A: If operators report sudden, jerking reactions from the bucket or boom line, or if levers fail to return to neutral smoothly, the internal spools are likely sticking due to oil contamination.
A: Yes, manually bleed air from the main housing vent plug, fill the valve cavities with clean oil, and run the machine at low idle to prevent dry-start friction damage.
A: Cross-reference the stamped casting identifier 14693867 on your old block. This specific configuration supports Volvo EC210, EC210B, and EC240B series excavators.
A: The valve body undergoes specialized stress-relief heat treatment during manufacturing, enabling it to absorb high-frequency hydraulic shocks without developing micro-fissures or exterior body weeping.
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies






















