Biomarine BioPak 60TE Rebreather: one-hour closed-circuit, self-contained breathing apparatus

BioPak 240 Revolution
One Hour SCBA
Principles of Operation
Four Hour SCBA
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The BioPak 60TE Rebreather re circulates the user's exhaled gas. A small oxygen cylinder provides make-up gas to a breathing chamber. The user inhales the gas into a face piece. The user's exhaled breath passes through a carbon dioxide absorbent and back into the breathing chamber, where fresh oxygen is added. The replenished gas is now available for the next inhalation.

A spring-loaded diaphragm in the breathing chamber maintains the positive pressure in the system. If the user's inhalation fully depletes the breathing chamber, a demand, free-flow valve automatically supplies the additional oxygen required.

If the user's exhalation causes the diaphragm to fully expand, excess gas is vented out of the relief valve. A loud, high-pitched, pressure activated whistle alarm sounds when approximately 20-25% of the service life remains. A manual bypass is provided to override the supply system in an emergency.

Ease of Maintenance
User maintenance requirements are minimized. Most repairs and testing can be done in the field.

Illustration of BioPak 60TE - Dimensions:
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Side view/cutaway illustration
of BioPak 60TE: Callouts
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