Rebreather World - View Single Post - Idea for mitigating solenoid-failure: open...

undrh2o · 26th April 2006, 18:42

I was thinking about this the other day too - but I came up with a different idea. It doesn't solve the stuck off problem - but you can manually add O2 for that, but it should solve the stuck on. Why not two solenoids one after the other? If one sticks open the other is there to stop the flow.

Of course to fix the stuck off problem two gas paths with redundant solenoids (4 total) could be used. Feedback to the controller that no gas is flowing could give an alarm too in a stuck off situation.

My appologies if this has been done.

26th April 2006, 18:42	#6 (permalink)
undrh2o Chris Miller Current Rebreather/s: Other CCR Dolphin Home Build Other Rebreather/s: Inspiration Classic Other CCR Dolphin Home Build Join Date: Apr 2006 Location: Ottawa, Canada Posts: 199	Re: Idea for mitigating solenoid-failure: open... I was thinking about this the other day too - but I came up with a different idea. It doesn't solve the stuck off problem - but you can manually add O2 for that, but it should solve the stuck on. Why not two solenoids one after the other? If one sticks open the other is there to stop the flow. Of course to fix the stuck off problem two gas paths with redundant solenoids (4 total) could be used. Feedback to the controller that no gas is flowing could give an alarm too in a stuck off situation. My appologies if this has been done.
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