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Hollis 221 DC-3 Regulator -Features and Specifications

221 Second Stage
  • Pneumatically balanced second stage
  • Ergonomic A.V.S. (Adjustable Venturi System) Dive/Pre-Dive Switch
  • Patented Orthodontic Mouthpiece with High Density Bite Tabs
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%