ScubaPro MK25 / A700 Regulator System 12.770.010 033325

Video: ScubaPro MK25 / A700 Regulator Video Review 360 product view
Mfg Part #: 12.770.010
  • Maximum performance in all temperatures and diving conditions - including ice diving
  • 360 degree 1st stage swivel
  • Balanced for superior breathing performance 
  • "Diver Adjustable" Air flow
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • "Diver Adjustable" venturi to prevent unwanted free-flow
  • Egronomic, safe-grip mouthpiece for comfort
  • High performance regulator

Customer Reviews for ScubaPro MK25 / A700 Regulator System:

See the top 20 most helpful scuba gear reviews

Average Customer Review: based on 4 reviews.

Rating: Top of the line
Reviewer: Burton O.  -  View all my reviews
If youre researching top of the line regulators, you have to consider ScubaPro and this is their best. It reminds me of their 2nd stage regulators from the late 80s with all the chrome. Its very light and well built. A huge step up from mid-grade regulators, its the easiest breathing regulator Ive owned and Ive been diving for over 20 years. is an excellent company - the best online store as far as Im concerned. You get manufacturers warranties and no gray-market products like LeisurePro sells.

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91 out of 171 people found this review helpful.

Rating: ScubaPro MK25 / A700 Regulator System Review - Scuba Gear Customer Reviews
Reviewer: Greg Deen
Its top of the line. You wouldnt even know your under water if you had your eyes closed. Breathes with such ease. A700 is worth the extra.

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8 out of 14 people found this review helpful.

Rating: Great reg
Reviewer: Jeffrey Lai  -  View all my reviews
so far i am very happy with this regulator.

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35 out of 81 people found this review helpful.

Rating: very good
Reviewer: miss c.
very good

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29 out of 55 people found this review helpful.

Questions and Answers for ScubaPro MK25 / A700 Regulator System:

  • Marc:

    Im wondering which regulator to buy the scuba pro mk25a600 or the a700?

    Bill  (Certified Scuba Instructor at

    The A700 is the top of the line for Scubapro. It is a metal second stage so works well for any diving conditions, including cold or ice environment. The S600 has been one of their top sellers and ranks as one of the best performing regulators. The second stage will be lighter than the A700.

  • Lili:

    Which is better between the Scubapro mk25/S600 or Scubapro mk25/a700 and Atomic M1? Tks

    Bob  (Certified Scuba Instructor at

    You are asking which is better between a brand new Ferrari, Aston Martin or Lamborghini. They all are very high performance items. In this case, though, the Atomic M1 is the first regulator designed specifically for mixed gas diving of components with a very low friction rating in contact with O2. If you don't have a specific need for that sort of regulator, then I'd not go that route.

  • Lili:

    @Mark - thanks for your answer on my previous question but if the Atomic M1 is better than the Scubapro mk25/a700 then why is the M1 cheaper? When was the M1 first manufactured? What about the mk25, s600 or A700? Thanks much L

    Clarke  (Certified Scuba Instructor at

    Hello Mark, Thank you for your inquiry! Why is the Atomic M1 less expensive than the SCUBAPro MK25/A700? The materials used, features, benefits and manufacturing determine the selling price by the manufactures. The Scubapro MK25/A700 is a recent addition to the SCUBAPro line of fine products. If you would like to place an order, please contact one of our certified Dive Instructors at by calling 800-247-2822 <> 949-221-9300 or e-mail us at:

  • George:

    Sirs: I just purchased the ScubaPro MK25 / A700 Regulator from Last weekend, I had the face of my second stage fall off a rental unit here in the Philippines, and I had a couple of big drinks of saltwater before I got over to my octo. And other than the fact that it is quite the heaviest first stage I have ever lifted, it looks great. You can imagine how pleased I now have something with bullet-proof reliability! (I prefer that my salty drinks are Margaritas!) My question is: do you mount the first stage (yoke-style) with the low pressure outlets up or down? The instructor mounted it with the low pressure ports up (which maximixes rotation), but traditionally I have mounted similar units with the low pressure ports down to make a compact profile for the unit and to avoid banging my head on it. As this is a piston-style reg, I guess the case could be made that it is a matter of indifference - the reg delivers the same amount of air in any position. However, I would some thoughts from people more knowledgable than I. Many thanks, Ged Smith

    Bill  (Certified Scuba Instructor at

    Setting the hoses up on the 1st stage is personal preference. It does not effect the performance of the regulator with the ports up or down.

  • Colin:

    Does the MK25/A700 regulator system have an advantage over the MK17/A700? If so, is it worth the price difference? Thanks

    Greg  (Certified Scuba Instructor at

    The difference is in the first stage regulator. The ScubaPro MK25 uses an air balanced high flow piston. This regulator has a first stage swivel and only one high flow second stage port. The ScubaPro MK17 uses a balanced diaphragm. This regulator does not have a first stage swivel and two high flow second stage ports. Environmentally sealed regulators use the balanced diaphragm to create a “dry Chamber” for air regulation.

  • Jess:

    Which is easier and better of the two: this Scubapro MK25/A700 or the Atomic M1?

    Bob  (Certified Scuba Instructor at

    Both manufacturers are well known to make top of the line, high performing scuba equipment. A diver could not go wrong with either choice.

  • Lili:

    @Clarke - its disappointing that you did not answer my question but gave me a couple of links to look into. Again, I was advised by Your Bill to buy an Atomic M1 as opposed to the Scubapro Mk25/a700. I wanted to know why the M1 was cheaper than the mk25/a700 if it was better. 2) when did the m1 come out? When did the a700? Thank you

    Clarke  (Certified Scuba Instructor at

    Hello Lili, Thank you for your inquiry! The M1 employs state-of-the-art metals specifically chosen for extreme diving situations. Monel parts are used internally in the first stage for high strength, corrosion-resistance and oxygen compatibility. 316 Stainless Steel, multi-layer Zirconium coated Brass, and Titanium are used throughout the second stage. The M1 valve body is Zirconium/Nickel over Brass and the seat saving orifice is Stainless Steel. The date of when the M1 arrived on scene is not stated on Atomic's web site. For more information please visit: If you would like to place an order, please contact one of our certified Dive Instructors at by calling 800-247-2822 <> 949-221-9300 or e-mail us at:

  • Jeffrey:

    is this reg out of stock? as i cant see them in the site

    Bob  (Certified Scuba Instructor at

    For more information on product availabilty please contact our instructors at or 800-34SCUBA

  • Jay:

    1. What is the cost if I only wanted to purchase the second stage of the MK25/A700 Regulator System? 2. Do you give keyman deals to instructors who work/teach at a SCUBA retail store that sells primarily SCUBAPRO equipment?

    Darrick  (Certified Scuba Instructor at

    Hello Jay, here is the link to the 2nd stage only: As for the key man pricing you would need to deal directly with the manufacture or the owner of your current dive shop.

  • hettie:

    I want a swivel on my second stage. Can you do that. With the scuba pro mk25/m700? Extra cost...exta time in getting it?

    Darrick  (Certified Scuba Instructor at

    Hello Hettie, here is the swivel that would work for your 2nd stage regulator: This is also something that you would be able to install yourself.

The MK25 teamed with our exceptional new A700, offers superior ultra-high airflow system for maximum performance in all temperatures and diving conditions.
SCUBAPRO is synonymous with piston-controlled first stages. Our MK25 underscores this heritage with an array of patented features and ultra-stable intermediate pressure, for an extremely punctual and consistent high delivery of air.
The MK25 balanced piston first stage is our absolute top performer, making this system our very best.
Air balanced flow-through piston provides constant and effortless air flow unaffected by changing tank pressure.
Newly polished chrome edition, available uniquely with A700 system, with 5 low pressure and 2 high pressure ports plus swiveling turret for convenient arrangement and personalisation of your gear.
Anti-freeze protection for all diving temperatures and externally adjustable intermediate pressure for easy maintenance.
Available in either 232bar INT or 300bar DIN configuration.

Technical Information
MK25 First Stage
Air balanced flow-through piston
Chrome plated brass body
Anti-Freeze protection
Externally adjustable intermediate pressure
Low pressure ports: 5 on swivel turret
High pressure ports: 2
Tank connection: INT232 bar / DIN 300 bar
Weight: INT232 (g/oz): 825 / 29.1 /DIN 300 (g/oz): 592 / 20.9
Air Flow at 200 bar (l/min / SCFM): >8500 / 301
Intermediate pressure (bar/psi): 9-9.8 / 130-142
A700 Second Stage
Air balanced valve
Coaxial flow
Diver-adjustable inhalation effort
Diver-adjustable Venturi-Initiated Vacuum Assist (VIVA)
Super-flow hose
High comfort orthodontic mouthpiece
Full metal case
Full metal valve housing
Weight: 265g / 9.3oz
Air flow at 200 bar: 2000 l/min - 71 SCFM
Maximum low pressure: 14 bar / 203 psi

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