The filtration process follows a progressive multi-stage approach:
Stage 1 – Centrifugal & Inertial Separation
Compressed air enters the filter housing and passes through a centrifugal separation section. Larger liquid droplets and solid particles (20-50 μm and above) are separated by inertia and gravity, falling to the bottom for automatic drainage.
Stage 2 – Coarse Filtration
Air then passes through a coarse filter layer that removes particles larger than 5 μm, protecting the precision coalescing stage from premature loading.
Stage 3 – Precision Coalescing
The air enters the high-efficiency coalescing element. As it passes through ultra-fine borosilicate micro-fiberglass media, sub-micron oil and water aerosols collide and merge (coalesce) into larger droplets. These droplets grow in size until gravity pulls them to the bottom of the housing.
Stage 4 – Drainage
Collected liquids are discharged through an automatic or manual drain, while clean, dry air exits the filter for downstream use.
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Filtration Accuracy | 0.01 μm to 0.1 μm |
| Residual Oil Content | ≤0.01 mg/m³ to ≤0.001 mg/m³ (grade dependent) |
| Working Pressure | 0.6 – 1.0 MPa (customizable 1.0 – 3.0 MPa) |
| Maximum Inlet Temperature | ≤50°C |
| Initial Pressure Drop | ≤0.02 MPa (dry condition) |
| Particle Removal Efficiency | 99.999+% at 0.01 μm |
| Housing Material | Stainless steel 304/316L, carbon steel, or resin (optional) |
