Scubapro MK19 EVO/A700 Scuba Dive Regulator System - REG391 INT
The MK19 EVO / A700 takes our extraordinary breathing A700 and pairs it with an environmentally sealed MK19 EVO first stage that’s extremely resistant to freezing and fouling of its inner mechanism. The MK19 EVO offers a dry ambient pressure chamber that is equipped with a double spring for optimum reliability, and a LP port swivel turret to maximize hose routing options. The muscular A700, with its precision handcrafted full-metal casing, front cover and valve housing, offers best-in-class breathing performance, including effortless inhalation and an ease of exhalation that is unmatched.
Features
- Metal second stage case construction uses a larger diaphragm inside a compact casing, increasing breathing sensitivity
- Air balanced second stage valve smoothes out the inhalation effort when diving at varying depths and supply pressures.
- Sectional exhaust tee and a first-rate purge help to deliver effortless inhalation and an ease of exhalation that is unmatched.
- Easy-to-use, adjustable inhalation effort knob to achieve maximum, personalized comfort
- Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
- Air-balanced first stage diaphragm delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate
- Environmentally sealed system prevents water and pollutants from fouling the inner mechanism and is extremely resistant to freezing
- Dry chamber is equipped with a double spring making it more compact and reliable.
- Two opposing high pressure ports allow the first stage to be positioned either up or down, plus provide for an optimum hose/transmitter layout
- Swivel turret comes with four High-Flow LP ports plus one axial Super High-Flow LP port to maximize hose routing options for technical diving layouts
What our Experts Think
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Outstanding cold-water performance – Environmentally sealed balanced diaphragm first stage resists freezing and prevents contaminants from entering the internal mechanism.
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Premium breathing comfort – The all-metal A700 second stage provides exceptionally smooth inhalation and effortless exhalation in all diving conditions.
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Consistent airflow at any depth – Air-balanced first and second stages maintain reliable performance regardless of tank pressure or breathing rate.
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Fully adjustable – Diver-adjustable inhalation effort and VIVA control allow precise tuning for comfort and free-flow prevention.
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Optimized hose routing – Swivel turret with multiple high-flow LP ports makes it ideal for streamlined recreational and technical diving setups.
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Built to last – Marine-grade chrome-plated brass construction and premium engineering deliver years of dependable performance in demanding environments.
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Nitrox compatible – Ready for use with up to 40% Nitrox right out of the box, offering added versatility for recreational and advanced divers.
Q&A
Maintenance Tips
- Rinse thoroughly with fresh water after every dive, keeping the first stage dust cap securely in place to prevent water from entering the regulator.
- Rinse only while the regulator is pressurized or ensure the dust cap is properly sealed before rinsing.
- Lightly operate the purge button and adjust the inhalation control and VIVA lever during rinsing to remove salt and sand from moving parts.
- Allow the regulator to air dry completely in a shaded, well-ventilated area away from direct sunlight and heat.
- Store with hoses loosely coiled to prevent kinks and avoid placing heavy objects on the regulator.
- Inspect hoses, mouthpiece, O-rings, and fittings regularly for cracks, leaks, corrosion, or wear before each dive.
- Avoid exposure to sand, oils, solvents, chlorine, and harsh chemicals that can damage seals and internal components.
- Have the MK19 EVO first stage and A700 second stage professionally serviced at least annually or according to the manufacturer's recommended schedule.
Damage 
Loss 
Theft 
