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Instinct 15X Regulator

£199.00 RRP £263.00 SKU: 57389-1

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Mares Instinct 15X Regulator
Mares Instinct 15X Regulator Mares Instinct 15X Regulator Mares Instinct 15X Regulator Mares Instinct 15X Regulator Mares Instinct 15X Regulator Mares Instinct 15X Regulator Mares Instinct 15X Regulator

Instinct 15X Regulator

£199.00 RRP £263.00 SKU: 57389-1

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Instinct 15X Regulator

£199.00 RRP £263.00

Brand: Mares

Model: Instinct 15X Regulator

SKU: 57389-1

Please note: This item cannot be shipped outside the European Union - learn more

The Mares Instinct 15X Regulator is a cleverly designed hybrid regulator with the best parts of a conventional 2nd stage combinded with a Side Exhaust 2nd stage. The angled diaphragm ensures high performance in any orientation.


Mares have gone right back to the drawing board with the Instinct for a 2nd stage that performs better than most 2nd stages because it doesn't conform to the stereotypical design. The hose enters the 2nd stage at an ergonomic angle over the shoulder unlike many 2nd stages that are at a fixed 90°.

Side exhaust valve expells gas away from your face for a bubble free view of the world. The main diaphragm is angled which combined with the VAD, Vortex Assisted Design, and the vented opennings ensure high performance even facing strong currents.

Prescription Lenses


ACT Valve

DFC - Dynamic Flow Control


Total weight (g) INT: 1068g
Total weight (g) DIN300: 894g

Mares Instinct 15X Regulator - Features

FeatureProduct Specification
Adjustable Inhalation
?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.
Adjustable Venturi
?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
?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.
First Stage
?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
Second Stage
?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.
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. Learn more.

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.



We hope you will be completely satisfied with any product purchased from Simply Scuba.

However, you can return it for any reason within 28 days from the date of despatch for a full refund (less postage costs).

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