Air Dryers
Point-of-Use Air Dryer
The ENHUI TECH Point-of-Use Air Dryer removes liquid water and contaminants from compressed air near the equipment inlet. Using centrifugal separation and an internal filtration chamber, it provides efficient moisture protection without electricity or conventional replaceable filter elements. It is suitable for CNC machines, automation equipment, pneumatic valves, cylinders, air tools, and other industrial applications.
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- Patented Technology & CE Certified
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- No Filter Element Required
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- Power-Free Operation
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- Maintenance-Friendly Design
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- Long Operating Life
Our point of use air dryer uses a spiral centrifugal separation structure.
Compressed air is guided into a high-speed rotating airflow, allowing liquid water and larger contaminants to be separated by centrifugal force.
The pre-treated air then passes through an internal filtration chamber for further separation before being supplied to downstream equipment.
How It Works
Step 1 — Spiral Acceleration
Compressed air enters through the inlet and passes through the spiral grooves, creating a high-speed rotating airflow.
Step 2 — Centrifugal Separation
Liquid water and heavier contaminants are thrown toward the inner wall and separated from the airflow.
Step 3 — Secondary Treatment
The air flows upward into the internal filtration chamber, where remaining moisture and fine contaminants are further separated.
Step 4 — Collection and Drainage
Separated water and contaminants flow into the collection chamber and are discharged through the drain connection.
Core Advantages
1. No Electricity Required
Operates using the energy of the compressed airflow, with no external electrical power required.
2. No Conventional Filter Element
The internal separation structure does not rely on PP cotton, activated carbon or other conventional consumable filter media.
3. Reduced Maintenance
No regular filter element replacement is required, helping reduce routine maintenance work and consumable costs.
4. High Separation Efficiency
The two-stage separation design combines centrifugal separation with secondary treatment inside the filtration chamber, achieving a separation efficiency of up to 99.99%.
5. Long Service Life
The simple, durable structure and non-consumable design provide a service life of up to 20 years under proper operating and maintenance conditions.
6. Simple and Durable Structure
A compact internal structure with fewer components supports long-term and stable operation.
Typical Applications
- CNC Machines
- Coordinate Measuring Machines (CMM)
- Medical Equipment
- Food Processing Equipment
- Coating Equipment
- Laser Equipment
Recommended Installation Setups
Without upstream air treatment, the point of use air dryer provides integrated filtration, drying, and the separation of oil and water from compressed air.
When a central air dryer is already in place, the point-of-use air dryer provides additional liquid water separation and filtration at the equipment inlet.
The Point-of-Use Air Dryer can be used as a standalone oil-water separator or filter unit, and can also be installed upstream of the dryer to improve drying performance.
For high-flow applications, a high-flow Point-of-Use Air Dryer can be used as primary treatment to remove large volumes of liquid water or contaminants, with a Point-of-Use Air Dryer installed before the point-of-use to ensure the delivered air is dry and clean.
Model selection depends on airflow, working pressure, humidity conditions, installation space and application requirements. Different systems may require different configurations. Contact us for technical recommendations and solution support.
Specifications
Model No. | ZH-1000 | ZH-2000 | ZH-3000 | ZH-5000 | ZH-18000 |
Port Size（Rc) | 3/8 | 1/2 | 3/4 | 1" | 2" |
Rated Flow | 1000L/min | 2000L/min | 3000L/min | 5000L/min | 18000L/min |
Working Fluid | Air | Air | Air | Air | Air |
Working Temperature | -5~65℃(Freeze-free) | -5~65℃(Freeze-free) | -5~65℃(Freeze-free) | -5~65℃(Freeze-free) | -5~65℃(Freeze-free) |
Proof Pressure | 1.6MPa | 1.6MPa | 1.6MPa | 1.6MPa | 1.6MPa |
Working Pressure Range | 0.1~0.99MPa | 0.1~0.99MPa | 0.1~0.99MPa | 0.1~0.99MPa | 0.1~1.5MPa |
Filtration Accuracy | 1μm | 2μm | 3μm | 5μm | 5μm |
Air Purity Standard | ISO8573-1:2010 | ISO8573-1:2010 | ISO8573-1:2010 | ISO8573-1:2010 | ISO8573-1:2010 |
Bowl Material | Forged aluminum alloy | Forged aluminum alloy | Forged aluminum alloy | Forged aluminum alloy | Forged aluminum alloy |
Filtration Efficiency | 99.999% | 99.99% | 99.99% | 99.99% | 99.99% |
Net Weight | 1.6kg | 1.8kg | 2kg | 3.2kg | 10kg |
Dimensions (Dia. × H) | 81*297mm | 81*310mm | 81*317mm | 106×450mm | 178×590mm |
Installation Guidelines
1. Vertical Installation Recommended
Install the unit vertically to ensure stable drainage performance and proper moisture separation.
2. Install Near the Equipment Side
For optimal performance, install the POU air dryer before the pneumatic equipment.
Long pipelines may generate secondary condensation due to temperature differences inside the air system.
3. Maintain Sufficient Piping Distance
A piping distance of approximately 100 meters or more from the air compressor is recommended to improve cooling and condensate separation efficiency.
4. Confirm Airflow Direction
Please verify the inlet and outlet ports before installation to ensure correct airflow direction.
5. Additional Cooling for Systems Without Central Dryers
If no central air dryer is installed, additional cooling of the air line before the POU air dryer may help improve moisture removal performance.
If no specific pressure dew point is required and the only requirement is that no visible liquid water be present, a refrigerated air dryer may not be necessary. In this case, the distance from the air receiver to the installation point of the air dryer should be at least 50 meters, allowing the compressed air to cool naturally in the pipeline. If the available distance is insufficient, a coiled air hose may be used as an alternative.
If you have any questions about installation or configuration, please contact us for support.