InWay2Deep
Contributor
I use regular valves and put Green vindicator knobs on them, feel its $$ better spent.
Question Valve for 100% O2 Deco Bottle
- Thread starter arkstorm
- Start date
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broncobowsher
Contributor
One of those rebreather fires, I remember questioning the details. Back when there were good websites for that stuff.
They were having issues with the OPV leaking. Instead of checking the IP and finding the 1st stage had an IP creep issue and the OPV was actually working correctly, they removed the OPV. This let the IP creep with no escape. The plastic threads tore out and the friction of the threads tearing out in a pure O2 system lit it up. Yes it happened when the O2 was turned on. but it wasn't the valve itself that did it. Had to look at the details to find what really happened and not just "opened the O2 valve and the rebreather caught fire" of the headline.
They were having issues with the OPV leaking. Instead of checking the IP and finding the 1st stage had an IP creep issue and the OPV was actually working correctly, they removed the OPV. This let the IP creep with no escape. The plastic threads tore out and the friction of the threads tearing out in a pure O2 system lit it up. Yes it happened when the O2 was turned on. but it wasn't the valve itself that did it. Had to look at the details to find what really happened and not just "opened the O2 valve and the rebreather caught fire" of the headline.
Agro
Contributor
Never ever heard chrome is a problem for oxygen. Why should it be? Poseidon Xstreams are certified for 100% oxygen and are chrome plated all over. I don't believe the story "chrome is bad".
The ox valve is not lubricated? I can hardly believe that. Any O2 valve I know, any O2 regulator I know is lubricated. A non lubricated o-ring will not last very long in a 3'0000 psi valve, you add a failure point to your equipment.
Slowly opening, fine thread: A traditional valve will always open rather fast, no matter what kind of thread you have. You can try(!) to open the valve slowly, sometimes it works, sometimes it does not. If you want a slowly opening valve in every(!) situatiation you need a needle valve. No manufacturer produces needle valves for O2 diving cylinders. So this seems to be unneccessary.
The ox valve is not lubricated? I can hardly believe that. Any O2 valve I know, any O2 regulator I know is lubricated. A non lubricated o-ring will not last very long in a 3'0000 psi valve, you add a failure point to your equipment.
Slowly opening, fine thread: A traditional valve will always open rather fast, no matter what kind of thread you have. You can try(!) to open the valve slowly, sometimes it works, sometimes it does not. If you want a slowly opening valve in every(!) situatiation you need a needle valve. No manufacturer produces needle valves for O2 diving cylinders. So this seems to be unneccessary.
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