ScubaPro - MK25AF / X650

This regulator system features a high flow first stage with an air balanced high performance second stage chosen by military divers for its durability, simplicity, and reliability.

MK25 First Stage

• An unfailing performance, due to patented design. The MK25 first stage can accept all types of SCUBAPRO second stages, and will be your favorite for all diving experiences.
• Machined marine grade chrome plated brass body. Excellent resistance to corrosion, long lasting, and excellent value for its price.
• Patented over balanced composite/stainless steel piston. Faster dynamic response and extra high flow, ultra stable intermediate pressure at all tank pressure.
• Thermal Insulating System (TIS) on piston and spring. Cold water resistant. Exceeds CE cold water diving requirements.
• Externally adjustable intermediate pressure (patent pending). Easy and fast adjustment by authorized technician.
• 5 High flow low pressure swivel ports. Ergonomic distribution of the hoses for less jaw fatigue and full option for octopus and accessories.
• Dual high pressure ports. Console or pressure gauge can be mounted either right or left hand.
• Available in 232 bar yoke or DIN system. Versatile use depending on geographical region.
• New wound conical single stainless steel wire filter. Improved flow characteristics for absolute safety will prevent clogged filters from exploding.
• Enlarged water balancing chamber holes. For cold water diving, improves heat transfer and increases resistance to freezing. Exceeds CE cold water norms at 300 bars.
• Also available in Titanium and Stainless Steel Alloy version

X650 Second Stage

Based on the renowned D400, this one of a kind second stage includes a unique valve design. With new break through design and components, this extraordinary second stage offers the best performance on the market.

• Straight coaxial flow valve. The air flow goes directly into the mouth to prevent any loss in performance.
• New smaller poppet. With quicker dynamic response to inhalation demand.
• Diaphragm and exhaust valve positioned below the mouthpiece. This structure, in combination with a streamlined shape and lighter weight minimizes jaw fatigue.
• New 15% wider exhaust valve20% less exhalation effort than the other second stages.
• Dive/pre-dive control switch. To prevent accidental free flow.
• New diver adjustable inhalation control. To quickly increase or decrease the inhalation effort and fine-tune the second stage to any diving condition including cold water. A unique design with asymmetrical ribs to prevent excessive unscrewing and to have the clear perception of “zero” point.
• Lightweight orthodontically designed mouthpiece. Comfortable, reducing jaw fatigue and gum irritation.
• Also available in Titanium version