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CONCOA Airco 9900 series Oxygen regulator 806 9931 Vintage NOS CGA 024 For Sale

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CONCOA Airco 9900 series Oxygen regulator 806 9931 Vintage NOS CGA 024:
$150.00

CONCOA Airco 9900 series Oxygen regulator 806 9931 Vintage NOS
Line Regulator CGA 024
I don't know much about this product but the guy at CONCOA said it's discontinued andthat someone in the business would know all about it.
If someone can tell me more about it so I can better inform buyers, please message me and thanks.
Manuals and box are in very poor condition.
As Pictured.

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CONCOA Airco 9900 series Oxygen regulator 806 9931 Vintage NOS CGA 024

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