The higher the outlet stress, the longer the distance the oxygen compressor can adequately drive oxygen into the client. Rating initial for oxygen outlet pressure would be the Zen-O at 25 psi. The iGo is 2nd at fifteen psi. The DeVilbiss Oxygen Concentrator is meant to be used being an https://allhealthmarket.com/product/medical-supplies/portable-oxygen-concentrator-generator/oxygen-concentrator-machine-camping-use-oxygenator-driving-oxygen-bar-with-24-hours-battery-lasting-oxygen/