MK17 Evo G260 Regulator
£310.00 RRP £435.00 In StockPlease note: This item cannot be shipped outside the European Union - learn more
The MK17 Evo G260 Regulator continues the legend of the G250 in a completely new, fully balanced second stage combined with the higher performance balanced MK17 Evo first stage.
The MK17 Evo is a balanced diaphragm first stage that is capable of delivering consistently high flow rates to the second stage via four low pressure and two high pressure ports in fixed positions on the main body of the first stage. The MK17 Evo uses a dry environmental seal to help protect the critical internal parts from extreme cold water and also protects sensitive soft parts like o-rings and the diaphragm from contaminants that could cause the parts to degrade. The first stage incorporates a large finned section around the dry chamber to help dissipate the cold generated as the cylinder pressure is reduced into the surrounding water much more efficiently.
The G260 is a completely new second stage based on the look and feel of the classic G250. The new housing is smaller and lighter for improved comfort and reduces drag. The new balanced valve increases the performance over the G250 and also features a high percentage of metal components to help with cold resistance as metal has a much better heat transfer rate than composite materials such as plastic. Inhalation adjustable and venturi controls can be found on the side of the housing to allow the diver to customise the performance as required.
The design of the of the G260 housing allows a qualified technician to reverse the handing of the second stage from right to left (and vice versa) making it ideal for twin sets, stages / deco rigs or anyone that prefers it handed on the opposite side.
G260 Second Stage:
- Metal components provide increased resistance to freezing when diving in extreme water conditions.
- Air-balanced valve smoothes out the inhalation effort when diving at varying depths and supply pressures.
- High-flow exhaust valve reduces exhalation for better overall breathing comfort.
- Diver-adjustable inhalation effort knob fine-tunes air delivery to suit personal tastes.
- Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch prevents free flows in cold water or when used as an octopus.
- Reversible hose attachment allows you to easily adjust hose routing for tech diving configurations.
- Super-flow hose features an oversized bore (larger inside hose diameter) that allows more air to flow on each inhalation.
- Ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn't inhibit airflow.
MK17 Evo First Stage
- Balanced diaphragm
- Chrome plated brass body
- Cold water: Anti-Freeze protection & Dry chamber
- Externally adjustable intermediate pressure
- Low pressure ports: 4 (2 High Flow Ports)
- High pressure ports: 2
- Tank connection: INT 230 bar / DIN 300 bar
- Weight: : INT 230 850g / 30oz - DIN 300 625g / 22oz
- Air Flow at 200bar: >6500 l/min - 230 SCFM
- Intermediate pressure: 9-9.8 bar / 130-142 ps
Scubapro MK17 Evo G260 Regulator - Features
?This feature allows the diver to adjust the inhalation setting from the set level and increase the effort required to open the 2nd stage valve to deliver air.
?The venturi control affects how air flows in the 2nd stage. In it's positive position the flow of gas creates a vacuum against the diapragm, helping to open the valve. In it's negative position it will divert gas back against the diaphragm helping to close the valve. It is basically used to help prevent free flowing.
|Cold Water Rated|
?Cold water has adverse effects on regulators and can cause some to freeze so each regulator combination must be tested during manufacturing for their performance in different water temperatures.
Cold water is defined by EN250 as below 10°C. If a regulator combination cannot meet the performance standards below 10°C then they are only suitable for warm waters.
EN250 / (EN250A >10°C)
To pass the regulator must provide at least 62.5 L/min of air at 50M depth above 10°C.
|Cold & Warm Water|
?Environmentally sealed 1st stages offer greater protection against freezing when diving in cold water (below 10 degrees C)
Scubapro have a new method of cold water proofing their first stages called the eXtended Thermal Insulating System or XTIS which still allows water into the first stage but the internal parts that come into contact with the water are coated to prevent ice from forming.
?Unbalanced regulators are affected by the pressure in the cylinder, becoming slighty harder to breathe from when the pressure starts to drop.
Balanced regulators are not affected by the cylinder pressure or depth.
Over-balanced regulators achieve unprecedented performance by increasing your air supply the deeper you go providing the best breathe for deep divers.
|High Pressure Ports|
?High pressure ports supply the pressure gauge and wireless transmitters for dive computers
|Low Pressure Ports|
?Low pressure ports supply the 2nd stages and inflator hoses
?An Unbalanced second stage is simply a lever operated valve that is opened and closed as the diaphragm is pulled inwards by the vacuum that is created when the diver inhales. An unbalanced second stage is affected by increased pressure at depth, slightly increasing the effort required to open the valve.
A Balanced second stage overcomes the effects of increased pressure by utilising a balancing chamber. This chamber takes some of the work away from the spring mechanism, allowing a smaller spring to be used which results in an easier breathe. As the chamber uses air to balance the valve it maintains the same resistance as the diver descends and ascends, keeping the inhalation effort the same.
?All regulators need to be serviced to keep them in working order as the parts inside them age and wear over time and with use. Most regulators need to be serviced once a year or after 100 dives with normal recreational use to replace parts and re-balance.
Some regulators use more modern materials or mechanisms that allow them to extend the servicing interval that can save you some money in the long run.
|2 Year - 100 Dives|
|Weight in Grams (approx)|
?The weight includes the first stage (DIN fitting), hose and second stage.
We offer free standard delivery on orders over £50.
Standard delivery is £3.70 for orders under £50. You will receive your order 2 - 4 days from the date of despatch.
Next Working Day is £6.50.