A: Common symptoms include slow boom or arm movement, unstable hydraulic response, spool sticking, oil leakage, abnormal machine coordination, and reduced operating efficiency.
A: Check the part number, valve configuration, hydraulic port connections, mounting dimensions, and hydraulic system cleanliness before installation to ensure correct operation.
A: Verify the original valve part number, excavator model, hydraulic system specifications, and existing control valve information before purchase. Accurate matching helps avoid incorrect replacement issues.
A: Designed for excavator hydraulic systems, it provides stable flow distribution and responsive control during long working cycles, frequent operations, and high-load excavation tasks.






















