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> Oxygen Deco Regulator by Hollis

Certified for 100% oxygen service thanks to highly specialized component materials and manufacturing processes, the Hollis Oxygen regulator is the perfect choice for a deco regulator setup. It exceeds CE performance standards and is assembled in a clean room environment. The HO2 first stage is composed of marine brass, and has no internal chrome plating which has been shown to contribute to flash combustion. The HP seat is composed of Dyneon, a tradename of 3M, which has exceptional heat and chemical resistance, and doesn't support combustion. The HO2 has an indestructible unbalanced piston design and comes standard with a 300 BAR/4500 PSI DIN connection and 40-inch regulator hose. The 210 second stage has a patented orthodontic mouthpiece for maximum comfort on a long deco.

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Hollis DC4/221 Deco Regulator

Similar to the high performance DC3 first stage but without the environmental seal, the compact DC4 first stage has four fixed-position low-pressure standard 3/8-inch UNF ports and a high-pressure standard 7/16-inch UNF port well aligned for use as deco regulator. The 221 second stage offers venturi assisted breathing, dive/predive switch to eliminate free flow, as well as an orthodontic mouthpiece for comfort and reduced jaw fatigue. Put this all together and you have a decompression regulator that is compact, high performance and a good value.

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321 Balanced 2nd Stage Octopus, w/36-Inch Yellow Hose

The 321 Octopus second stage is designed on the same platform as the high performance 221 pneumatically balanced second stage. Comes standard with a high visibility yellow front cover and a 36-inch yellow hose. The 321 second stage has an orthodontic mouthpiece with high-density bite tabs for comfort, as well as an adjustable dive/pre-dive switch.