Guangzhou Tieqi Construction Machinery Co., Ltd.
                                                                                                           
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Use For Hitachi ZX30U-5A ZX35U-5A Excavator Main Control Valve High Quality Main Control Valve Construction Machinery Aftermarket Parts 4722750 KYB C0070-23057

Price Negotiable
Price: Negotiable price
MOQ: 1 PCS
Delivery Time: 5-8 Weekdays
Brand: IRON CAVALRY
Product Description
Hitachi ZX30U-5A / ZX35U-5A Excavator Main Control Valve
High-quality aftermarket main control valve designed for Hitachi ZX30U-5A and ZX35U-5A excavators. Part numbers: 4722750, KYB C0070-23057.
Product SpecifiTQTQCATions
ModelZX30U-5A ZX35U-5A Excavator Control Valve
TQTQCATegoryCONTROL VALVE
BrandIRON CAVALRY
Place of OriginCHINA
ConditionOriginal & OEM
Warranty12 months
MOQ1 pcs
Production Capacity1000pcs / Month
Standard or NonstandardStandard
Payment TermL/C, T/T, Western Union, Trade Assurance
Delivery Time1-3 days (depending on order)
Means of TransportBy Sea, Air or DHL/FEDEX/TNT/EMS
Close-up view of Komatsu SK1020 Control Valve showing detailed construction
Side view of main control valve assembly with hydraulic connections
Front perspective of excavator control valve showing port configurations
Product Overview
Regulates hydraulic oil flow, direction, and pressure to control dozer blade movement, track travel, and compound operations. Serves as the hydraulic system's core controller for precise excavator performance.
Technical Parameters
  • System Pressure: Main relief valve setting pressure is 34.3 MPa (350 kg/cm²), suitable for high-pressure hydraulic systems ensuring sufficient power output for digging, swing, and traveling operations.
  • Structure Type: Slide valve type multi-section main control valve integrating multiple hydraulic control branches including digging circuit, swing circuit, and traveling circuit.
  • Control Method: Equipped with pilot control system for precise hydraulic control of boom lifting/lowering, arm extension/retraction, and machine swing/traveling through pilot joystick.
  • Applicable Models: Custom-made for ZX30U-5A and ZX35U-5A excavators, fully matching hydraulic parameters of dediTQTQCATed hydraulic pumps and actuators.
AppliTQTQCATion Features
  • Hydraulic System "Brain": Receives operator commands to control flow direction, pressure, and volume
  • Controls boom lift/lower, arm extension/retraction, and bucket rotation operations
  • Manages swing, left/right travel, and dozer blade operation
  • Complex Motion Coordination: Manages multiple actuators simultaneously for smooth, efficient operation
Installation & Maintenance
  • Installation Requirements: Requires flexible coupling with high shaft alignment accuracy (concentricity deviation ≤ 0.1 mm, tilt angle < 1°)
  • Maintenance Guidelines: System overpressure protection, single-operation overload protection, and prevention of dangerous misoperations
About IRON CAVALRY
Guangzhou Tieqi Engineering Machinery Co., Ltd. ("IRON CAVALRY") is strategically loTQTQCATed in Guangzhou's Huangpu District, approximately an hour from Baiyun International Airport. With nearly 15 years of specialization in engineering machinery hydraulics, we are driven by core values of "Pragmatism and Progress."
Technical Leadership: In China's excavator hydraulic assembly sector, our efficient execution and rigorous manufacturing approach ensure products meet over 95% of original performance specifiTQTQCATions, building widespread trust among clients.
Exterior view of Guangzhou Tieqi Engineering Machinery facility
Factory production line with hydraulic components being manufactured
Company exhibition booth at international trade show
Professional team members working on hydraulic systems
Company certifiTQTQCATions and quality awards display
Product packaging and delivery preparation with secure crating
Packaging & Shipping
For large items, we use sturdy plywood crates secured with metal fasteners for stability. Products are cushioned with bubble wrap and secured with wooden braces, with special attention to protecting vulnerable parts. External reinforcement includes high-strength PET plastic strapping and waterproof black film wrapping.
Why Choose IRON CAVALRY?
  • Comprehensive one-stop solutions for all hydraulic needs
  • High-quality products at competitive prices
  • Exceptional customer service and support
  • Large inventory with short delivery times
  • Long warranty periods for peace of mind
  • Professional expertise with accurate part number identifiTQTQCATion

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Guangzhou Tieqi Construction Machinery Co., Ltd.
Location Guangzhou Tieqi Construction Machinery, No. 238, Zhongshan Avenue East, Huangpu District, Guangzhou, Guangdong
Contact Person wangfeng

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