Main Relief Valve 4372038 For Hitachi Excavator EX200‑5 EX210H‑5 IZX200 ZX200‑3 ZX210W ZX240‑3 ZX225USR‑3

Keywords: 4372038 main relief valve, Hitachi EX200‑5 relief valve, ZX200‑3 main overflow valve, excavator hydraulic main relief valve, cartridge relief valve, Hitachi excavator hydraulic spare parts, aftermarket main relief valve assembly

🔹Product Overview

Main Relief Valve Part No.4372038 is a cartridge‑type main relief valve for excavator hydraulic main control valve, compatible with Hitachi EX200‑5, EX210H‑5, IZX200, ZX200‑3, ZX210W, ZX240‑3, ZX225USR‑3 excavator. It sets the maximum working pressure of the whole hydraulic system, protects hydraulic pump, hydraulic motor, cylinder and pipelines from damage caused by excessive pressure. This replacement valve solves common failures such as weak digging power, boom drifting, hydraulic oil overheating, system pressure deviation and abnormal hydraulic noise caused by spool wear, spring fatigue and internal leakage. Manufactured strictly according to OEM size for direct replacement installation.

🔹Detailed Specifications

🔹Key Features & Advantages

• OEM‑matched overall dimension, thread size and valve core structure, direct plug‑in installation without modification.
• Precision‑ground valve spool and valve seat, effectively reduce internal leakage, keep stable system pressure.
• High‑strength pressure spring, stable pressure‑relief response under heavy‑load working conditions.
• Good anti‑pollution performance, adapt to complex construction site hydraulic oil environment.
• Every relief valve undergoes hydraulic pressure testing before delivery to guarantee working performance.
• Excellent interchangeability, perfect for hydraulic valve overhaul and on‑site emergency repair.

🔹Application Scope ‑

Fit Equipment: Hitachi EX200‑5, EX210H‑5, IZX200, ZX200‑3, ZX210W, ZX240‑3, ZX225USR‑3 excavators ‑ Widely used for machinery repair workshops, equipment fleet maintenance and excavator hydraulic system overhaul projects.

🔹Our Company Advantage

We are professional supplier of full‑range construction machinery spare parts, supplying hydraulic parts, engine parts, electrical parts, seal kits and complete overhaul kits. ‑ Large ready stock for various machinery spare parts ‑ Factory‑direct wholesale competitive price ‑ Mixed‑order & one‑stop spare‑parts procurement supported ‑ Professional part‑number matching technical support service

🔹Packaging & Shipping ‑

Anti‑collision inner package, protect parts during transportation ‑ Export‑grade outer carton for safe sea and land transportation ‑ Multiple shipping options: sea freight, air freight, international express for small trial orders ‑ Export documents such as Commercial Invoice, Packing List can be provided.

🔹Contact Us

If you need more excavator spare parts or other construction machinery replacement components, please send your parts list to us. We will offer our best quotation for you quickly.