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About Scubapro MK25/S600 Regulator

The Scuba Pro MK25/S600 Regulator, SCUBAPRO has been the leader in the evolution of piston controlled first stages since its beginning; the MK25 carries on this heritage with an array of patented features ensuring unfailing performance. The MK25 is a balanced piston first stage, SCUBAPRO's absolute top performer. It is a superior regulator thanks to its ultra stable intermediate pressure resulting in an extremely punctual and constantly high delivery of air. This means instant airflow at any tank pressure and water temperature for a real carefree dive.

Air balanced flow-through piston- First stages with air balanced pistons deliver significantly more air to the second stage than any other first stage, while their performance is totally unaffected by the 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. A balanced piston performs equally in warm and cold water environments.

The MK25 has two opposite high pressure ports- The arrangement of high and low pressure hoses is crucial to diving comfort. Two opposite high pressure ports allow for an 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. Multiple low pressure ports- For ultimate freedom in the arrangement of low pressure hoses, the MK25 accommodates five HF (high flow) ports on a swiveling turret, which allows for 360 degree swivel of hoses. High flow ports deliver about 15% more air than conventional ports. Externally adjustable intermediate pressure- Allows authorized SCUBAPRO service technicians to quickly fine-tune and adjusts the first stage after maintenance without the need to disassemble it.

Cold Water Diving with SCUBAPRO-Diving conditions can be drastically different, including extreme cold water and outside temperatures, posing the possibility of a regulator "freezing". Therefore, resistance to freezing is imperative for the diver. All SCUBAPRO regulator systems are CE approved for 4300psi (300 bars) cold water diving. Some models go even beyond this super stringent qualification and have successfully been tested in extreme cold diving conditions at less than 36°F (2.2°C). As a specific anti-freezing measure, SCUBAPRO engineers have designed a patented finned cap for the MK25 first stages for optimal cold water diving. This finned cap is a Thermal Insulating System (TIS). The ribs of the TIS act as a radiator to increase the surface area of heat transfer from the water to warm up the internal parts that have been drastically cooled down by the gas pressure drop. The MK25 is manufactured from Marine-Grade Chrome Plated Brass. The MK25 First Stage offers a Machined, Marine-Grade Chrome Plated Body and Balanced Composite/Stainless Steel Flow-Thru Piston that would make any diver proud. It demonstrates SCUBAPRO's dedication to quality and creating positive diving experiences.

Because of the S600's Versatility, it can meet the diver's needs as frequently as the diver changes dive sites. The S600 is constructed of a Chrome-Plated Brass and Techno-Polymer Valve Housing, a Linear Air-Balancing Valve, and a top notch Air-Balancing System. This regulator's Air-Balanced Linear-Flow Valve allows the diver to use Less-Energy while Breathing Underwater; it makes breathing during a dive as simple as well, breathing in and out.

The S600 has a Diver Adjustable Inhalation Control that enables personal Adjustment of Breathing Effort. The S600's Diver Adjustable VENTURI Initiated Vacuum Assist (VIVA) Dive/Pre-Dive Control Switch and Extra High Flow Exhaust Valve account for Easy Inhalation & Exhalation at any Depth or Breathing Rate. The Regulator comes equipped with a 3/8" threaded Super-Flow Hose for Smooth Air Delivery. Precision Molded, Lightweight Components and Anti-Freeze Materials provide High Corrosion Resistance and Enhance Cold Water Performance. The Second Stage is equipped with a Comfortable Orthodontic Mouthpiece. The Regulator weighs 35.9 oz (1,018g) comes with an Owner's Manual and a Limited Lifetime Warranty.

The Scubapro MK25/S600 Regulator is most used by customers who consider themselves to be a Advanced among others. The Scubapro MK25/S600 Regulator is popular because customers like the following qualities of the Scubapro MK25/S600 Regulator: Adjustable, Comfortable, Effortless breathing, Nitrox Compatible.

Warranty Information

This product has a limited lifetime warranty.

www.scubapro.com
(800) 468-2822

Scubapro MK25/S600 Regulator Features

  • Flawless Performance of Scubapro's Best-Selling Air Balanced Second Stage
  • High Performance, Reliable Scubapro Technology and Value
  • Weight: 35.9 oz (1,018g)
  • Owner's Manual
  • Limited Lifetime Warranty
  • First-Stage: SCUBAPRO MK25, Yoke
  • Machined, Marine-Grade Chromed Plated Brass Body
  • Balanced Composite/Stainless Steel Flow-Thru Piston
  • Thermal Insulating System (TIS)
  • TIS: Prevents Freezing-Up and Malfunctioning in Cold Water Conditions
  • High Performance in Warm and Cold Water to 4300psi (300 bars)
  • HP Ports: 2
  • LP High Flow (HF) Ports: 5
  • LP Ports Mounted on Swivel Turret Cap for Maximum Hose Routing
  • Second-Stage: SCUBAPRO S600 Regulator
  • Versatility: Meets Diver's Needs as Frequently as Diver-Changes Dive Sites
  • Valve Housing: Chromed Brass & Techno-Polymer
  • Linear Air-Balancing Valve
  • Top-Notch Air-Balancing System
  • Less-Energy, Breathing-Underwater
  • SCUBAPRO's Performer: Constant & Effortless Air Flow
  • Diver Adjustable Inhalation Effort for Personalized Breathing Control
  • VENTURI Initiated Vacuum Assist (VIVA)
  • VIVA: Dive/Pre-Dive Control Switch Prevents Free Flow in Cold Water
  • High Flow Exhaust Valve that Reduces Exhalation
  • Super-Comfort High-Flow (HF) Mouthpiece
  • 3/8" Threaded Super-Flow Hose with Strong and Durable Kevlar Lining

Scubapro MK25/S600 Regulator Specifications

1'st Stage Type
Balanced Flow-Thru-Piston
LP Ports
Five 3/8" Thread-HF
HP Ports
Two 7/16" Threaded
Adjustable 2'nd Stage
Yes, Adjustable Breathing Resistant's, Venturi Dive/Pre-Dive Switch
2'nd Stage Type
Air-Balancing Valve
Materials
First Stage: Body Chromed Brass, Piston: Composite/Stainless Steel, Second Stage: Case: Techno-Polymer, Valve Housing, Chromed Brass & Techno-Polymer
Hose Thread
3/8"
Hose Length
32" (81.3 cm)
Total Weight
35.9 oz (1,018g)
Weight [with packaging]
3.4 lb
Weight [with packaging]
3.4 lb

MK25/S600 Regulator Customer Reviews

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by PowerReviews
Scubapro MK25/S600 Regulator
 
4.0

(based on 8 reviews)

Ratings Distribution

  • 5 Stars

     

    (6)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (2)

75%

of respondents would recommend this to a friend.

Pros

  • Comfortable (5)
  • Effortless breathing (5)
  • Adjustable (4)
  • Nitrox compatible (4)

Cons

    Best Uses

    • Warm water (3)
      • Reviewer Profile:
      • Advanced (4)
      • Diving Type:
      • Open water diving (6), Drift diving (5), Night diving (5), Wreck diving (4), Outdoor professional (3)
      • Was this a gift?:
      • No (7)

    Reviewed by 8 customers

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    (2 of 2 customers found this review helpful)

     
    5.0

    Best warm water reg set there is

    By Igrex

    from Charleston sc

    About Me Advanced

    See all my reviews

    Pros

    • Comfortable
    • Effortless Breathing
    • Finish Quality Is Awsome
    • Great Mouthpiece
    • Nitrox Compatible
    • Reliable

    Cons

      Best Uses

      • Extreme Depths
      • Warm Water

      Comments about Scubapro MK25/S600 Regulator:

      MK25/S600 is IMHO best reg setup for the warm water (I used sealed diaphragm MK17 with S600 for cold and dirty water). Everything feels just right and comfortable to the point you forget it is there at all. Quite disagree with one of the reviewers that gave one star because he got ripped-off by service center (or has neglected to service to maintain the warranty parts, or have ruined the first stage by not closing the cap, etc) this should have not been an assessment.

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

      Comment on this review

      (1 of 4 customers found this review helpful)

       
      1.0

      Buyereware - servicing costs are insane

      By DFW diver

      from Houston

      About Me Advanced

      See all my reviews

      Pros

        Cons

          Best Uses

            Comments about Scubapro MK25/S600 Regulator:

            We bought 2 sets of s600/mk25 regs 2 years ago and are generally satisfied with the quality and performance of the product. HOWEVER, we had the first service done at a LDS at cost of a few pennies shy of $300 (yes, almost THREE HUNDRED DOLLARS) for this service. Never again will I buy any scubapro equipment again.

            Comment on this review

            (2 of 3 customers found this review helpful)

             
            1.0

            Did not meet expectations

            By Sam

            from Denver Colorado and Maui

            About Me Advanced

            Verified Buyer

            Pros

              Cons

              • Causes Jaw Fatigue
              • Difficult Purging
              • Heavy
              • Poor Design

              Best Uses

                Comments about Scubapro MK25/S600 Regulator:

                My expectations for the product given the many positive reviews and magazine reviews were high. Almost all of my dives are self guided. I am a mechanical engineer and an equipment fanatic. The MK25 frst stage is excellent and gets a 5 star rating for performance, connection locations, design, manufacturing fit and finish and heavy duty construction giving high confidence of reliability and durability. You can not go wrong with this first stage as it could easily be your first choice first stage for over a decade to come. The S600 Reg has a good reputation and has adjustable flow resistance and a pre dive/dive selector knob. Both of these features performed fine and feel smoothe and solidly built. Air flow at any depth and or high exertion high flow need performed perfectly. If you are a big diver , dive deep and or exert yourself underwater this baby can deliver the air. Now the bad and the ugly: The fit and finish were not what they should have been. There were small threads of rubber caught under two of the pins that hold the front plate in place. Joints in the plastic housing were not uniform. The small removable cover on the underside of the reg had a sharp rough edge potruding to the extent that I filed it smoothe before first use. none of these were serious, but made me wonder about the precision and quality of the parts that mater. The mouthpiece did not suit me at all and is a must change. Too big and too intricate and the material feel is average. Between the stiff scuba pro hose and this mouthpiece you may find yourself holding the reg in place with your hand to give your jaw a rest - I did. The reg bubble discharge was terrible from a noise, size of bubble and location of bubble standpoint. I have never noticed this as even a possible problem in decades of diving having owned and used many regs over the years. This is my first negative review of a piece of equipment ever. I almost forgot because not an issue with any other reg. The worst purging reg I have ever used. The purge is easy to operate, but once you have water in the reg it will spit water for a long long long time. If practical you need to have it in your mouth when you enter the water and keep it there until your done. Really bothersome. This rivals the bubble problem for worst performance item of the reg.

                • Was this a gift?:
                • No

                Comment on this review

                (2 of 2 customers found this review helpful)

                 
                5.0

                Best overall 1st stage/reg setup

                By Capt Matt

                from South Carolina

                About Me Professional

                Pros

                • Adjustable
                • Comfortable
                • Effortless Breathing
                • Nitrox Compatible

                Cons

                  Best Uses

                    Comments about Scubapro MK25/S600 Regulator:

                    Scubapro makes excellent equipment; everyone knows this. The first stage is designed to perform in an array of environments and is virtually indestructible. The S600 is a staple of scubapro's regs- brute, effortless breathing, adjustable, small profile and easy cleaning make this a very popular reg set up from beginners to professional divers.

                    As a professional diver I have used and abused equipment. Commercial diving 9 days strait of diving 4-6 times a day, upside down looking in holes in the reef with smooth breathing, multiple dives to 180ft, heavy sediment, no fresh water wash down for weeks on end, smashed by tanks and equipment, banged around in rough seas and this reg just keep on going.

                    When you life depends on your equipment there is a reason so many professionals use scubapro equipment. Spend the extra little money and get a good set up; how much is your life worth?

                    • Diving Type:
                    • Deep diving, Drift Diving, Night Diving, Open Water Diving, Rescue Diving, Spearfishing, Wreck Diving
                    • Was this a gift?:
                    • No

                    Comment on this review

                     
                    5.0

                    Awesome regulator

                    By Rick

                    from Oklahoma City, OK

                    About Me Professional

                    See all my reviews

                    Verified Buyer

                    Pros

                    • Adjustable
                    • Comfortable
                    • Effortless Breathing
                    • Nitrox Compatible

                    Cons

                      Best Uses

                        Comments about Scubapro MK25/S600 Regulator:

                        Smooth, easy breathing

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

                        Comment on this review

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                        Q&A

                        Questions & Answers Powered by TurnTo®

                        Questions about this item:

                        EDUARDO R  Sirs, this equipment is yoke?
                        MIKE C  Yes it is yoke.
                        Shopper  is this available in a din?
                        KATHY W  Can you sell the S600 separately? I already have the MK25. Thanks much.
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