When the plunger pump overflow valve has large vibration and noise, it indicates that there is a potential failure in the system. Here are some possible causes and troubleshooting steps to resolve this issue: 1. Pressure setting: Check whether the safety valve is set at an appropriate pressure level. If the pressure is set too low, it will cause the valve to open and close rapidly constantly, causing vibration and noise. Adjust the pressure setting within the recommended range specified by the manufacturer. 2. Safety valve failure: Check the safety valve itself for any internal failure or damage. Worn valves, damaged seals or debris left in the valve can cause erratic operation and lead to excessive vibration and noise. Clean or replace safety valve if necessary. 3. System overpressure: Check the hydraulic system to determine whether it is under overpressure. Excessive pressure will cause the safety valve to work continuously, resulting in vibration and noise. Determine the cause of overpressure, such as a pressure regulator failure or blockage in the flow path, and address accordingly. 4. Fluid contamination: Contaminants in the hydraulic oil can adversely affect the operation of the safety valve. Check for any contamination such as dust, debris or metal particles in the fluid or on the valve itself. If the hydraulic oil is contaminated, flush and replace the hydraulic oil, and clean the relief valve to ensure smooth operation. 5. Improper valve selection: verify whether the safety valve selection meets the flow and pressure requirements of the hydraulic system. If the valve is undersized, it may have difficulty handling fluid flow, causing excessive vibration and noise. Consult the manufacturer's guidelines or consult an expert to ensure the valve is sized properly for the system. 6. Installation and piping: Check the installation of safety valves and related piping. Loose or incorrect installation, as well as vibrations transmitted through the piping, can cause excessive noise and vibration. Make sure the valve is securely installed and the piping is adequately supported and free of restrictions or leaks. 90L130-KA-5-AB-80-S-3-C8-H-04-GBA-45-14-24 90L130KA5AB80S3C8H04GBA451424 90-L-130-KA-5-AB-80-S-3-C8-H-04-GBA-45-14-24 90L130KA5AB80S3C8H04GBA451424 90L130-KA-5-AB-80-S-3-C8-H-04-GBA-45-45-24 90L130KA5AB80S3C8H04GBA454524 90-L-130-KA-5-AB-80-S-3-C8-H-04-GBA-45-45-24 90L130KA5AB80S3C8H04GBA454524 90L130-KA-5-AB-80-S-3-F1-F-04-GBA-38-38-24 90L130KA5AB80S3F1F04GBA383824 90-L-130-KA-5-AB-80-S-3-F1-F-04-GBA-38-38-24 90L130KA5AB80S3F1F04GBA383824 90L130-KA-5-AB-80-S-4-C8-H-03-GBA-26-26-24 90L130KA5AB80S4C8H03GBA262624 90-L-130-KA-5-AB-80-S-4-C8-H-03-GBA-26-26-24 90L130KA5AB80S4C8H03GBA262624 90L130-KA-5-AB-80-S-4-C8-H-04-GBA-35-35-24 90L130KA5AB80S4C8H04GBA353524 90-L-130-KA-5-AB-80-S-4-C8-H-04-GBA-35-35-24 90L130KA5AB80S4C8H04GBA353524 7. Cavitation or Aeration: Cavitation and aeration can cause noise and vibration in hydraulic systems. Cavitation occurs when the pressure of a fluid is lower than its vapor pressure, causing bubbles to form and collapse. Aeration involves introducing air into the system. Check for any signs of cavitation or aeration, and address root causes such as low fluid levels, air leaks, or suction line failures. 8. System damping: Consider the damping characteristics of the hydraulic system. Insufficient damping, such as no accumulators or shock absorbers, amplifies vibrations and noise. Evaluate the damping requirements of the system and install appropriate damping elements to reduce vibration and noise levels. 9. Expert consultation: If the troubleshooting steps cannot determine the cause of the failure or the problem persists, it is recommended to seek help from a hydraulic system expert or manufacturer. They can provide further guidance and perform detailed diagnostics to pinpoint and resolve specific problems. 10. Excessive flow: Verify that the flow through the relief valve does not exceed its capacity. If the flow rate is too high, it will cause turbulence and pressure fluctuations, resulting in vibration and noise. Consider installing a flow control valve or adjusting the system's flow settings to ensure it is within the specified flow range of the relief valve. 11. Seat or seal problems: Check the seat surface and seals of the safety valve for damage, wear, or misalignment. If the valve is not seated properly or the seals are worn, leakage, turbulent flow and associated vibration and noise can result. Clean, repair or replace valve components as necessary. 12. Insufficient pipe support: Check whether the pipe connected to the safety valve is adequately supported and fixed. Vibration caused by unsecured or unsupported piping can be transmitted to the relief valve, causing increased vibration and noise. Install appropriate clamps or brackets to secure the piping and minimize vibration. 13. Hydraulic system resonance: considering the possibility of hydraulic system resonance, the natural frequency of the system is consistent with the working frequency. This can cause excessive vibration and noise. Consult a vibration analysis specialist or a hydraulics specialist to assess the system's resonant frequency and take appropriate action to mitigate the resonance, such as adding dampers or changing system components. 14. Oil temperature and viscosity: monitor the oil temperature and viscosity in the hydraulic system. Running the system at excessively high temperatures or with oil of the incorrect viscosity can affect safety valve performance and cause vibration and noise. Make sure the oil temperature is within the recommended range and the oil viscosity is within the manufacturer's specifications. 90L130-KA-5-AB-80-S-4-C8-H-04-GBA-42-42-24 90L130KA5AB80S4C8H04GBA424224 90-L-130-KA-5-AB-80-S-4-C8-H-04-GBA-42-42-24 90L130KA5AB80S4C8H04GBA424224 90-L-130-KA-5-AB-80-S-4-C8-H-04-GBA-45-45-24 90L130KA5AB80S4C8H04GBA454524 90L130-KA-5-AB-80-S-4-F1-F-04-GBA-45-45-24 90L130KA5AB80S4F1F04GBA454524 90-L-130-KA-5-AB-80-S-4-F1-F-04-GBA-45-45-24 90L130KA5AB80S4F1F04GBA454524 90L130-KA-5-AB-80-S-4-F1-F-06-GBA-26-26-24 90L130KA5AB80S4F1F06GBA262624 90-L-130-KA-5-AB-80-S-4-F1-F-06-GBA-26-26-24 90L130KA5AB80S4F1F06GBA262624 90L130-KA-5-AB-80-S-4-F1-H-03-GBA-42-42-24 90L130KA5AB80S4F1H03GBA424224 90-L-130-KA-5-AB-80-S-4-F1-H-03-GBA-42-42-24 90L130KA5AB80S4F1H03GBA424224 90L130-KA-5-BB-80-L-3-F1-H-03-GBA-35-35-24 90L130KA5BB80L3F1H03GBA353524 15. Excessive back pressure: Check whether the system back pressure is too large. High back pressure can deform the safety valve, causing it to operate under pressure and causing vibration and noise. Identify and correct sources of back pressure, such as clogged filters, restricted flow paths, or improperly set valves. 16. System inspection: System inspection of the entire hydraulic system, including other components and valves. Look for any anomalies such as leaks, damaged components, or misaligned parts that could be causing vibration and noise. Resolve these problems in a timely manner to restore the normal operation of the system. When troubleshooting hydraulic systems, it is important to exercise caution and follow proper safety procedures. If necessary, consult a hydraulic system specialist, maintenance professional, or manufacturer for guidance specific to your system configuration and requirements.