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I have no experience with modern systems but have studied it for a while. People who do use them regularly have told me that the standard regulators with an IP of approx. 140 psi are good to about thirty feet. Longer hoses result in a delay in the breath as the pressure sags and then builds back up.I've always been interested in how the ambient pressure things works with that system
Use the right breathing grade hose that will not shed debris. Anything less is asking for serious medical issues. Don't mess around.My air supply will be a tank so that's clean air but I'm still going to install a filter anyway. I got to thinking about debris peeling off of the inside of the air hose. Yuch! So I'll install a filter right at the splitter where my regulator attaches.
Inline filter will increase breathing resistance and more likely cause more problems. Use good hose in good condition.Yeah, I am using a breathing grade air supply hose but debris is still possible. I'd rather not have some chunk of crap foul by regulator so I'll use a filter.