The process
A PSA oxygen generator uses a zeolite sieve that adsorbs nitrogen and lets oxygen through. Like nitrogen generation it needs clean, dry compressed air as its feed, and like nitrogen generation its output depends on the purity demanded: higher purity, lower flow from the same bed.
Where it is used
On-site oxygen is common where cylinders are expensive to move or where demand is steady: wastewater treatment, aquaculture, combustion support, cutting and welding, glass and metals processing, and medical or veterinary supply where local regulations allow. Our oxygen generator family covers PSA units in the industrial range, typically supplied for 220 V single phase or three phase depending on size.
| Selection input | Why it matters |
|---|---|
| Purity required | Sets the flow available from a given model |
| Flow at that purity | The real capacity figure, not the headline |
| Feed air quality | Sieve life depends on dry, oil-free air |
| Storage | Buffer tank sized for the process's peak draw |
| Site rules | Oxygen enrichment changes material and ventilation requirements |
Safety is part of the specification
- Materials - oxygen-compatible materials and clean assembly; oil and grease are not acceptable in an oxygen line.
- Ventilation - oxygen enrichment raises fire risk; the room needs airflow and no ignition sources.
- Labelling - pipework and outlets must be identifiable as oxygen.
- Monitoring - an analyser at the outlet, with alarms, is the equivalent of the nitrogen system's purity check.
Service
The sieve beds, valves and the feed air treatment carry the maintenance burden. Feed air that is wet or oily shortens sieve life dramatically, which is why the dryer and filters upstream are part of the generator's specification rather than a separate purchase.
Browse the range on the oxygen generator collection page.
Tell us the working pressure, flow and site conditions and we will propose a configuration. Contact OPPAIR.