Aqualung LEG3ND MBS Yoke Regulator Set with Octo

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.

The Master Breathing System combines venturi adjustment and inhalation resistance adjustment into a single control instead of two separate knobs. That means one input tunes how freely the second stage delivers gas, which is simpler to manage in gloves or during a task-loaded dive. The LEG3ND MBS second stage is pneumatically balanced, so breathing effort stays stable as tank pressure drops.

This set includes the LEG3ND yoke first stage, the LEG3ND MBS primary second stage on a 730 mm hose, and the LEG3ND octopus on a 1 meter yellow hose with a yellow front cover. This set includes only the first stage, the LEG3ND MBS primary second stage and the LEG3ND octopus; gauges and other accessories are sold separately. The first stage has 2 HP ports (7/16 in) and 4 MP ports (3/8 in) to add those.

The yoke connection on this LEG3ND set fits standard 3,300 psi (232 bar) cylinder valves. Yoke clamps over the valve rather than threading into it. The yoke connection fits standard 3,300 psi (232 bar) cylinder valves. If you dive DIN valves, confirm the valve type before ordering.

The LEG3ND octopus uses a 1 meter yellow hose and a yellow front cover so the alternate air source is instantly identifiable and easy to pass in an out-of-gas emergency. The LEG3ND octopus uses a 1 meter yellow hose and yellow front cover, while the primary second stage is on a 730 mm hose. Because both second stages share the same LEG3ND architecture, the donated regulator breathes like your primary.