Scubapro Mark 25: Picture 1 regular
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Scubapro Mark 25 Regulator DIN, First Stage Only

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Scubapro Mark 25: Picture 1 regular

About Scubapro Mark 25

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 (IP) 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-Thru-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 (HP). The arrangement of high and low pressure hoses is crucial to diving comfort. Two opposite HP 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 (LP) - For ultimate freedom in the arrangement of LP 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 and offers a 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. The MK25 is manufactured from Marine-Grade Chrome Plated Brass, weighs 20.9oz (592g) and is covered by a limited lifetime warranty. Note: First Stage Regulator does not include a Low Pressure Hose.

Warranty Information

This product has a limited lifetime warranty.

Scubapro Mark 25 Features

  • High Performance, Reliable Scubapro Technology and Value
  • Superior Ultra-High Airflow System for Maximum Performance in All-Temperatures and Diving-Conditions
  • Ultra Stable Intermediate Pressure
  • High Performance in Warm and Cold Water to 4300psi (300 bars)
  • Air-Balanced Flow-Through Piston Design
  • Balanced Composite/Stainless Steel Flow-Thru Piston
  • Thermal Insulating System (TIS)
  • TIS: Prevents Freezing-Up and Malfunctioning in Cold Water Conditions
  • HP Ports: 2
  • LP High Flow (HF) Ports: 5
  • LP Ports Mounted on Swivel Turret Cap for Maximum Hose Routing
  • Weight: 20.9oz (592g)
  • Limited Lifetime Warranty
  • Note: LP Hose Not Included

Scubapro Mark 25 Regulator DIN, First Stage Only Customer Reviews Powered by TurnTo®

Reviewed by 3 customers

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Excellent First Stage


This first stage is perfect for deep dives. The flow rate will keep up with your breathing needs, and the balanced design will keep the performance constant as the tank pressure changes. It is good for moderately cold water, down to about 40 degrees F. For colder water, the Mk17 would be a better choice.


ScubaPro quality


After years of diving on old "affordable" regs, I made the leap to upgrade to this top of the line reg. Made possible by this great price point, bought 2 of these regs. Only negative, ScubaPro in their infinite wisdom requires a special / expensive proprietary tool to do a hose change on 2nd stage. I had my LDS disconnect that fitting for me.


I'll buy another one!


replacing all my old regulators (the ones that are not MK25) as they perform very good in deep dives.

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Questions & Answers Powered by TurnTo®

Questions about this item:

MIKE S  Hi, just need to know if this is a 200 or 300 bar DIN connection??, thanks!!!
ROBERT M  Hello, I confirm this is 300 bar working pressure with DIN connector. I'm very happy with this purchase :)
MIKE S  Robert, thanks!!!
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