A: Typical signs include slow boom or arm movement, unstable hydraulic operation, oil leakage, abnormal actuator response, and poor coordination between excavator functions.
A: Confirm the valve part number, hydraulic port connections, mounting position, spool configuration, and hydraulic oil cleanliness to ensure correct installation and stable operation.
A: Check the original valve number, excavator model, hydraulic system specifications, and existing control valve information before purchasing. Accurate matching helps avoid installation problems.
A: Designed for construction machinery hydraulic systems, it provides stable flow control and reliable operation during continuous excavation tasks, frequent movements, and high-load working cycles.






















