A: Primary warnings present as a sudden loss of speed across multiple joystick controls when the oil heats up, combined with rapid oil temperature spikes and high fuel burn.
A: Mechanics should hook a pressure gauge to the main pump diagnostic port and adjust the cartridge settings to match the factory-specified pressure limit while the engine runs at full revs.
A: Yes, it serves as a universal main pressure provider for the listed 20-ton class excavator series, matching the factory mounting metrics across all chassis variations.
A: The inner valve spool and seat are case-hardened using advanced heat conditioning, which preserves optimal material grain structure and stops surface erosion from high-pressure fluid joints.
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






















