A: Typical signs include slow actuator response, unstable hydraulic operation, poor coordination between functions, oil leakage, spool wear, and reduced excavator efficiency.
A: Confirm the part number, excavator model, valve configuration, hydraulic port connections, mounting dimensions, and hydraulic system cleanliness before installation.
A: Verify the original valve number, machine model, hydraulic system details, and existing control valve information before purchasing to avoid incorrect replacement.
A: Designed for excavator hydraulic systems, it provides stable oil flow control and reliable operation during long working cycles, frequent movements, and high-load excavation tasks.






















