Oxygen Generating Systems, Intl. (OGSI) manufactures aquaculture oxygen generators, large industrial oxygen generators, and on-site oxygen generators and systems, as well as oxygen bottles, emergency oxygen generators, and cylinder filling plants.OGSI's large industrial oxygen generators provide a cost effective alternative to bottled oxygen or liquid oxygen supplies. Our on-site oxygen generators are the most energy efficient plants on the market. Designed for applications that require outputs from 175 to 1000 SCFH (83 to 472 LPM). Our Large-Industrial line of Pressure Swing Adsorption (PSA) oxygen generators can deliver a constant flow of up to 93% (± 3%) oxygen at 45-60 psi.