///Hollis 500SE Second Stage for Scuba Divers

Hollis 500SE Second Stage for Scuba Divers

$349.95

This is the Hollis 500SE Second Stage for Scuba Divers.

Description

Hollis 500SE Second Stage for Scuba Divers

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SPECS::::

Easily disassembled without the use of tools and underwater if necessary.

Old School. New Tech. The new 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, we have perfected the original “lever-servo valve” we designed 35 years ago.

500SE Second Stage

  • The pneumatically balanced servo valve system
  • Patented Orthodontic Mouthpiece for comfort and reduced jaw fatigue
  • Easily disassembled without the use of tools and underwater if necessary
  • Left or right positioning – no upside down
  • Bolt snap tie-point

How it works

The 500SE’s pneumatically balanced servo-valve is actually a two-stage valve. Just a small sip through the mouthpiece opens the servo mechanism or control valve lever. Airflow from the servo valve creates a vacuum which immediately opens the main valve diaphragm allowing air to flow through the regulator to the mouthpiece. Instead of one small port to provide airflow from the first stage, the 500SE features porting around the entire main valve. With less restriction from the first stage, this allows maximum performance.

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