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AVOX 803139-01-03 Pressur Vak II™ - Medium Long Face Seal without 1st Stage Regulator Assembly without Microphone

SKU: 803139-01-03 Rate this product


Availability: 6 In Stock. Usually ships in 4 weeks if not in stock.

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  • Quick disconnect face seal allows easy cleaning
  • Full head harness for added comfort during long administration
  • Exhausts exhaled gases over board, permitting minimum ventilation of the chamber
  • Demand Regulator permits constant flow operation
  • Demand Regulator designed to operate with constant inlet pressure of 65 to 125 PSI over chamber pressure


  • Weight: 4.4 lbs.

Pressur Vak II™ - Medium Long Face Seal without 1st Stage Regulator Assembly without Microphone - P/N: 803139-01-03 Includes:

  • (1) Oxygen Cleaned Quick Disconnect Socket - P/N: 18969-00
  • (1) Exhaust Quick Disconnect Socket - P/N: 59853-00
  • (1) AVOX User Manual - P/N: 803139-UM




The AVOX 803139-01-03 Pressur Vak II™ is designed to administer oxygen or gas mixtures to a diver or patient in a hyperbaric chamber environment. The demand regulator assembly provides breathing gas on demand (inhalation). The regulator is designed to operate with a constant inlet pressure of 65 to 125 psig over chamber pressure.

For chamber depths over 60 FSW, a secondary vacuum regulator must be installed. It is recommended to use a negative spring biased back pressure differential regulator, such as the Tescom Regulator 26-2912-282A. A hull-stop valve should be an integral part of the system as a safety device to shut down the vacuum should a pressure loss occur. The vacuum regulator allows the exhaled gases to be carried to the outside of the chamber thereby eliminating oxygen buildup or contamination of the chamber environment. The vacuum of the exhaled gas is a direct function of the differential pressure of the chamber and the ambient environment.

The AVOX 803139-01-03 Pressur Vak II™ comes complete with Medium Long Face Seal with Standard Strap Assembly, Dual Demand and Exhaust Hose Assembly with Quick Disconnects, Demand Regulator Assembly and Exhaust Regulator Assembly.

Warning: The Pressur Vak II™ is designed for surface decompression in a recompression chamber and is not intended for underwater use. It may also be used for other applications which require overboard discharge of exhaled gas.


Product FAQ's

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  • Does the 803139-01-02 Pressur-Vak II BIBS Mask have any test certs confirming it is suitable for use in a saturation chamber rated to 300 MSW
    No. The Avox Pressur-Vak II BIBS Mask is not intended for use in a saturation diving system. Amron's 350M and 450M BIBS Masks are designed for use inside a saturation diving system and have been tested to Norsok U-101 breathing standard and performance tested by Nui and validated by DNV.
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  • Is the Pressur-Vak II BIBS mask DNV approved?


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  • Can the AVOX Oxygen Mask hoses and diaphragms be cleaned using a sterilizing machine? The sterilizing machine operates at 212°F (100°C).

    The AVOX Oxygen Mask was not designed to be cleaned by a sterilizing machine. We recommend using SaniZide-Plus to disinfect your AVOX Inhalator. You can also clean all metal and non-metal parts with nonionic detergent such as “Ivory Liquid” and warm water (110 °F maximum). Rinse with clear water and dry completely before storing or using. 

    The information provided should be used as a guideline only. Every company should have their own procedures in place for cleaning and/or disinfecting safety equipment used in oxygen and breathing environments.

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  • Are the hose connections on the Amron BIBS mask the same as the Avox hose connections?

    Yes, both the Amron and Avox BIBS Mask connect to same Hansen quick disconnects.  Amron part number 59853-00 for the exhaust quick disconnect and 18969-00 for the oxygen inlet. 

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  • What does BIBS stand for?

    Built-in Breathing System 

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  • How often should I clean my BIBS Mask Hose Assembly?
    The frequency of cleaning will vary based on the hours of use. Typically the hoses should be internally cleaned at least every 6 months. They can be cleaned with SaniZide or soap & warm water, rinsed with water, and dried. Some facilities require them to be cleaned to a specific O2 cleaning standard.
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  • What is the temperature rating for the plastic used to make the 803100-01 Manifold Assembly?
    The polycarbonate which this manifold assembly is manufactured from can withstand temperatures down to -22ºF (-30ºC).
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