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

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

Unstable hydraulic pressure causes sluggish operation and costly pump damage for mines. Low-grade valves leak or fail under high-stress cycles, halting production. The 4674564 / 4469379 ensures peak pressure stability. This Main Relief Valve for ZX450 offers zero-leakage precision.

Item NO.:
4674564
Order(MOQ):
1
Payment:
T/T, WESTERN UNION, CHINESE BANK,PAYPAL
Product Origin:
JAPAN
Lead Time：
2-3 DAYS

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Product Details

Stop risking expensive hydraulic components with unverified valves. Our 4674564 is built for extreme mining excavation, offering agents a high-margin, OEM-quality solution. Precise calibration of the 4469379 protects the pump system, ensuring long-term reliability and fleet safety.

4674564 Relief Valve

Product Specifications

Part Number	4674564 / 4469379
Part Name	Main Relief Valve
Compatible Brand	Hitachi
Applicable Models	Hitachi ZX450 / ZX450LC
Application	Excavator hydraulic system
Material	High-Strength Alloy Steel
Product Color	Silver Chrome or Metallic Grey
Working Temperature	-25°C to 105°C
Key Function	Regulating maximum system pressure to protect hydraulic circuits
Condition	100% New, Aftermarket / OEM Quality
Packaging	Wooden Case/Reinforced Carton/Neutral Packing / Customized Box

Key Features & Advantages

High-Precision Pressure Regulation

Ensures consistent hydraulic output by accurately maintaining system pressure, preventing surges that damage sensitive pumps and actuators.

Superior Wear Resistance

Forged from premium hardened steel to withstand high-velocity oil flow and abrasive particles common in heavy-duty mining environments.

Direct OEM Interchangeability

Specifically calibrated for the ZX450 hydraulic system, providing a perfect fit and immediate restoration of factory-standard machine performance.

Leak-Proof Sealing Technology

Utilizes advanced sealing components to eliminate internal leakage, maximizing hydraulic efficiency and reducing fuel consumption across the fleet.

Excavator Hydraulic Part

FAQ

Q: What specific failure symptoms indicate the 4674564 relief valve needs testing?
A: If the ZX450 exhibits a sudden drop in breakout force, overheating hydraulic oil, or unusually slow cycle times under load, the 4674564 may be stuck open or leaking internally. A whistling sound near the control valve often points to a worn seat within the 4469379 bypassing high-pressure oil.

Q: What are the critical technical requirements for installing a new relief valve?
A: Cleanliness is paramount; even microscopic contaminants can ruin the valve seat. After installing the 4674564, a pressure gauge must be used to verify the cracking pressure. Do not over-torque the valve during installation, as this can distort the internal sleeve and cause the poppet to stick.

Q: How do we confirm the 4674564 / 4469379 is the correct fit for our specific fleet?
A: These part numbers are primary for ZX450 series main pumps. We recommend cross-referencing your serial number with the OEM catalog. For large-scale procurement, our engineers can provide technical schematics to ensure the 4674564 matches your machine's specific pressure settings and port sizes.

Q: How does this relief valve perform in extreme mining or high-altitude environments?
A: Our 4674564 is designed for thermal stability. The internal springs and seals maintain consistent tension and elasticity from -25°C to 105°C. This prevents "pressure drift" during cold starts in winter or during continuous high-load operations in hot, high-altitude mining sites where cooling efficiency is reduced.

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

Related Tags :

4674564

ZX470-3 Relief Valve

High Pressure Relief Valve

Hydraulic Relief Valve

Main Relief Valve

Control Valve Relief Valve

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

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