EXPEL - How it works

The compressed air enters the Head through the inlet port and is directed downwards between the Bowl and the Filter Assembly.

A quick release mechanism allows the Head and Bowl to be easily opened for cleaning purposes.

The Pressure Indicator warns the user when the filter is under pressure.

The incoming compressed air follows an engineered tortuous route and flows between the Filter Assembly and the inside wall of the Bowl through the Annulus.

As the compressed air moves downwards the Vanes force the air to move in opposing directions.



The zigzagging Vanes affect the flow and direction of the compressed air. By doing this multiple eddy current are created.

The eddy currents rotate at high speed and force the coalescence of the water, oil and particulates against the side wall of the Filter Assembly and the Bowl.

Circulating moisture (oil and water) and particulates are deposited through gravity and air speed at the base of the Bowl, into the “quiet zone”.

The water droplets, oil and particles in this “quiet zone” exit through the drain port while the partially filtered air continues upwards into the Umbrella Assembly or Unitary Vertical Body (UVB)

95% or separation (water, oil and particulates) takes place at this stage of the filtration process.

The Umbrella Assembly, Unitary Vertical Bodies (UVB), consists of two vertical parts that are sonically fused together.

Each half of the UVB consists of component parts that when fused together, create multiple overlapping umbrella-shaped chambers.

As the air is forced upwards any remaining water, oil and particulates are coalesced together forming droplets that fall through gravitational force downwards, into the “quiet zone” and out through the drain port.

The UVB is easily removed and cleaned as part of periodic maintenance, should it be necessary.

5% or separation (water, oil and particulates) takes place at this stage of the filtration process.

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