Hollis 500SE / DC7 Regulator

Hollis 500SE / DC7 Regulator

Brand: Hollis


500SE

Side Exhaust

The new 500SE utilises a servo controlled valve to provide precision airflow and unparalleled performance for both air and trimix divers in a side exhaust configuration. An overbalanced diaphragm first stage also provides ideal hose routing for both backmount and sidemount users and optimum performance at any depth.

The 500SE's pneumatically balanced servo-valve is a two-stage valve. Just a small sip through the mouthpiece opens the servo mechanism or control valve lever. Air flow from the servo valve creates a vacuum which opens the main valve diaphragm allowing air to flow through the regulator to the mouthpiece. Instead of one small port to provide air flow from the first stage, the 500SE features porting around the entire main valve to provide superior breathing performance.


500SE Second Stage

  • Patented Orthodontic Mouthpiece for comfort and reduced jaw fatigue
  • Standard with 30" maxflex hose
  • Easily disassembled without the use of tools and underwater if necessary
  • Left or right positioning - no upside down
  • Boltsnap tie point
DC7 First Stage
  • High performance over-balanced first stage provides progressively greater intermediate pressure as depth and gas density increases for superior gas delivery even in extreme conditions
  • Fixed hose routing ideal for both backmount and sidemount configuration
  • Environmental sealing prevents internal corrosion, contaminants, and icing of the first stage
  • Designed to withstand the rigorous CE standard for coldwater performance
  • Nitrox compatible to 40%
  • 2 High Pressure and 4 Low Pressure ports
  • DIN/300 bar