Gone for diving
Contributor
As to using a supply hose within a corrugated hose and the demand diaphragm in the mouthpiece and then using the corrugated hose for exhaust, well, talk about case fault geometry! It was an interesting foot note to history that found no purchase in the world of scuba.
Double Hose Regulators - Demone
www.cg-45.com
I assume it free flowed to easy?