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About Mares Instinct 12S Regulator

The all chrome plated marine brass first stage regulator is a balanced diaphragm design which is environmentally sealed. The diaphragm membrane transmits the pressure changes to the internal mechanism eliminating the need for the surrounding water to enter the intricate mechanism. The benefit of this type of first stage design is that none of the internal parts are exposed to contaminants such as salt, sand, chlorine or pool acids. These environmental contaminants cause corrosion and mineral deposits to form on the internal mechanism deteriorating regulator performance.

The Instinct 12S uses Tri-Material Valve Technology. This patented technology created to optimize performance, safety and reliability. The valve is covered with hard Polyurethane (PU) and the sealing surface is a layered with a soft PU for a perfect seal. Tri-material (brass, soft PU and heavy-duty" PU) reaches new levels of durability.

Another unique feature of the first-stage is the Dynamic Flow Control (DFC). The DFC system minimizes the intermediate pressure drop during inhalation, making it possible to use a simpler more reliable second stage. No type of manual adjustment of the second stage is necessary due to the consistency derived from a first stage that guarantees a stable flow of air, even under extreme conditions. The first stage comes equipped with two 7/16" High Pressure Ports and four 3/8" Low Pressure Ports.

The Instinct's Small and Compact Techno-Polymer second stage has superior performance with a Side Exhaust that Deflects the Exhaled Breath, so that hardly any bubbles crowd your view. Compensating openings in the back minimize the likelihood of free-flows in strong current. The oversized purge button makes it easy to find and easy to use, even when wearing thick gloves. The Instinct Second Stage with its Vortex Assist Design (V.A.D.) System: all Mares second stages offer the unique patented VAD system. The air bypass tube conveys air to the mouthpiece creating a swirling vortex with a low pressure area in the center this keeps the diaphragm down during inhalation, giving very sensitive and easy breathing at all depths. Regulator is equipped with Mares Fluid Dynamic Deflector (FDD) that receives and properly directs the airflow from the bypass tube directly to the mouthpiece.

The mouthpiece is made of soft hypoallergenic silicone: limiting jaw fatigue and offering a secure fit even after very long dives. Mares developed the Superflex hose after many years of testing and research. The results achieved far surpassed the tests required by EN250. Hose is extremely light weight and exceptionally soft, guaranteeing the maximum freedom of movement and further reducing jaw fatigue. Superflex hose is 3/8" Threaded High Flow hose and is 29.5" (75 cm) in length. Regulator has a total weight of 29.1 oz (825 g), comes with a Comprehensive Owner's Manual and is covered by a limited lifetime warranty.

Warranty Information

This product has a limited warranty of 24 months.

www.mares.com
(800) 323-0465

Mares Instinct 12S Regulator Features

  • Revolutionary Design
  • Hose: Superflex 29.5" (75 cm)
  • Weight: 29.1 oz (825 g)
  • Comprehensive Owner's Manual
  • First Stage Features:
  • Mares 12S Regulator
  • Balanced Diaphragm
  • DFC System
  • Material: Chrome Plated Marine Brass
  • Environmentally Sealed Design
  • Design Provides Protection from Sand, Salt, Chlorine, Pool Acid and Contaminants
  • Tri-Material Valve Technology
  • 4 LP and 2 HP Ports
  • Second Stage:
  • Mares Instinct Regulator
  • Downstream Demand Valve
  • Material: Techno-Polymer
  • Small & Compact Design
  • Side Exhaust, Deflects Exhaled Breath
  • Compensating Openings, Prevent Free-Flow in Current
  • Oversized Purge Button
  • Vortex Assist Design (V.A.D.) System
  • Fluid Dynamic Deflector (FDD)
  • Mouthpiece: Soft Hypoallergenic Silicone
  • Reduced Jaw Fatigue

Mares Instinct 12S Regulator Specifications

1'St Stage Type
Balanced Diaphragm
Lp Ports
4 Lp 3/8" Thread
Hp Ports
2 Hp 7/16" Thread
Nitrox Compatible
Yes
2'Nd Stage Type
Downstream Demand Valve
Materials
First Stage: Chromed Brass, Second Stage Case: Techno-Polymer
Hose Thread
3/8"
Hose Length
29.5" (75 Cm)
Total Weight
29.1 Oz (825 G)
Weight [with packaging]
3.1 lb
Mfr #
SKU
MRSI12S

Instinct 12S Regulator Customer Reviews

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Mares Instinct 12S Regulator
 
3.5

(based on 4 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (1)

75%

of respondents would recommend this to a friend.

Pros

  • Effortless breathing (3)

Cons

    Best Uses

        • Reviewer Profile:
        • Advanced (3)
        • Diving Type:
        • Open water diving (4)
        • Was this a gift?:
        • No (4)

      Reviewed by 4 customers

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      Displaying reviews 1-4

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      1.0

      Disappointed

      By etlw1215

      from Hong Kong

      About Me Beginner

      Verified Buyer
      Staff Reviewer

      Pros

        Cons

          Best Uses

            Comments about Mares Instinct 12S Regulator:

            The Mares Instinct 12S Regulator had some breathe in problem during my first dive. It was very hard to breathe in together with some noise. I still don't know what's wrong with it but I am too far to send it back for warranty, so I just send it to a local service shop to check. I hope it is only a small problem, I am very disappointed with it.

            • Diving Type:
            • Open Water Diving
            • Was this a gift?:
            • No

            Comment on this review

             
            5.0

            Amazing product

            By Charles Blagitz

            from Sao Paulo, Brasil

            About Me Advanced

            Verified Buyer

            Pros

            • Adjustable
            • Comfortable
            • Effortless Breathing

            Cons

              Best Uses

              • Cold Water
              • Extreme Depths
              • Warm Water

              Comments about Mares Instinct 12S Regulator:

              Using it into my dives all the time

              • Diving Type:
              • Open Water Diving, Rescue Diving
              • Was this a gift?:
              • No

              Comment on this review

               
              3.0

              50/50

              By JM

              from Mexico

              About Me Advanced

              Pros

              • Compact
              • Effortless Breathing
              • Light weight
              • Practical

              Cons

              • Poor Design
              • Poor Materials
              • Short Hose

              Best Uses

              • Recreational

              Comments about Mares Instinct 12S Regulator:

              Not a bad idea for a regulator do to its innovative features although the purge button is made out of very weak plastic. This button broke off the 2nd dive after it took some light hits and bangs with the other equipment around the boat. Very fragile :S
              I would recommend it although users will need to be very aware of it most of the time trying to avoid it from banging around other equipment, boat, etc.

              • Diving Type:
              • Drift Diving, Open Water Diving, Photography, Rescue Diving, Shark Diving, Wreck Diving
              • Was this a gift?:
              • No

              Comment on this review

               
              5.0

              A very convenient design

              By RY

              from San Diego,CA

              About Me Advanced

              See all my reviews

              Verified Buyer

              Pros

              • Comfortable
              • Effortless Breathing
              • Nitrox Compatible

              Cons

                Best Uses

                  Comments about Mares Instinct 12S Regulator:

                  This regulator is relatively compact (though not as compact as I expected to be), the side exhaust performs very well and gets all the bubbles out of the way.
                  It comes with a light flex hose which is personally my favorite hose preference.
                  Pair it with a couple more such hoses, an inflator integrated alternative air source and a compact pressure gauge to build a perfect travel reg!

                  • Diving Type:
                  • Night Diving, Open Water Diving
                  • Was this a gift?:
                  • No

                  Comment on this review

                  Displaying reviews 1-4

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                  Q&A

                  Questions & Answers Powered by TurnTo®

                  Questions about this item:

                  Shopper  Why Did You Choose This?
                  Chris B  Recommendation from local dive shop and it was cheaper here!
                  Shopper  how does the instinct 12s compare to the cressi m9??
                  Frank L  Very similar features, with the exception of the 2nd stage for Instinct, which has a unique design. It is also lighter weight, and designed to push exhaust bubbles away from the diver.
                  Shopper  how does the instinct 12s compare to the cressi m9??
                  Frank L  Very similar features, with the exception of the 2nd stage for Instinct, which has a unique design. It is also lighter weight, and designed to push exhaust bubbles away from the diver.
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