This RITO 4480288 4630690 Hydraulic Main Relief Valve Assembly is a critical safety component for Hitachi EX1900-5 and EX1900-6 large excavators, designed to regulate maximum system pressure and protect the hydraulic system from overload. It ensures stable pressure control, reliable operation, and enhanced safety in heavy-duty mining environments.
Item NO.:
4480288Order(MOQ):
1Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPALProduct Origin:
JAPANLead Time：
2-3 DAYSExcessive pressure, system overload, and component damage can lead to costly downtime and safety risks. This relief valve assembly is engineered with OEM-level precision, featuring accurate pressure regulation, high-pressure resistance, and durable construction for extreme working conditions. Backed by RITO’s stable supply chain and professional technical team, we provide fast technical support and rapid replacement solutions to keep your mining operations running safely and efficiently.
| Part Number | 4480288 4630690 |
|---|---|
| Part Name | Control Valve |
| Compatible Brand | HITACHI |
| Applicable Models | EX1900-5, EX1900-6 |
| Application | Excavator hydraulic system |
| Material | High-strength alloy steel |
| Product Color | Metallic gray |
| Working Temperature | -20°C to 120°C |
| Key Function | Regulate and limit hydraulic system pressure |
| Condition | 100% New, Aftermarket / OEM Quality |
| Packaging | Wooden Case/Reinforced Carton/Neutral Packing / Customized Box |
Maintains stable system pressure and prevents overload damage in high-demand operations.
Designed for large excavators, capable of handling extreme pressure and continuous mining conditions.
Manufactured to original specifications for precise fit and dependable performance.
Protects key hydraulic components, reducing failure risk and maintenance costs.
FAQ
A: Pressure instability, overpressure, leakage, or system overheating usually indicate valve malfunction.
A: Ensure correct pressure setting, proper sealing, and clean hydraulic oil to maintain system safety.
A: We provide original, OEM, and high-quality aftermarket versions with stable supply capability.
A:It protects the hydraulic system from excessive pressure, preventing major component damage and downtime.
Q:Can it handle extreme mining conditions?
A: Yes, it is designed for high-pressure, continuous heavy-duty operation in mining environments.
Q:Why Choose RITO?
A:Listed Factory
Stable&Reliable Quality
OEM Factory for Chinese Top Excavator Brands
Supplier to Fortune 500 Companies
Optimize your Hitachi excavator's performance with this premium hydraulic joystick pilot control valve, precision-engineered for ZX350, ZX330, and ZX130LCN-3 models. It delivers smooth, accurate handling and rugged durability for demanding job sites.
View More
This RITO 9295140 4663831 Hydraulic Pump is a core power component for Hitachi ZAXIS75US-3 and ZAXIS85USB-3 excavators, responsible for converting mechanical energy into stable hydraulic pressure to drive the arm, bucket, and travel systems. It ensures smooth operation, consistent flow output, and reliable performance under demanding construction and mining conditions.
View More
This RITO 9285566 9285685 9290597 9290598 Hydraulic Pump is a core component for Hitachi ZAXIS120-3 excavators, responsible for converting mechanical energy into stable hydraulic pressure to power the arm, bucket, and travel systems. It ensures smooth operation, precise flow control, and reliable performance in construction and mining environments.
View More
This RITO 9262319 9262320 Hydraulic Pump is a core component for Hitachi ZAXIS200-3 excavators, responsible for converting mechanical energy into stable hydraulic pressure to power the arm, bucket, and travel systems. It ensures smooth operation, precise flow control, and reliable performance in construction and mining environments.
View More
This RITO 9257345 9257346 Hydraulic Pump is a core component for Hitachi ZAXIS270-3 excavators, responsible for converting mechanical energy into stable hydraulic pressure to drive the arm, bucket, and travel systems. It ensures smooth operation, precise flow control, and reliable performance in construction and mining environments.
View More
This RITO 9254122 4635645 9254123 0005271 Hydraulic Pump is a heavy-duty core component for Hitachi ZAXIS650LC-3 excavators, designed to convert mechanical energy into stable, high-pressure hydraulic output for demanding arm, bucket, and travel operations. It ensures smooth power transmission, precise flow regulation, and reliable performance in extreme mining and large-scale construction environments.
View More
This RITO 9197075 0003954 Hydraulic Pump is a heavy-duty core component for Hitachi ZAXIS600 excavators, engineered to convert mechanical energy into stable, high-pressure hydraulic output for arm, bucket, and travel operations. It ensures smooth power transmission, precise flow control, and reliable performance in demanding mining and large-scale construction environments.
View More
This RITO 9195239 9195237 Hydraulic Pump is a core component for Hitachi ZAXIS270 excavators, designed to convert mechanical energy into stable hydraulic pressure to power the arm, bucket, and travel systems. It ensures smooth operation, precise flow control, and reliable performance in construction and medium to heavy-duty working environments.
View MoreLeave A Message
Scan to wechat :
