Cressi MC11 SC + Zen Pro Regulator

Cressi MC11 SC + Zen Pro Regulator

The Cressi MC11 SC + Zen Pro combines a compact travel-friendly layout with cold-water features in both stages. Its dry-sealed diaphragm first stage supplies a 149 g Zen Pro second stage, whose thermoconductive casing helps transfer heat to the parts cooled by expanding gas.

Features and benefits

• Dry environmental chamber. A sealed chamber keeps the first-stage spring mechanism away from surrounding water and suspended particles. This helps limit contamination and supports the regulator’s cold-water performance.
• PressureSync control. The first-stage diaphragm mechanism helps stabilise the intermediate pressure feeding the second stage throughout the breathing cycle.
• Thermoconductive Zen Pro body. The casing transfers heat from the surroundings towards internal components. This supports cold-water operation while keeping the second stage light.
• Radial pressure openings. Openings around the front cover distribute water pressure across the diaphragm. This helps reduce unwanted valve activation from moving water, alongside the Venturi pre-dive setting.
• Dive/pre-dive control. The Venturi lever changes how the air stream assists inhalation. Use the pre-dive position during surface handling and while an alternate second stage is stowed, then the dive position when breathing from it, following the manual.
• Compact hose layout. Two high-pressure and four low-pressure ports allow your technician to position the pressure instruments, second stages and inflator hoses around your equipment.

Setup and compatibility

Choose the DIN or yoke option to match your cylinder valve and pressure rating. Have the complete regulator assembly configured and checked by a qualified technician. The maximum usable pressure is limited by the lowest-rated component in the system.

Cold-water use requires the correct first stage, second stages and accessories, together with appropriate training and operating procedures. Follow the limits in the regulator manual.

Care, rinsing and storage

After each dive, connect the assembled regulator to a scuba cylinder and open the valve to pressurise the system. Keep it pressurised while fully submerging the first stage, second stages and connected hoses in fresh water. This allows thorough cleaning of the exposed components and hoses while helping prevent water entering the internal air passages, where it can cause corrosion and damage. Keep the cylinder secure throughout cleaning.

For routine cleaning, Dive Gear Australia recommends Cressi Neoclean Wetsuit Wash Neoprene Cleaner 500 mL or Revivex Wetsuit Shampoo 10 oz to help remove salt, chlorine and everyday residue. Dilute according to the cleaner’s label, then rinse thoroughly with fresh water.

Keep the regulator pressurised throughout washing and rinsing. Lift it out of the water and dry the first stage and cylinder connection before closing the cylinder valve, releasing the pressure and disconnecting. Fit the clean, dry dust cap, then allow the regulator to dry in the shade. Store it with the hoses loosely curved, without sharp bends or tension.

Before each dive, inspect the mouthpiece, hoses and connections for wear or damage. Have your regulator serviced by an authorised Cressi technician at the interval specified in its manual, or sooner if it leaks, is damaged or its breathing performance changes. Leave internal adjustments and repairs to a qualified technician.