It gives you the ease and flexibility of a hood with the protection of a positive pressure Demand Valve and mask. This high performance unit maintains positive pressure at all times with the ability to deliver air flows in excess of 500 lpm. Inside the hood is a nose cup and exhalation valve assembly which eliminates CO 2 build up. Air is supplied to the HDV from a Demand Valve. This eliminates constant air flow while maintaining positive pressure inside the hood.
Air is delivered only when it is needed, during inhalation.
This conserves air that would otherwise be wasted with traditional escape hoods. Eye glasses are no longer a concern because they do not interfere with the seal. Odd shaped faces and mask adjustments are no longer a concern because of the flexibility of the hood. HDV Offshore Express for offshore oil rigs to escape from H 2 S gas. View the HDV Datasheet Documentation sections are .pdf files.