Hollis DC7 / 500SE Regulator

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  • $1,029.00
  • Regular price $1,149.00
Tax included.


The 500SE utilizes a servo controlled valve to provide precision airflow and unparalleled performance for both air and trimix divers in a side exhaust configuration. To achieve this, Hollis have perfected the original "lever-servo valve"  designed 35 years ago. Overbalanced diaphragm first stage also provides ideal hose routing for both backmount and sidemount users and optimum performance regardless of depth.


500SE Second Stage

  • Pneumatically balanced servo valve system
  • 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 under the most 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