A: Typical signs include slow actuator response, unstable hydraulic movement, abnormal spool operation, oil leakage, and reduced excavator working efficiency.
A: Confirm the valve model, excavator compatibility, hydraulic port connections, mounting dimensions, and hydraulic oil cleanliness to ensure correct installation.
A: Check the original valve model, machine model, hydraulic system information, and existing component details before purchase to avoid incorrect matching.
A: Designed for excavator hydraulic systems, it provides stable oil flow control and reliable operation during continuous working cycles and demanding job site conditions.






















