448-5704 593-6628 Excavator Hydraulic Relief Valve for 390F L 390F 352F 374F

The 448-5704 / 593-6628 Excavator Relief Valve is a hydraulic pressure control valve designed for compatible 390F L, 390F, 352F and 374F excavators. It helps regulate hydraulic system pressure and protect compatible hydraulic components from excessive pressure during machine operation.

Manufactured with a precision-machined metal body and durable internal components, this relief valve is designed to provide stable pressure control and dependable performance in demanding construction and earthmoving applications.

It is suitable for replacing a worn, damaged, leaking, or malfunctioning hydraulic relief valve and uses reference part numbers 448-5704 and 593-6628.

For accurate compatibility, please verify the part number, machine model, serial number, valve dimensions, thread specification and installation position before ordering.

Product Specifications

Key Features

• Stable Pressure Control – Designed to regulate hydraulic pressure within the compatible operating system.
• Hydraulic System Protection – Helps limit excessive pressure and protect compatible hydraulic components.
• Precision-Machined Construction – Manufactured for consistent fitment and dependable operation.
• Heavy-Duty Durability – Suitable for demanding excavator and construction machinery working conditions.
• Replacement Solution – Designed for compatible 448-5704 / 593-6628 relief valve applications.
• Easy Maintenance Replacement – Compact cartridge-style construction helps simplify servicing and replacement.
• Multiple Excavator Applications – Suitable for compatible 390F L, 390F, 352F and 374F excavators.

Compatible Models

390F L Excavator
390F Excavator
352F Excavator
374F Excavator

Reference Part Numbers:
448-5704 / 593-6628

Application:
Excavator Hydraulic System / Hydraulic Pressure Control

Fitment Notice: The same excavator model may use different hydraulic valves depending on machine serial number and hydraulic system configuration. Please confirm the 448-5704 / 593-6628 part number, valve appearance, thread size, dimensions and installation position before purchase.

Why Choose JISION?

JISION supplies replacement hydraulic, engine and electrical components for excavators and construction machinery worldwide.

Our product range includes relief valves, control valves, solenoid valves, hydraulic pumps, pilot valves, sensors, controllers, engine parts, wiring harnesses and other excavator spare parts.

For this 448-5704 / 593-6628 Excavator Relief Valve, we can assist with part-number and application verification before shipment.

Suitable for excavator owners, repair workshops, construction fleets, equipment dealers, spare-parts distributors and international wholesalers.

Part Number Verification · Bulk Orders · Fast Quotation · Worldwide Shipping · Professional Parts Support

Ordering Information

For faster quotation and compatibility verification, please provide:

1. Part Number: 448-5704 / 593-6628
2. Machine Model: 390F L / 390F / 352F / 374F
3. Machine serial number, if available
4. Photos of the original relief valve
5. Required quantity

For uncertain applications, photos showing the complete valve, threads, mounting position and any engraved numbers are recommended.

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