
Delivers 3-25μm precision filtration for hydraulic oil/glycol in power plants. Withstands 21-210bar pressure, ensures system stability and equipment longevity.


As a leading provider of industrial filtration solutions, Ayater is committed to delivering high-reliability filter assemblies that meet the rigorous demands of critical industrial applications. The 9021 Series Hydraulic Filter Assemblies are specifically engineered for power plant hydraulic systems, including hydrogen-oil-water systems, top shaft oil systems, and seal oil systems, which are vital for the safe and efficient operation of power generation equipment.
High-Precision Filtration Media:
Equipped with optimized microglass or metal mesh filter media, the 9021 Series achieves filtration precision ranging from 3μm to 25μm. The microglass media features a gradient density structure that enhances dirt-holding capacity, effectively trapping even sub-micron particles while minimizing pressure drop.


Exceptional Pressure & Temperature Resistance:
Designed to operate under extreme conditions, the filter assemblies can withstand working pressures from 21bar to 210bar and operating temperatures between 80°C and 110°C. The maximum collapse pressure reaches 3050 psid, ensuring structural integrity even under complete clogging conditions.
Easy Installation & Maintenance:
he filter assemblies feature a compact design that allows for easy integration into existing hydraulic systems. The quick-release clamps and inspection ports facilitate convenient filter replacement and condition monitoring, reducing maintenance time and labor costs.

|
Parameter |
Value |
Description |
|---|---|---|
|
Model Series |
9021 Series (HC9021FDP4Z, HC9021FDT8H, HC9021FKP8Z) |
Power plant hydraulic filter assemblies |
|
Filtration Precision |
3μm, 8μm, 25μm |
Beta rating βX(c)≥100 (3μm), β25=1000 per ISO 16889 (25μm) |
|
Filter Media |
Microglass, Metal Mesh |
High dirt-holding capacity, chemical resistance |
|
Working Pressure |
21-210bar |
Suitable for high-pressure hydraulic systems |
|
Operating Temperature |
80-110°C (250°F max for HC9021FDT8H) |
Withstands high-temperature operating environments |
|
Collapse Pressure |
3050 psid |
Ensures structural stability under extreme pressure |
|
Gasket Material |
Viton |
Excellent sealing performance and chemical resistance |
|
Dimensions (HC9021FDT8H) |
1.76″ OD x 0.98″ ID x 8.26″ Length |
Compact design for easy installation |
|
Filtering Ratio |
βX(c)≥100, β25=1000 |
Meets ISO 16889 multi-pass testing standards |

The 9021 Series Hydraulic Filter Assemblies are widely used in power plants, including thermal power plants, hydropower plants, and nuclear power plants. They are suitable for installation in suction lines, pressure lines, return lines, and bypass lines of hydraulic systems, as well as independent filtration systems. Specific applications include:
Hydrogen-oil-water systems in generators
Top shaft oil systems for turbine units
Seal oil systems for generator rotors
Stator cooling water systems
Oil purification and regeneration systems
By effectively removing contaminants from hydraulic fluids, the 9021 Series Filter Assemblies help extend the service life of power plant equipment, reduce maintenance costs, and ensure the stable and safe operation of power generation systems.
For more information on the 9021 Series Filter Assemblies or to purchase similar models, please contact Ayater (卅亚过滤) directly. Our team of technical experts will provide you with customized filtration solutions to meet your specific application needs.
Similar models available: HC9020FKS4Z, HC9020FKS8Z, HC7500SK78H, HC9600FKP13Z, HC9600FKP8Z, LY-38/25W
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