A: A noticeable drop in movement speed when operating multiple levers at once, severe cylinder drift under load when handles are in neutral, and high oil temperatures.
A: Workshop crews must completely flush the system to clear out debris from previous component breakdowns, and replace the inline pilot and return line filters before operating.
A: Yes, it arrives as a complete master control unit with pre-calibrated factory tracking and cylinder circuit relief valves installed, allowing direct drop-in installation on standard equipment.
A: The cast iron framework undergoes specialized stress-relieving thermal tempering during production to prevent internal bore warping, stopping high-pressure fluid bypass even under intense hammer vibration.
Q: What quality options are available?
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 Companie






















