Cave diving the Topgun
The Topgun rebreather is a fully closed circuit, manual control mixed gas rebreather. There are 3 development units which have been dived extensively for the past 5 years, from the wrecks of Sydney Australia to the caves of North Florida, to the Andrea Doria.
The unit is now available for purchase, by application, to qualifying divers. Minimum prerequisite is trimix diver , with significant trimix/heliox diving experience. Commercial and military diving experience considered.
$4500
| Duration | 5-8 hours |
| Max depth | 400ft recommended max. |
| Cylinders | User configurable will accept up to 2 x 20ltr tanks |
| Automatic oxygen addition | No |
| Integrated deco computer | No |
| Gas switching capability | Built in |
| Redundancy | To open circuit, 5 hour manual semi-closed bailout loop available |
| Gas mix | Heliox recommended for all depths below 80 fsw |
| PO2 display | 3x LCD voltmeters, no software involvement |
| PO2 sensors | 3x Teledyne R22 sensors, 10mV output in air |
| PO2 calibration | Via sealed 25 turn potentiometers |
| Mouthpiece | Closed circuit only, Interspiro check valves |
| Gas connections | All standard SCUBA low pressure inflator hoses |
| Automatic diluent addition | No |
| Breathing Bags | Highly puncture resistant, 45psi working pressure |
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