Thread Content
The main faults are poor performance and leakage, with the primary causes being condensed water, dust, rust in compressed air, inadequate lubrication, and poor quality of sealing rings. Methods for troubleshooting the cause of the fault: The valve cannot switch direction. 1. Poor lubrication, resulting in high sliding resistance and starting friction. 2. The sealing ring is compressed excessively or deforms due to expansion. 3. Dust or oil residues are stuck in the sliding parts or valve seats. 4. The spring is stuck or damaged. 5. The area of the control piston is too small, resulting in insufficient operating force. 1. Improve lubrication. 2. Appropriately reduce the compression amount of the sealing ring and improve the formula. 3. Remove dust or oil stains. 4. Reassemble or replace the spring. 5. Increase the piston area and operating force. Valve leakage 1. The compression amount of the sealing ring is too small or it is damaged. 2. The valve stem or seat is damaged. 3. The casting has shrinkage cavities. 1. Increase the compression amount appropriately, or replace the damaged seal. 2. Replace the valve stem or valve seat. 3. Replace the casting. Vibration of the valve 1. Low pressure (pilot type). 2. Low voltage (solenoid valve). 1. Increase the pilot operation pressure. 2. Increase the power supply voltage or change the coil parameters.