Main Relief Valve 3537‑171‑320‑10 for Excavator P290‑3

Keywords: 3537‑171‑320‑10 main relief valve, P290‑3 overflow valve, excavator hydraulic relief valve, cartridge relief valve, construction machinery hydraulic spare parts, aftermarket main relief valve assembly

🔹Product Overview

Main Relief Valve Part No.3537‑171‑320‑10 is hydraulic cartridge‑type main relief valve, compatible with excavator P290‑3. It is installed in main control valve manifold, responsible for setting maximum system pressure, protecting hydraulic pump, hydraulic motor and pipelines against high‑pressure impact damage. This replacement component effectively solves common faults such as weak digging force, boom drop, hydraulic oil over‑heating, system pressure drift and abnormal hydraulic noise caused by original valve core wear, spring fatigue and internal leakage.

🔹Detailed Specifications

🔹Key Features & Advantages

• 100% OEM matching thread, outer dimension and cartridge mounting size Direct plug‑in installation into valve block, no mechanical modification required.
• Precision‑machined valve core and valve seat mating surface Low internal leakage, maintain stable system pressure under heavy‑load working conditions.
• High‑fatigue‑resistance pressure spring Keep stable pressure setting value under frequent impact load.
• Complete hydraulic performance inspection finished before delivery Lower on‑site adjustment workload for repair technicians.
• Full complete valve assembly as shown in picture, ready‑to‑use for overhaul and repair jobs.

🔹Application Scope

Compatible Equipment List: ‑ Fit Machine: Excavator P290‑3, widely used for earth‑moving, quarry and engineering construction sites. ‑ Widely applied in excavator repair workshops, hydraulic system overhaul and equipment refurbishment projects.

🔹Our Company Advantage

We are professional supplier of full‑range excavator spare parts, supplying relief valves, main control valve spare parts, hydraulic pump parts, engine components and overhaul repair 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 precision valve core and thread surface during transit ‑ 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.