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Air/Oil Separator element P525191
Air Compressor Filter Elements replacement element
Air Compressor Filter Elements
P525191 is an industrial coalescing air oil separator element. As a leading brand in the global filtration industry, Donaldson designed this filter element specifically for high-power screw air…
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Verified specifications for confident selection.
Confirm installation requirements against the equipment manual or original documentation.
| Height | 603.2 mm |
|---|---|
| Inner diameter | 269.7 mm |
| Outer diameter | 212.9 mm |
| Weight | 9.79 kg |
| OEM / Cross Reference | 2009601, 2014830, 55B6,5826902,AS2218,OAS4210,GS19020,LAF3889 |
| Filtration Precision | 0.1μm |
P525191 is an industrial coalescing air oil separator element. As a leading brand in the global filtration industry, Donaldson designed this filter element specifically for high-power screw air compressors and industrial gas compression systems. It is mainly responsible for high-precision coalescence and interception of micron-sized lubricating oil mist in compressed air to ensure the delivery of high-quality, oil-free clean air.
Four Major Technical Highlights of the Product
1. Multi-Layer Coalescing Filtration Technology (Coalescing Media)
It adopts Donaldson's specially made continuous multi-layer high-density glass fiber. When compressed air containing a large amount of oil mist passes through, tiny oil droplets (0.1~1μm) will be captured and merged into large oil droplets, which sink to the bottom of the filter element under the action of gravity to achieve ultra-efficient liquid-gas separation.
2. Extremely Low Operating Resistance (Low Initial Pressure Drop)
The precisely optimized porosity of the filter media keeps the resistance (pressure drop) when compressed air passes through at an extremely low level (usually ≤ 0.02 MPa). This can significantly reduce the energy consumption of the air compressor and save a large amount of electricity costs for factory operation every year.
3. Strict Residual Oil Content Control
Under normal rated working conditions, the residual oil content of the compressed air after separation can be strictly controlled within 1 ~ 3 ppm. It can effectively protect the downstream precision filters, refrigerated dryers and gas-using terminals (such as spraying, pneumatic components, automatic production lines, etc.).
4. High-Strength Pressure-Resistant and Conductive Anti-Static Structure
The skeleton is made of corrosion-resistant, high-strength perforated metal mesh, which can withstand the airflow impact during the start-up and frequency conversion of the air compressor and prevent the filter element from deforming. Meanwhile, a reliable built-in metal conductive sheet prevents potential safety hazards caused by static electricity generated by high-speed friction between oil and gas.
Installation Notes
Stop the system and release pressure before removal. Confirm flow direction and sealing surfaces before installation.
Maintenance & Replacement
Pressure drop alarm (excessive pressure difference): When the pressure difference before and after the oil separator core reaches 0.08 ~ 0.1 MPa (0.8 ~ 1.0 bar), it indicates that the filter material is severely clogged by contaminants and must be replaced. Extended operation will lead to a sharp increase in energy consumption or even collapse of the filter element skeleton by airflow.
Before Ordering
Confirm medium, flow rate, pressure, temperature, connection and available installation space.
Cross Reference
Reference information associated with this product. Contact us if you need help confirming a cross-reference number.
Delivery Options
Shipping or service point pickup. Our team confirms the best arrangement based on destination, weight and lead time.
Confirmed Before Dispatch
After inquiry, we verify specifications, price and supply status before delivery.
Ongoing Support
For specification, installation or quality questions, keep the product and order information available when contacting us.
INQUIRYSend an inquiry for this product
Send your requirements for P525191 and our selection team will confirm compatibility, price and lead time.
Frequently Asked Questions
How do I confirm compatibility without a third-party brand reference?
Provide the product number, dimensions, connection details, operating conditions and equipment information. Our team will confirm the application.
Which dimensions should I measure?
Measure the overall height, outer diameter, inner diameter and thread or connection size. A photo or drawing helps confirm the replacement.
How do I choose the correct seal material?
Seal selection depends on the filtration media, operating temperature and chemical compatibility. We can confirm suitable options for your application.
Can you provide a product data sheet?
Yes. Send the product number and required specifications and we will provide the available data sheet and selection support.



