As a high-performance product designed for steam turbine hydraulic oil filtration, the filter element FAX-40X10-Z has become a standard filter element for key hydraulic equipment in power plants at home and abroad with its excellent particle interception ability, high-pressure impact resistance and long-term operation reliability. This article will comprehensively analyze the core value of the filter element from the aspects of technical characteristics, application scenarios and actual effects.

The filter element FAX-40X10-Z is specially used for power plant steam turbine hydraulic oil systems (such as speed control systems, bearing lubrication systems, etc.). The core function is to remove solid particles, colloidal sediments and trace moisture in the oil to ensure that the oil cleanliness meets the ISO 4406 standard (usually requires ≤NAS 7 level). Its design goals include:

- Protect precision hydraulic components (such as servo valves, cylinders, pump groups) to prevent the control accuracy from decreasing due to particle wear;

- Inhibit oil oxidation and deterioration, extend the oil change cycle, and reduce operation and maintenance costs;

- Improve system response speed and reduce action delays or fault shutdowns caused by oil blockage.

Technical features: Innovative structure and materials enable efficient filtration

1. Multi-layer gradient filtration design

filter element FAX-40X10-Z adopts a three-layer composite structure of glass fiber + resin impregnation layer + stainless steel skeleton:

- Outer layer: high-density glass fiber filter material, achieving β₅≥1000 (filtration efficiency of ≥5μm particles ≥99.9%);

- Middle layer: resin impregnated fiber layer, adsorbing 1-3μm fine particles and colloidal pollutants;

- Inner layer: 316L stainless steel support mesh, compressive strength ≥4MPa, resistant to high-frequency pressure shocks of hydraulic systems.

2. Adaptability to extreme working conditions

- Working pressure range: 0.2-35MPa (covering turbine start-up and shutdown and peak load conditions);

- Temperature resistance: -40℃~120℃, adapting to the low temperature environment and high temperature oil reflux of cold zone power plants;

- Burst pressure: ≥8MPa, in line with ISO 2941 anti-burst certification requirements.

3. Intelligent operation and maintenance support

- Pressure differential indicator interface: real-time monitoring of filter element blockage status, support remote alarm (default trigger threshold 0.35MPa);

- Dirt holding capacity: ≥12g (measured value), more than 50% higher than traditional filter elements;

- Replacement cycle: recommended replacement after 12,000 hours or when the oil contamination exceeds the standard.

Application areas

- Steam turbine speed control system: filter the oil circuit before the electro-hydraulic servo valve (EHSV) to avoid valve core jamming;

- Bearing lubrication oil circuit: intercept wear metal debris and protect thrust bearings and radial bearings;

- Hydraulic oil tank circulation loop: link with online moisture detector to realize real-time monitoring of oil status.

Maintenance recommendations

- Regular inspection: Use a particle counter to detect oil cleanliness every quarter;

- Abnormal handling: If the filter element pressure difference increases suddenly or the oil transparency decreases, the pollution source must be checked immediately;

- Storage conditions: Unopened filter elements must be stored away from light in an environment with humidity less than 60%, with a shelf life of 3 years.

The filter element FAX-40X10-Z provides an efficient pollutant control solution for the hydraulic system of power plant turbines through the deep integration of precision material science and hydraulic system engineering experience. Its long life and high pollution holding capacity not only reduce the operation and maintenance costs, but also conform to the development trend of intelligent and low-carbon power plants. It is recommended that users establish a predictive maintenance system based on oil condition monitoring in combination with the equipment manufacturer’s technical specifications to maximize the performance potential of the filter element.

By the way, we have been supplying spare parts for power plants around the world for 20 years, and we have rich experience and hope to be of service to you. Looking forward to hearing from you. My contact information is as follows:

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