Scubapro MK11 EVO/C370 Regulator

Follow the interval in your regulator's manual, since manufacturers commonly specify an annual inspection or a set number of dives and many warranties depend on it. A regulator is life-support equipment, so service belongs with a factory-trained technician rather than being attempted at home. Have it looked at sooner than scheduled if you notice increased breathing effort, free-flow, bubbles, or water in the second stage.

Make sure the dust cap is dry and firmly seated over the first-stage inlet before the regulator goes anywhere near water, because water inside the first stage is the leading cause of internal corrosion. Rinse in fresh water without pressing the purge button, since purging while depressurized can draw water back into the second stage. Shake out the water and hang it to dry with the hoses in wide, gentle loops rather than tight bends.

Regulators travel well and are usually best carried in hand luggage where they will not be crushed or lost. A regulator holds no gas of its own, so there is nothing inherently problematic about it on an aircraft, though the airline and security screeners always have the final say. Pack it dry with the dust cap in place, in a padded regulator bag or wrapped in soft gear.

Many modern regulators are supplied as suitable for nitrox mixes up to 40 percent oxygen, which is the widely used recreational industry standard, while anything above that requires dedicated oxygen-clean equipment and procedures. Confirm what your specific regulator's manual states, and follow your nitrox training and your fill station's requirements. Never assume a regulator is oxygen-service clean simply because it looks clean or is new.

A yoke (A-clamp) fitting clamps over the tank valve and is the most common connection across much of the recreational world, while a DIN fitting screws into the valve and is standard in much of Europe and in technical diving. DIN captures the o-ring inside the threads, which many divers consider more secure, but yoke is often what rental cylinders provide. Adapters exist in both directions, so check what is used where you dive before deciding.

The octopus is your backup second stage, carried so you can share air with a buddy who is out of gas, or breathe from it yourself if your primary fails or free-flows. It is normally on a longer, brightly colored hose so it is easy to find and hand over under stress. Secure it in the triangle between your chin and the bottom of your rib cage so it is instantly accessible and not dragging through sand or coral.

Store it fully dry, out of sunlight, with the dust cap in place and the hoses in wide loops rather than tightly coiled. Avoid hanging it by the second stages for long periods, which stresses the hose fittings; laying it flat in a padded bag or hanging it by the first stage is kinder. If it has sat unused for a long stretch, have it checked before your next trip rather than assuming it is ready to dive.

Yes. The C370 has an impact-resistant faceplate with diver-changeable snap-on color frames you can swap yourself. Graphite is supplied as the standard frame, with white, blue, yellow, turquoise and pink offered as additional colors sold separately.

The MK11 EVO has four high-flow low pressure ports and two high pressure ports. The HP ports are set at a 15-degree angle to improve hose positioning and streamline the routing of a pressure gauge or transmitter. The four high-flow LP ports provide flexible hose routing options.

The INT (Yoke) version weighs 2.465 lb and the DIN version weighs 2.002 lb. Overall dimensions are 6.5" L x 8.66" W x 3.15" H. A 75 cm (29.5") low pressure hose, a 4mm Allen key and the manual are included, which keeps the packed size compact.

It is rated for warm, temperate and cold water. The MK11 EVO uses a balanced diaphragm design with a forged brass body and metal fins that enhance thermal exchange, which supports reliable delivery in colder conditions. The system is CE certified to EN250A European Standards. Scubapro does not publish a specific minimum temperature figure for this model, so follow your training agency's cold water guidance.