| Re: Passive Scr Superiority? Quote: (Originally Posted by Mike)  One way valve in the bellows? Only on the small bellow which is the one that is doing the SCR work - forces a fraction of gas out from the loop per breath.
__________________ "...after a while you get bored offering advice to a bull that like to keep butting the fence with its head rather than walking through the open gate..." - Rebreather World PM |