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The Hollis Gear 221 DC3 regulator set up if for those divers who want to get superb breathing and performance from their regulators, but want to keep everything simple.
The DC3 first stage is built with the same quality as the DC1 but does not have the swivel turret. It is an ideal 1st stage for either a double or single cylinder configuration.
The 221 second stage uses the same technology as the 212, but sticking to the keep it simple principle does not have the dynamic adjustment knob.
Other features of the DC3 221 are:
DC3 first stage:
- Over balanced first stage provides superior performance at greater depths.
- Environmental seal prevents corrosion, icing and contamination if the internal parts.
- Designed to withstand the rigorous CE standard for cold water performance.
- Nitrox compatible for up to 40%.
- 1 high pressure port, 4 low pressure ports.
221 Second stage:
- Pneumatically balanced second stage.
- Patented orthodontic mouthpiece.
- Ergonomic A.V.S (Adjustable Venturi System) dive/pre-dive switch.