Reorder & Replacement
Oxygen Generator Filters & Replacement Kits
Every on-site oxygen generator depends on clean, dry compressed air. Gas Generation Solutions supplies the replacement filter elements and complete filter maintenance kits that keep your system delivering oxygen at spec. Tell us your model number and serial number, and we match the correct kit. No filter part numbers to look up.
Particulate, coalescing, carbon
Correct elements for your system
Purity clean filtration protects
System service life
Replacement filters and maintenance kits for your oxygen generator
This is the reorder page for owners of on-site oxygen generators. When it is time to change your filters, we supply the replacement filter elements and the complete filter maintenance kit that fits your system, so your generator keeps producing oxygen at the purity you rely on for aquaculture, ozone, wastewater, biogas, or process use.
You do not need to look up any filter part numbers. Send us your generator's model number and serial number, and we identify the correct particulate, coalescing, and activated carbon elements and ship the matching kit. Ordering the kit is usually more economical than buying elements one at a time, and it means every element in the filtration train is replaced together.
Filters are what protect your investment. The pressure swing adsorption media inside an oxygen generator is designed to run for 20 years or more, but only if the compressed air reaching it stays free of particulates, oil aerosols, and hydrocarbon vapor. On an oxygen system, keeping oil out of the gas stream matters for more than purity, which is why the coalescing and carbon stages are worth staying ahead of.
The filtration train on an on-site oxygen generator
Compressed air from your receiver passes through staged filters before it ever reaches the oxygen-producing media. Each stage removes a different contaminant, and each stage is replaced with the matching element in your kit.
Stage 1
Particulate filter
Catches solid particles, rust, and pipe scale carried in from the air receiver and piping, protecting the finer filters downstream.
Removes solids to roughly 1 micron
Stage 2
Coalescing filter
Merges fine oil aerosols and water mist into droplets that drain away, removing the liquid contamination that would foul the media and drift your purity.
Coalesces oil aerosols to roughly 0.01 micron
Stage 3
Activated carbon filter
Adsorbs the hydrocarbon vapor and oil odor that pass straight through the earlier stages as a gas. It sits last so the liquid load is already gone.
Adsorbs oil vapor and hydrocarbons
On an oxygen system this train does double duty. The coalescing and carbon stages keep oil aerosols and hydrocarbon vapor out of an oxygen-enriched stream, which matters for both purity and safe operation, so staying ahead of these two elements is worth the habit. Inside the generator there is further inlet filtration and a fail-safe output filter before oxygen leaves the system.
What a filter maintenance kit includes
An oxygen generator filter kit is built for your specific system, so the exact contents depend on your model and configuration. A typical filter maintenance kit for an on-site oxygen generator includes:
- Particulate element for the first-stage solids filter.
- Coalescing element for the oil-aerosol and moisture stage.
- Activated carbon element for the final hydrocarbon-vapor stage.
- Drain and seal parts where your system uses them, such as auto-drain components and element o-rings.
Ordering the complete kit is usually more economical than buying elements individually, and it keeps the whole filtration train on the same replacement cycle. If you only need a single element, we can supply that too. Either way, we match it to your system so you are not cross-referencing part numbers on your own.
When to replace oxygen generator filters
Many owners change their filter elements about once a year, but the right interval depends on your compressed air quality, your duty cycle, and the hours the system runs. A generator on a single shift in a clean plant loads its filters far more slowly than one running continuously behind a hard-working compressor. These are the signals worth watching:
Time in service
You have reached the replacement interval set for your system, or it has been about a year since the last change.
Rising pressure drop
A loaded element restricts flow. A climbing pressure drop across the filters means they are near the end of their life.
Purity drifting
If your built-in oxygen analyzer shows purity slipping, saturated filters passing oil or moisture can be the cause.
After a compressor event
Oil carryover or a moisture event on the air side can overload the filters early. Change them once the source is fixed.
Changing filters is straightforward. Leave about 3 to 4 feet of clearance in front of the generator so the elements can be reached, and keep a spare kit on the shelf so you are never waiting on a delivery to bring purity back in spec. Not sure of the interval for your system? Tell us how it runs and we will help you set one.
Oxygen generator filter questions
What filters does an on-site oxygen generator use?
Compressed air passes through a staged filtration train before it reaches the oxygen-producing media: a particulate filter for solids, a coalescing filter for oil aerosols and moisture, and an activated carbon filter for hydrocarbon vapor. Inside the generator there is further inlet filtration and a fail-safe output filter. Each stage uses a replaceable element that we can match to your system.
How often do oxygen generator filters need to be replaced?
Many owners replace their elements about once a year, but the correct interval depends on your compressed air quality, duty cycle, and run hours. Rising pressure drop across the filters, purity drift on your oxygen analyzer, or an oil carryover event from the compressor are all reasons to change them sooner. Tell us how your system runs and we can help you set a schedule.
Should I order individual elements or a complete filter kit?
A complete filter maintenance kit is usually more economical than buying elements one at a time, and it keeps the whole filtration train on the same replacement cycle. If you only need to replace a single element, we can supply that as well. We match either to your specific generator.
What do you need to know to send the right filter kit?
Tell us your generator's model number and serial number. That is enough for us to identify the correct particulate, coalescing, and carbon elements and ship the matching kit. You do not need to look up any filter part numbers.
Why does clean filtration matter so much on an oxygen generator?
The coalescing and carbon stages remove oil aerosols and hydrocarbon vapor, which you want out of an oxygen-enriched stream for both purity and safe operation. Keeping those two elements on schedule is the simplest way to protect the gas quality your process depends on.
Do your oxygen generators require an oil-free air compressor?
For most oxygen applications, no. A standard air compressor works because the staged filtration train removes oil aerosols and hydrocarbon vapor before the air reaches the oxygen-producing media, and keeping those elements on schedule is what protects the oxygen side. Oil-free air is generally only specified for oxygen used in human medical breathing applications. Veterinary oxygen does not require it. Tell us how the oxygen will be used and we will confirm what your system needs.
Do you supply filters for older Gas Generation Solutions oxygen systems?
Yes. Give us the model number and serial number from your generator and we will match the correct replacement filter elements and maintenance kit, including for older units. If you cannot find those numbers, contact us with a photo of the model plate and we will identify them.
Reorder Made Simple
Send us your system, we match the kit
Tell us your oxygen generator's model number and serial number, and we will match the correct filter elements or a complete filter maintenance kit and get them shipped. Not sure where to find them? Give us a call or send a photo of the model plate and we will identify it for you.