Cavitation can be a common problem in hydraulic systems, including hydraulic pumps in construction machinery. Cavitation occurs when the pressure of a hydraulic fluid falls below its vapor pressure, causing air bubbles to form and collapse. This can lead to damage and reduced performance of hydraulic system components. Some countermeasures for cavitation of construction machinery hydraulic valves are introduced below: 1. Maintain proper fluid level: Make sure the hydraulic fluid level is within the recommended range. A low fluid level increases the chance of cavitation, so check the fluid level regularly and keep it at the proper level. 2. Use appropriate fluid: Select and use hydraulic oil suitable for the specific operating conditions and temperature of construction machinery. The fluid should have the proper viscosity and additives to resist cavitation. 3. Check the suction line: Regularly check and clean the suction line to remove any debris or contamination that may cause cavitation. A clear, unrestricted suction line helps maintain proper fluid flow and reduces the risk of cavitation. 4. Avoid Excessive Loads or Pressures: Operate construction machinery within recommended load and pressure limits. Excessive load or pressure increases the potential for cavitation in hydraulic systems, including valves. Monitor and adjust operating conditions accordingly. 5. Optimize system design: ensure that the hydraulic system is properly designed to minimize the risk of cavitation. This includes using the proper valve size, maintaining proper line size, and avoiding sharp bends or restrictions in hydraulic lines. 90-L-130-KA-1-NN-80-R-4-F1-F-03-GBA-32-32-24 90L130KA1NN80R4F1F03GBA323224 90L130-KA-1-NN-80-S-3-C8-F-04-GBA-38-38-28 90L130KA1NN80S3C8F04GBA383828 90-L-130-KA-1-NN-80-S-3-C8-F-04-GBA-38-38-28 90L130KA1NN80S3C8F04GBA383828 90-L-130-KA-1-NN-80-S-3-C8-H-03-GBA-38-38-24 90L130KA1NN80S3C8H03GBA383824 90-L-130-KA-1-NN-80-S-3-C8-H-04-GBA-35-35-24 90L130KA1NN80S3C8H04GBA353524 90L130-KA-1-NN-80-S-3-F1-F-03-GBA-35-35-24 90L130KA1NN80S3F1F03GBA353524 90-L-130-KA-1-NN-80-S-3-F1-F-03-GBA-35-35-24 90L130KA1NN80S3F1F03GBA353524 90L130-KA-1-NN-80-S-3-F1-H-00-GBA-26-26-24 90L130KA1NN80S3F1H00GBA262624 90-L-130-KA-1-NN-80-S-3-F1-H-00-GBA-26-26-24 90L130KA1NN80S3F1H00GBA262624 90L130-KA-2-AB-80-S-4-C8-F-04-GBA-42-42-24 90L130KA2AB80S4C8F04GBA424224 6. Install a pressure accumulator: The pressure accumulator helps dampen pressure fluctuations and reduces the risk of cavitation. They store and release hydraulic energy when needed, helping to maintain a steady pressure level and minimizing the potential for cavitation. 7. Install anti-cavitation devices: Consider installing anti-cavitation devices in the hydraulic system, such as anti-cavitation plates or orifice plates. These devices help manage fluid flow and prevent cavitation by controlling differential pressure. 8. Monitor Fluid Temperature: Monitor the temperature of the hydraulic fluid to ensure it remains within the recommended operating range. Fluid temperatures that are too high increase the potential for cavitation. If necessary, take appropriate cooling measures such as heat exchangers or cooling fans. 9. Regular maintenance: Follow the regular maintenance schedule of the hydraulic system. This includes checking and cleaning filters, checking and replacing worn parts, and ensuring proper lubrication. A well-maintained system is less prone to cavitation. 10. Consult Manufacturer's Guidelines: Consult the manufacturer's guidelines and recommendations for specific hydraulic pumps and construction machinery. They may provide specific instructions and precautions to prevent cavitation and ensure optimal performance. 11. Increase system pressure: Increasing system pressure helps to increase the pressure above the vapor pressure of the hydraulic oil, thereby reducing the risk of cavitation. However, it is important to ensure that system components, including valves, can safely handle higher pressures. 12. Improve Filtration: Make sure the hydraulic system has proper filtration to remove contaminants from the fluid. Contaminants can promote cavitation by creating localized pressure drops or blocking flow channels. Inspect and clean or replace filters regularly, as recommended by the manufacturer. 13. Check Valve Operation: Verify correct operation of hydraulic valves. Faulty valves, such as worn seals or stuck components, can cause a drop in pressure and lead to cavitation. Inspect and repair or replace any faulty valves as necessary. 14. Avoid excessive flow rates: Excessive flow rates in hydraulic systems can cause pressure drop and cavitation. Ensure flow rates are within acceptable limits by properly sizing hydraulic lines and components. Avoid sharp turns or restrictions that can cause turbulence and pressure fluctuations. 15. Balanced system design: ensure balanced hydraulic system design, evenly distribute fluid flow and pressure. Uneven flow distribution causes localized pressure drops and increases the risk of cavitation. Consider using flow dividers or flow control valves to balance flow in multiple hydraulic circuits. 90-L-130-KA-2-AB-80-S-4-C8-F-04-GBA-42-42-24 90L130KA2AB80S4C8F04GBA424224 90L130-KA-2-AB-80-S-4-C8-H-04-GBA-42-42-24 90L130KA2AB80S4C8H04GBA424224 90-L-130-KA-2-AB-80-S-4-C8-H-04-GBA-42-42-24 90L130KA2AB80S4C8H04GBA424224 90L130-KA-2-BB-80-R-3-F1-F-00-GBA-42-42-24 90L130KA2BB80R3F1F00GBA424224 90-L-130-KA-2-BB-80-R-3-F1-F-00-GBA-42-42-24 90L130KA2BB80R3F1F00GBA424224 90L130-KA-2-BB-80-S-3-C8-F-04-GBA-42-42-24 90L130KA2BB80S3C8F04GBA424224 90-L-130-KA-2-BB-80-S-3-C8-F-04-GBA-42-42-24 90L130KA2BB80S3C8F04GBA424224 90L130-KA-2-BB-80-S-4-C8-H-03-GBA-42-42-24 90L130KA2BB80S4C8H03GBA424224 90-L-130-KA-2-BB-80-S-4-C8-H-03-GBA-42-42-24 90L130KA2BB80S4C8H03GBA424224 90L130-KA-2-BC-80-R-3-F1-H-00-GBA-42-42-24 90L130KA2BC80R3F1H00GBA424224 16. Implement hydraulic buffering: Hydraulic buffering devices, such as shock absorbers or deceleration valves, can help absorb shock and reduce pressure fluctuations during high-speed movement or sudden load changes. This helps minimize the risk of valve cavitation. 17. Hydraulic system flushing: Periodically perform hydraulic system flushing to remove any accumulated debris, silt or contaminants that may cause cavitation. Flushing helps keep the system clean and ensures fluid flow. 18. Training and Operator Awareness: Provide machine operators with proper training on the importance of maintaining hydraulic system condition and recognizing signs of cavitation. Operators should be aware of recommended operating parameters, such as load limits, pressure limits, and temperature ranges, to minimize the risk of cavitation. Remember to consult the manufacturer's guidelines and recommendations for specific countermeasures tailored to your construction machinery and hydraulic system. They can provide detailed instructions and other measures to effectively resolve cavitation problems. Additionally, seeking the expertise of a hydraulics specialist or maintenance professional can help diagnose and resolve cavitation problems in complex hydraulic systems.