MTV vs non-rebreather
- Thread starter divemed06
- Start date
Please register or login
Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.
Benefits of registering include
- Ability to post and comment on topics and discussions.
- A Free photo gallery to share your dive photos with the world.
- You can make this box go away
The MTV is also a demand valve (like a scuba reg) and will provide 100% O2 with no waste.
A non-rebreather mask can provide nearly 100% O2, but it wastes a lot of gas doing it. You have to crank the flow rate up to 15lpm or so to get near 100%, and its flowing even when you're not inhaling, which is pretty wasteful.
The Ventilator trigger is for positive-pressure ventilation. This is not a safe thing to use without specialized training, as you can end up inflating the stomach (even with the overpressure protection which theoretically prevents barotrauma - theoretically) and that can cause serious trouble - including regurgitation of the stomach contents which in an unconscious person can be FATAL.
If you don't have any use for the ventilation function, DAN has a demand valve without the trigger button on it for less money. It is otherwise identical.
On my boat I have a reg that can feed both a demand valve AND a non-rebreather mask at the same time. The demand valve is the preferred thing for a conscious, breathing victim, but if you end up with TWO victims set up this way you can still give them both O2.
A non-rebreather mask can provide nearly 100% O2, but it wastes a lot of gas doing it. You have to crank the flow rate up to 15lpm or so to get near 100%, and its flowing even when you're not inhaling, which is pretty wasteful.
The Ventilator trigger is for positive-pressure ventilation. This is not a safe thing to use without specialized training, as you can end up inflating the stomach (even with the overpressure protection which theoretically prevents barotrauma - theoretically) and that can cause serious trouble - including regurgitation of the stomach contents which in an unconscious person can be FATAL.
If you don't have any use for the ventilation function, DAN has a demand valve without the trigger button on it for less money. It is otherwise identical.
On my boat I have a reg that can feed both a demand valve AND a non-rebreather mask at the same time. The demand valve is the preferred thing for a conscious, breathing victim, but if you end up with TWO victims set up this way you can still give them both O2.
Similar threads
