I did test the connections for my 3M Scott Elsa Hood setup (only without the gas bottle).
The bad first:
The hood is very tight on my neck. I have to use both hands and some force to put it on/remove it. Does that cause problem with CO2 not leaving much?
Especially I am not really sure the exhale valve is good.
Because I did block the other valve (the one to be connected to the gas bottle) and did breathe in /out heavily. So much that the hood did start to move (like a ballon, inflate/deflate).
But I could not feel any air out of the exhale valve (on its side openings)
When I remove the plastic "security" cover (that should be placed on) on the exhale valve, then i can feel some air go out, when breathing.
But this can't be a solution, because that "security" cover holds the valve and it would fall down. I had to hold it by my hand or I have a hole were I can breath in oxygen.
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Also it's after a few seconds not really comfortable having this hood on. Uncomfortable in a sense that the air is bad, it's getting slowly warmer and humid in the hood.
The CO2 anlyzer (when I wear the hood with the valve not connected to anything) shows over 9999. The worst measurable amount of co2 in the hood.
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The good though:
The rectus 95 ks female 1/4 (model 95KSIW13BPN) connects and is suitable with the din477 24,32 Nitrogen regulator. It works as well with the 3M Scott extension cable. that extension is connect on one side with the hood valve and the other end is connected with that rectus adapter. The rectus adapter is a suitable bridge between the 3M scott valve extension (that I use the extend my hood valve) and the nitrogen regulator.
Possible alternative to the 3M Scott Elsa Hood:
Chinese Fire Escape Hood TZL30???
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