Hitachi EX1900-5 EX1900-6 Main Control Valve | Original Valve Assemblies 4480288 4480287 4480289 C0040-70002 C0040-70001

These genuine main control valves with part numbers 4480288, 4480287, 4480289, C0040-70002 and C0040-70001 are tailor-made for Hitachi EX1900-5 and EX1900-6 excavators. As the core hydraulic distribution component, it precisely controls the hydraulic oil flow and pressure for boom, arm, bucket and traveling operations. It ensures coordinated movement, stable working performance and high operating efficiency of the heavy-duty excavator under harsh construction conditions.

For optimal performance and longevity, use genuine hydraulic oil maintaining a cleanliness level of NAS 7. Regular maintenance checks should include monitoring oil temperature, pressure pulsation, and component wear.

In case of hydraulic system failure, contact qualified professional technicians for inspection or reach out to our technical support team for troubleshooting assistance. Avoid improper repairs to prevent additional damage and ensure operational safety.

Guangzhou Tieqi Engineering Machinery Co., Ltd. ("IRON CAVALRY") is strategically located in Guangzhou's Huangpu District, approximately one hour from Baiyun International Airport. With nearly 15 years of specialized experience in engineering machinery hydraulics, we have established ourselves as industry leaders in heavy equipment components.

• Ready inventory of over 500 assembly types, providing access to more than 6,000 different parts
• Core products include hydraulic pumps, control valves, travel, and swing assemblies
• Specialization in large mining excavator components and hard-to-find items
• 4,000-square-meter factory equipped for professional manufacturing, precision assembly, and rigorous testing
• Integrated supply chain providing cost-effective, convenient one-stop solutions

For large items, we use sturdy plywood crates secured with metal fasteners. Products are carefully cushioned with bubble wrap and secured with wooden braces. External crate reinforcement includes high-strength PET plastic strapping and waterproof black film to ensure safe transit and delivery.

• One-stop solution for all your hydraulic needs
• High-quality products at competitive prices
• Exceptional customer service that makes you feel at home
• Large inventory with short delivery times and long warranty periods
• Professional expertise with accurate data for excavator part number inquiries
• Ability to source parts for nearly all your equipment needs