Hollis 212 DC-3 Balanced Regulator, DIN 240.3351.07 033188

Video: Hollis DC3 212 and 221 Balanced Regulators Video Review
Mfg Part #: 240.3351.07
  • For cylinders fitted with a DIN valve only (for cylinders fitted with a standard yoke valve order adapter below)
  • Nitrox compatible to 40% (the recreational limits of nitrox)
  • Over-balanced first stage achieves superior performance by increasing your air flow the deeper you go
  • Designed for extreme depths and cold water
  • "Diver Adjustable" Air flow
  • Pneumatically balanced second stage 
  • Easy grip controls even while wearing gloves
  • Orthodontic mouthpiece to alleviate jaw fatigue by easing bite needed to hold regulator
  • "Diver Adjustable" venturi to prevent unwanted free-flow
  • Environmentally sealed first stage provides greater reliability, less maintenance and higher performance

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High performance in a compact package.

212 Second Stage
Pneumatically balanced second stage
Patented Dynamic Adjustment once set automatically maintains inhalation effort throughout the dive by compensating for depth changes.

Patented Orthodontic Mouthpiece for comfort and reduced jaw fatigue
Easy grip controls for precise adjustment even while wearing gloves
Venturi Switch for simple Dive/Pre-Dive modes
Nitrox compatible to 40%
2 high pressure ports
4 low pressure ports
Yoke or DIN/300 bar

Built with the same quality as the DC1, without the swivel turret, the DC3 is the ideal 1st stage for double cylinder configuration as well as perfect for single cylinders.

DC3 1st Stage
High performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery under the most extreme conditions
Designed to withstand the rigorous CE standard for coldwater performance
Environmental sealing prevents internal corrosion, contaminants, and icing of the first stage

4 low pressure ports
1 high pressure port
Yoke or 300 Bar Din
Nitrox compatible to 40%

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