A: Typical symptoms include slow boom or arm movement, unstable hydraulic pressure, spool sticking, oil leakage, abnormal machine response, and reduced operating efficiency.
A: Verify the part number, valve configuration, hydraulic pipeline connections, mounting dimensions, pilot circuit, and system cleanliness before installation to ensure proper performance.
A: Confirm the OEM part number, excavator model, hydraulic valve configuration, and original valve information. RITO also supports professional model verification before shipment.
A: Manufactured with precision-machined valve components, it delivers stable hydraulic flow and responsive control during long operating hours, heavy loads, and harsh working conditions.






















