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- Air-balanced valve technology. The air-balanced
valve technology of SCUBAPRO’s 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.
The air-balanced valve technology is featured in the X and S-Series
second stages. For best results they should be combined with balanced
first stages, like the MK25 or MK17.
- Diver adjustable inhalation effort. This
feature enables the diver to adjust breathing effort via an oversized
control knob; it is available on the X650, S600, and G250 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 Authorized SCUBAPRO Dealer on request.
- Venturi Initiated Vacuum Assist (VIVA).
Another SCUBAPRO patented feature, the 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, since
it is a second stage 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 to prevent free flow on the
surface, for training, for buddy breathing, in currents, or when used
as an octopus.
- 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.
| Air balanced valve technology: |
Yes |
| Classic downstream valve: |
No |
| Precision molded carbon fiber and technopolymer housing : |
Yes |
| Titanium components: |
No |
| Nitrox compatible up to 100% oxygen concentration: |
Yes |
| Divers adjustable inhalation effort: |
Yes |
| Divers adjustable VIVA (Venturi Initiated Vacuum Assist): |
Yes |
| Pre-tuned system: |
No |
| Sturdy super-flow hose with kevlar lining for extra durability and flawless air delivery: |
Yes |
| High comfort orthodontic mouth piece: |
Yes |
| Super high flow: |
No |
| High flow: |
Yes |
| Left and right attachment for extra convenience: |
No |
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