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RITO High Pressure Relief Valve 4674564 4469379 Main Relief Valve ZX450 Relief Valve for Excavator Hydraulic System

A faulty relief valve triggers system overloads, shortened component life, and expensive emergency repairs, crippling productivity. Solve: The RITO 4674564/4469379 Main Relief Valve is engineered for ZX450 excavator hydraulic systems, delivering OEM-grade stability, precise pressure control, and robust durability to eliminate unplanned downtime.

  • Item NO.:

    4674564
  • Order(MOQ):

    1
  • Payment:

    T/T, WESTERN UNION, CHINESE BANK,PAYPAL
  • Product Origin:

    JAPAN
  • Lead Time:

    2-3 DAYS
  • Product Details

Generic valves leak, lose pressure, or fail prematurely, increasing operational costs and risking project delays. Solve: The RITO ZX450 Relief Valve offers factory-direct pricing, strict quality control, and wide compatibility with Hitachi ZX450/460/500 models, ensuring long-term reliability and maximum ROI.

4674564 Relief Valve

 
Product Specifications

Part Number  4674564, 4469379
Part Name High Pressure Relief Valve
Compatible Brand Hitachi
Applicable Models Hitachi ZX450, ZX460, ZX500, ZX520 
Application Excavator hydraulic system
Material High‑strength alloy steel
Product Color Silver Metallic or Steel Gray
Working Temperature -40°C to +120°C
Key Function Main pressure relief, hydraulic system overload protection, pressure stabilization
Condition 100% New, Aftermarket / OEM Quality
Packaging Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

 

Key Features & Advantages


Precision

Superior Pressure Regulation

Maintains consistent hydraulic pressure (up to 350 bar) under extreme loads, preventing system overload and ensuring stable excavator performance.

Leak-Free

Heavy‑Duty Construction

Crafted from high‑grade alloy steel with precision‑machined components, resisting wear, corrosion, and fatigue in mining and construction environments.

Direct Fitment

Perfect OEM Compatibility

Direct replacement for Hitachi 4674564/4469379; fits ZX450, ZX460, ZX500, and ZX520 excavators without modifications.

Rigorous Testing

Versatile Quality Selection

Available in Original, OEM, and Premium Aftermarket grades, allowing agents to provide tailored solutions for different budget requirements.

 

Excavator Hydraulic Part

FAQ


Q: What are the common fault symptoms of a failing main relief valve?
A: Symptoms include unstable hydraulic pressure, slow or jerky boom/arm movement, excessive system heat, oil leaks at the valve, and unusual noises (hissing/knocking) during operation.
 
Q: What are the key installation requirements for the RITO relief valve?
A: Install in a clean, dry environment; ensure correct orientation (inlet/outlet); torque to manufacturer specs; use new sealing rings; flush the hydraulic system before installation to avoid contamination.
 
Q: How do I confirm the relief valve is compatible with my excavator?
A: Verify the part number (4674564/4469379), check the excavator model (ZX450/460/500/520), confirm the hydraulic system pressure rating (315–350 bar), and match the thread size/connection type.
 
Q: How does the valve perform in extreme environments (high dust, high temperature, cold)?
A: Designed for -40°C to +120°C and high‑dust mining sites. The alloy steel body resists corrosion; high‑temperature seals prevent leaks; precision machining ensures stable pressure regulation even in harsh conditions.
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 Companies

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.

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