A: Typical signs include slow excavator movement, unstable hydraulic response, oil leakage, spool sticking, abnormal actuator operation, and reduced working efficiency.
A: Confirm the valve part number, excavator model, mounting dimensions, hydraulic port connections, spool configuration, and hydraulic oil cleanliness before installation.
A: Verify the original part number, machine model, hydraulic system information, and existing control valve details before purchasing. Accurate matching helps avoid incorrect replacement issues.
A: The valve is designed for excavator hydraulic systems and provides stable flow distribution and reliable control during long working cycles, high-load operations, and demanding job site conditions.






















