
in ice cold water or polluted environments. Resistance to cold has
indeed been a key element in the engineering of the MK17.
• Balanced technology provides consistent performance at all
tank pressures at any depth and optimises the second stage
performance, thus allowing for effortless breathing.
• The dry ambient pressure chamber provides better protection
and performance in cold water than any other diaphragm regulator.
• The balanced diaphragm design, with ultra-fast flow to the second
stage, prevents entry of water into the first stage mechanism and
enhances a trouble free operation, even in the coldest or most
polluted conditions.
• Patented finned cap with ribs acts as a radiator to increase
the surface area of heat transfer from the water to warm the
internal parts.
MK17/S600 SYSTEM
Premium breathing performance in all conditions. Our ultimate
S600 second stage regulator paired with an all-rounder balanced
diaphragm MK17 for best breathing, even in harsh environments.
• Balanced flow valve provides constant and effortless air flow.
• Diver-adjustable inhalation control enables personalised breathing
effort.
• Diver-adjustable VIVA for powerful inhalation assistance and
prevention of free-flow.
• High-flow exhaust valve for reduced exhalation effort.
• Super-flow hose for smooth air delivery.
For full specifications refer to the technical annex on page 16.
MK17/S600
MK17/G250V
REGULATORS
MK17/G250V SYSTEM
DIVING IN COLD WATER WITH
SCUBAPRO
The perfect balance of power. Our diaphragm MK17 first stage
teamed with our G250V second stage. This exceptional second
stage features a 35% improvement in breathing performance when
compared to its popular predecessor: the G250HP. It’s a terrific cold
water combination.
As diving conditions are very different and diving also takes place in
extreme cold water and air temperatures, the danger of a freezing
regulator must always be considered. A reliable antifreeze protection
is extremely important for every diver. All SCUBAPRO regulators are
certified according to CE regulations until a working pressure of 300
bar. Some models have exceeded the strict demands of these tests
and have been tested under extremely cold conditions below 2 ° C.
• G250V is a full metal system, composed of a metal inlet tube,
stainless steel orifice, metal inhalation-resistance control knob, and
a metal hose connector/heat exchanger. Serious construction for
serious divers.
To improve the cold suitability, moreover, SCUBAPRO has
developed a new patented body cap for the MK17, MK19 and the
MK25 and thus created three optimum cold water stages. The
rips in the cylinder double the surface and provide therefore for
a quicker heat exchange. The water warms up the internal parts
which are cooled by the flow of the compressed air. Besides, with
the MK19 and the MK17 the isolated control chamber reduces the
ice formation susceptibility at extreme temperatures. This makes
both diaphragm controlled stages extremely suitable for cold water,
regardless in which depth. .
• Improved VIVA knob for easier Venturi adjustment.
• High-flow exhaust valve to reduce effort.
MK17/S555 SYSTEM
Confidence to go, anywhere. Our MK17/S555 regulator system
combines the air-balanced valve technology of our second stage
S555 with the sturdiness and excellent air flow of our top diaphragm
first stage. The ease of use and durability of the S555 make it an
ideal companion for the MK17, designed to perform in harsher
environments. Thanks to its lightweight, compact design, this is the
perfect system for dive enthusiasts who travel.
• S555’s balanced flow valve provides constant and effortless air
flow.
• Diver-adjustable VIVA for full breathing control in varying
MK17/S555
Most SCUBAPRO second stages are equipped with cold-resistant
and precision-made Carbonfiber housings and Technopolymer
components. With these materials even CE cold water norms are
exceeded. Besides, these components also affect positively the
weight and the corrosion resistance.
environments.
10 | 11
MK11 – THE DIAPHRAGMS AND THEIR SYSTEMS
MK11 FIRST STAGE
MK11/R395 SYSTEM
Our MK11 is the perfect choice for the recreational diver who wants
the advantage of a diaphragm first stage for use in temperate waters.
Diaphragm system prevents entry of water and pollutants. Balanced
technology allows prompt delivery of air at all tank pressures.
Compact and lightweight, the MK11 is the ideal travel companion.
This system is all about ease of use and reliability. The MK11/
R395 combines a balanced diaphragm first stage with a classic
downstream valve second stage in a lightweight package, making
it the perfect recreational combination. The R395 allows worry-free
air flow diving in all conditions. Compact, light and easy to carry, it
follows your diving passion anywhere.
MK11T/S555 SYSTEM –
LIMITED EDITION
• Classic downstream valve second stage is legendary for rugged,
An exclusive edition of the perfect travel regulator. The ‘T’ is for
Titanium, a unique metal alloy especially suited for the rigors of
diving and impervious to corrosion, yet at the same time very
lightweight. And the attributes of the MK 11T/S555 are not limited
to its luxurious look.
• Diver-adjustable VIVA for personalised comfort and optimum
reliable performance.
control in varying environments
• Diaphragm system prevents entry of water and pollutants
• Balanced technology allows prompt delivery of air at all
tank pressures.
• The S555’s balanced flow valve provides constant and effortless
air flow, is easy to use, and remarkably durable and reliable.
• Diver-adjustable VIVA for full breathing control in varying
environments.
MK11T/S555
For full specifications refer to the technical annex on page 16.
REGULATORS
MK11/R395
MK11/S555
12 | 13
WORKHORSE REGULATOR AND BACKUP SYSTEMS
MK2 PLUS
The MK2 was first introduced in 1962 and has been a solid
performer ever since. The current MK2 PLUS version remains as
popular as ever and its simple piston mechanism continues to be a
fantastic performer with minimal maintenance.
• Simple, classic downstream first stage piston mechanism for
trouble-free performance and minimum maintenance.
• 4 LP/1 HP-outlet
• Available as INT- and DIN-Version
MK2 PLUS/R295 System
The workhorse regulator system. A classic downstream piston
teamed with a classic downstream second stage means reliability,
durability and easy care. This is the system of choice for new divers
or occasional leisure divers. The R395 is one of the most dependable
second stages in the world, renowned for its simplicity and reliability
in temperate waters. The perfect recreational regulator.
SCUBAPRO DEDICATED
NITROX SYSTEMS
Nitrox (oxygen enriched air) is the term used to describe breathing
gases made of oxygen nitrogen mixes with the oxygen percentage
higher than 21% (air). SCUBAPRO offers two fully dedicated
Nitrox systems based on our piston first stages and developed
in compliance with the most stringent safety norms on breathing
apparatuses.
• SCUBAPRO MK25/S555 Nitrox is the choice for advanced and
passionate recreational divers who require the top performance of
a balanced piston first stage coupled with an air balanced second
stage.
• MK2 PLUS/R295 Nitrox system combines our classic downstream
piston with a classic downstream valve second stage for simplicity
and top reliability. Ideal for rental and diving centres.
Available as MK2 PLUS/R295 NITROX M26 and
MK25/S555 NITROX M26
For full specifications refer to the technical annex on page 16.
SCUBAPRO BACKUP SYSTEMS
R395 AND R295 OCTOPUS
• Classic downstream valve for reliable performance.
• Diver-adjustable VIVA on the R395 for optimum control in varying
environments or fixed VIVA on the R295 for ready-to-use simplicity.
• Hi-visibility yellow cover, 1 meter long yellow hose and hose
protector, for easy access and air sharing.
• Left or right hose attachments for personalised flexibility.
• Compact size and lightweight materials for comfort and reduced
drag during the dive.
AIR2
In 1979, SCUBAPRO created the AIR2 concept. It is now in its fourth
generation and is more streamlined, modern, ergonomic and lighter
than previous versions. Great for traveling divers. AIR2 provides
smooth reliable BC inflation at all tank pressures.
AIR2 is more than a simple inflator. Its components’ design takes
advantage from the best regulator technology to guarantee
maximum efficiency and reliability. Ergonomic shape makes it easyto-handle in any circumstance, it can be automatically emptied by
simply pressing the exhaust button.
• Single hose configuration to streamline diver.
• One-hand operation ensures efficient use.
• Self-flushing mechanism requires single push of purge to
clear away impurities.
MK2 PLUS/R295
REGULATORS
R395 OCTOPUS
All stages are available
with DIN
MK25/S555 NITROX
R295 OCTOPUS
MK2 PLUS/R295 NITROX
AIR 2
14 | 15
SCUBAPRO FIRST AND SECOND STAGE REGULATORS
SCUBAPRO FIRST STAGE
REGULATORS
The task of the first stage of a regulator system is quite simple:
reduce high pressure air coming from the tank to a consistent
intermediate pressure. First stage regulators are divided into piston
and diaphragm categories, depending on the mechanism used to
control the valve allowing air to flow to the second stage. Piston
first stages can be further classified between balanced and classic
downstream piston design, with specific function and performance of
the first stage related to pressure changes in the tank.
SCUBAPRO PISTON TECHNOLOGY
The general advantage of a piston first stage lies in its reliability
and reduced maintenance requirements, due to an effective but
simpler mechanism with less moving parts. More importantly, no
other design can reach the high air delivery rate of a balanced piston
controlled first stage.
Air-balanced flow-through piston - First stages with air-balanced
pistons deliver significantly more air to the second stage than any
other first stage, plus their performance is totally unaffected by
changing tank pressure. A balanced piston allows the use of lighter
and more sensitive components, resulting in ultra fast breathing
response, instant delivery of air on demand, and extra high air flow,
especially in low tank pressure ranges. The tired diver benefits from
a smoother breathing regulator during the ascent or deco stop.
Balanced piston first stages are the first choice of demanding sport
divers and professionals, and perform equally well in warm and cold
water environments. This technology is featured in our MK25 first
stages.
Classic downstream piston - The best example of bulletproof
reliability and trouble-free, minimum maintenance regulators. The
classic downstream piston configuration is the simplest mechanism
that exists to control the pressure drop from a tank to feed the
second stage. The classic downstream valve is the first choice of
diving centers and rental facilities worldwide for warm and moderate
water temperatures. This technology is featured in our MK2 PLUS
first stage.
SCUBAPRO DIAPHRAGM TECHNOLOGY
Diaphragm-based first stages are environmentally sealed so water
cannot enter the inner mechanism. Given that regulators generate
temperatures down to minus 30°C due to the incredibly fast moving
air and the pressure drop involved, it is imperative that sensitive
moving metal parts avoid contact with extremely cold water.
Therefore, diaphragm first stages have been the favored choice of
cold water divers and those working in contaminated or muddy water.
SCUBAPRO diaphragm first stages feature balanced technology and
are packed with patented features resulting in ultra-fast flow to the
second stage on demand plus fantastic overall performance. This
technology is featured in our MK17 and MK11 first stages.
SCUBAPRO SECOND STAGE
REGULATORS
The second stage of a regulator must translate natural breathing
behavior into mechanical reality. A high quality second stage can
significantly reduce stress and enhance diver safety by providing
smooth, low-effort breathing response, resulting in ample yet
controllable quantities of air. The designations balanced and classic
downstream are also distinguishing marks for second stages. They
deliver ultimate flow performance and stability in addition to reliability,
simplicity and solid performance. While all SCUBAPRO first and
second stages are fully compatible, some combinations will result in
more effective and higher performance systems.
AIR-BALANCED VALVE TECHNOLOGY
The air-balanced valve technology of SCUBAPRO second stages
features a balancing chamber in the second stage mechanism,
slightly offsetting the force of the downstream air entering from the
first stage. This allows reduced spring tension and decreases the
inhalation resistance to the lowest possible level. The result is super
smooth breathing in all conditions. Air-balanced valve technology is
featured in S-Series and G-Series second stages. For best results,
they should be teamed with balanced first stages like the MK25 or
MK17.
• A-Series regulators propose extraordinary performance for
distinguishing divers.
• S-Series regulators offer superb air flow characteristics and
exceptional performance, and are the preferred choice for
passionate divers.
• G-Series regulators are timeless classics, redesigned for today’s
diver yet forever famous for unfailing performance and ultimate
reliability, and favored by demanding divers.
CLASSIC DOWNSTREAM VALVE TECHNOLOGY
Classic downstream valves are particularly noted for their legendary
safety and reliability. When in use, the downstream valve opens in
the same direction as the incoming airflow. To close the valve and
stop the airflow, a spring counteracts the force of the incoming air.
Therefore, a slight inhalation effort is always required to overcome the
spring tension and open the valve. SCUBAPRO R-Series robust and
reliable R395 and R295 are examples of this design. They are best
teamed with the MK17, MK11 or MK2 PLUS first stages.
ADJUSTABLE SECOND STAGE REGULATORS
The human breathing process is unique and individual — rather
intuitive — and taken for granted at the surface. However, once
underwater and dependent on a regulator, we suddenly realize how
uniquely we breathe, and how important a regulator can be. The
harsher the diving conditions, the higher the flexibility and response
we demand from a second stage regulator. This is why SCUBAPRO
has implemented diver-adjustable functions on many of our second
stage regulators.
Diver-adjustable inhalation effort - This feature enables the diver
to adjust breathing effort via an oversized control knob. It is available
on the A700, S600 and G250V second stages. All other second
stages feature a pre-set inhalation effort that suits the most common
diving conditions and can be fine-tuned at an Authorised SCUBAPRO
Dealer on request.
Venturi-Initiated Vacuum Assist (VIVA) - Another SCUBAPRO
patented feature, VIVA is available on all SCUBAPRO second
stages. VIVA uses the power of a vacuum assist to reduce work of
breathing and increase breathing comfort. It is diver adjustable on
all current SCUBAPRO second stages except the R295, which is
intentionally designed for diver training courses, rental facilities, and
divers demanding ready-to-use equipment. A VIVA in MAX position
gives powerful breathing support on every single breath. A VIVA in
MIN position helps prevent free flow on the surface, ideal for training,
buddy breathing, in currents, or when used as an octopus.
REGULATORS
COMFORT, DESIGN AND
CONVENIENCE FEATURES
A regulator should be considered truly comfortable only when you
nearly forget you are using one. Characteristics such as natural and
low-effort breathing behaviour, minimum flow resistance, drag of the
second stage while swimming, freedom of movement and overall
low effort contribute to enhancing comfort. Below are some key
comfort features of SCUBAPRO regulators.
Orthodontic mouthpiece - SCUBAPRO uses a comfortable
orthodontic mouthpiece on every second stage to reduce jaw
fatigue and gum irritation. It was developed by dentists and dental
laboratories and lasts longer than any other mouthpiece, because
only a minimum effort is needed to hold it comfortably in place.
Twin opposing high pressure ports - The arrangement of high
and low pressure hoses is crucial to diving comfort. Two opposing
high pressure ports facilitate individual positioning of the first stage
(pointing up or down). This allows the diver to position the gauges
either on the right or left side and increases the freedom of movement
for head and neck. Featured on all first stages except the MK2 PLUS.
Multiple low pressure ports - For ultimate freedom in the
arrangement of low pressure hoses, the MK25 accommodates 5 HF
(high flow) ports on a swiveling turret, which allows for 360 degree
swivel of hoses. The MK17 and MK11 feature four stationary low
pressure ports, two of them HF. High flow ports deliver about 15%
more air than conventional ports.
DIN/INT first stage configurations - To ensure worldwide
compatibility, all SCUBAPRO regulator systems are available in a
232bar INT version as well as 300bar DIN versions.
Externally-adjustable intermediate pressure - Allows authorized
SCUBAPRO service technicians to quickly fine tune or make
adjustments after maintenance without the need to disassemble the
first stage. Featured on the MK25, MK17 and MK11 first stages.
Piston: Air-balanced flow-through
Diaphragm Systems
MK2
PLUS
MK25
Technology
MK17
MK11
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Balanced Diaphragm
Materials
MK19
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Piston: Classic downstream
Chrome plated brass body
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Full titanium body
Cold Water
Anti-freeze protection
Dry chamber
Ports
Configurations
Low Pressure (LP) Ports
5
4
5
4
4
High Pressure (HP) Ports
2
1
2
2
2
Swivelling turret with LP Ports
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INT 232bar
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DIN 300bar
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Externally adjustable intermediate pressure
SECOND STAGES
Technology
Materials
Breathing
comfort
Air-balanced
A700
S600
G250V
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R295
S600 G250V A700
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S600 G250V S555
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S555 R395
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Classic downstream valve
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Precision molded carbon fiber &
technopolymer housing
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Full metal barrel
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Diver’s adjustable inhalation effort
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Diver’s adjustable VIVA (Venturi
Initiated Vacuum Assist)
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High comfort orthodontic mouth piece
Super high flow
High flow
Left and right attachment for extra convenience
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Pre-tuned VIVA system
Sturdy super-flow hose with kevlar lining for extra
durability and flawless air delivery
Exhaust valve
SCUBAPRO UWATEC warrants to the original consumer purchaser that any product
carrying the Limited Lifetime Warranty — when purchased from an Authorized
SCUBAPRO UWATEC Dealer — will be free from defects in materials and workmanship,
under normal use, for the period of his or her lifetime, with reasonable maintenance.
Please see warranty literature accompanying products for specifics and conditions.
PIston Systems
FIRST STAGES
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16 | 17