A: Common symptoms include slow boom or arm movement, unstable hydraulic response, oil leakage, spool sticking, abnormal machine coordination, and reduced working efficiency.
A: Check the part number, valve configuration, mounting dimensions, hydraulic port connections, spool arrangement, and hydraulic oil cleanliness before installation to ensure correct operation.
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: Designed for excavator hydraulic systems, it provides stable flow distribution and responsive control during long working hours, frequent operation cycles, and high-load excavation tasks.






















