Compressed air preparation
Compressed air never leaves the compressor clean. It carries water from the ambient air drawn in, dust, rust and scale particles from the pipework, plus oil and oxidation residues from the compression stage. ewo compressed air preparation brings that air to the quality your tools, valves and processes actually need – from a simple workshop outlet to oil-free air for food production.
Why compressed air has to be treated
Contaminated compressed air is the most common cause of failures in pneumatic systems. Condensate corrodes cylinders and valves and washes out lubricating films. Solid particles act like an abrasive on seals and control edges. Oil residues gum up check valves and ruin paint finishes. Properly sized air preparation costs a fraction of a production stoppage – and it noticeably extends the service life of every downstream component.
How a treatment train is built up
A typical train starts with the compressed air filter, which separates condensate and solids. Behind it sits the pressure regulator, reducing mains pressure to the required working pressure and holding it constant. Where tools need lubrication, a lubricator follows. These three stages are available individually or pre-assembled as a service unit. For higher purity classes, micro filters extend the train; condensate drain valves take care of the accumulated liquid.
Finding the right series
| Series | Short profile |
|---|---|
| airclean | Filter stages for high purity requirements, up to oil-free air. |
| vma | Modular treatment for larger flow rates and industrial ring mains. |
| combibloc | Compact combination units, filter and regulator in one housing. |
| airvision | Treatment with digital display and monitoring. |
| standard | The broad basic range from G ⅛ to G 2, also in 40 bar and 60 bar versions. |
| variobloc | Modular system for freely combinable service units. |
| stainless steel | Stainless steel versions for food, pharmaceutical and chemical environments. |
| Condensate drain valves | Drain valves matched to the condensate volume, from manual to fully automatic. |
Typical applications
- Workshop and assembly stations with pneumatic tools
- Painting and coating lines with high demands on oil-free air
- Pneumatic controls in machine and plant engineering
- Packaging and filling lines in the food industry
- Ring mains and distribution networks in production halls
- Test benches and measuring equipment with defined air quality
Your benefits with us
- Worldwide shipping of all compressed air components and service units
- Large stock levels for many products – current lead time available on request
- Spare parts and service kits available
- Fast shipping via UPS (parcel) or freight forwarder (pallets), express delivery available on request
- Extensive hands-on application know-how
- Personal advice on selecting the right component
- Resellers receive volume-based discounts on request
- Large companies, public authorities and government agencies can order on account (request via our contact form)
Frequently asked questions
Which filter grade do I need?
For general workshop air and pneumatic tools, 40 µm is the usual starting point. For sensitive controls and painting applications, micro filters of 5 µm or finer are installed downstream. Filter stages are combined in series, not replaced.
In which order are the devices installed?
Always filter, then regulator, then lubricator – seen in the direction of flow. The filter protects the regulator from particles, and the lubricator sits last so that the oil is not filtered out again immediately.
Is a manual drain valve sufficient?
With low condensate volumes and regular checks, yes. Where nobody attends the device daily or a lot of condensate accumulates, a semi-automatic or automatic drain valve is the safe choice – a full bowl carries the separated liquid back into the air.
Plastic or metal bowl?
Plastic is lighter and allows a visual check of the fill level. Metal bowls are mandatory wherever solvents, high temperatures or mechanical damage are involved.
