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You cannot breathe directly out of a scuba tank because of the high pressure. A regulator reduces pressure to safe a level that can be inhaled by the diver. A diving regulator has two parts: the First Stage reduces the tank pressure and connects it to the Second Stage which contains the mouthpiece for breathing

Aqua Lung Legend LX Twilight Supreme Regulator


A top-of-the line, fully adjustable regulator that joins the existing Legend LX.

Out of Stock

A top-of-the line, fully adjustable regulator that joins the existing Legend LX. The Twilight Legend LX includes a smaller Comfo-Bite mouthpiece and a lighter second stage to reduce jaw fatigue, the revolutionary Master Breathing System (MBS) for simple breathing comfort control, and its own regulator bag for safe and stylish storage.

Number of models1 - Legend LX Twilight Supreme DIN
Type of first stageOver-balanced diaphragm design, environmentally sealed
First stage weight din (grams)668
First stage length (mm)74.7
Auto-Closure Device (ACD)YES
First stage MP chamberEnlarged, symmetrical, all ports provide equal access
Number of HP ports2
Number of MP ports4
Environmental Dry KitStandard
First stage exteriorChrome over marine brass
First stage handwheelTriangular shape with oversized soft grip ribs, auto-drain
First stage dust capRedesigned so it will not inadvertently open the auto-closure device (ACD)
Type of second stagePneumatically balanced
Second stage weight - (grams)200
Second stage diameter (cm)6.57
ControlsOne control, the MBS, adjusts both the venturi and the opening effort
Breathing resistanceUser adjustable
MouthpiecesSmaller Comfo-Bite™ mouthpiece with detachable silicone bridge
Front coverCo-molded w/ limited range to control purge flow rate
Front cover ringTwilight stainless steel
Exhaust teeredesigned for better bubble dispersion and easier exhalation
Lip shieldSupreme model only
Heat Exchanger for freezing resistanceYES
Hose type29" braided AquaFlex hose
Hydrodynamic openingsLateral
Overall work of breathing (WOB) scoresAvg. 0.65 joules/liter
Nitrox compatibleYes to 40% O2 when new, out of the box
Regulator bagIncluded
Auto Closure Device (ACD)
Unique over-balanced, diaphragm design results in superior performance at depth
2 HP ports and 4 MP ports are angled for optimum hose routing
Available in DIN connector
Compatible with up to 40% O2 right out of the box
Master Breathing System (MBS)
Pneumatically-balanced second stage results in smooth, easy breathing
Twilight stainless steel accent ring
The ergonomic exhaust tee channels the exhaust bubbles out of your field of vision.
The design also contributes to a reduction in exhalation effort

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