6HK1 No‑OEM‑6HK1 Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The 6HK1 Relief Valve (Part # No‑OEM‑6HK1) is hydraulic pressure control component, designed to limit and regulate hydraulic pressure for engineering machinery hydraulic system protection and component safeguard.

• Factory Wholesale Price: $88 – $165 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel material, precision‑ground fitting surface, stable pressure regulation and wear‑resistant performance
• MOQ & Bulk Discount: 1 Unit, favorable quotation for large‑volume hydraulic repair orders
• Lead Time: 1‑3 working days, sufficient stock supports worldwide logistics delivery
• Warranty: 12‑month replacement warranty, pressure performance test completed before packing

2. Application Scope

Specially manufactured for excavator and engineering machinery hydraulic system:

• Hydraulic System Repair: Direct replacement for failed, stuck or leaking original relief valve.
• Pressure Protection: Limit system pressure, protect hydraulic pump and other core hydraulic components.
• Repair Workshop: Standard installation dimension, easy mounting, stable pressure control performance.
• Overseas Parts Dealer: Stable supply capacity, complete QC records support cross‑border spare‑parts resale business.

3. Common Relief Valve Failure Troubleshooting

• Fault 1: System Over‑pressure
  Cause: Valve spool stuck by impurities, spring fatigue damage.
  Solution: Install brand‑new relief valve, clean hydraulic circuit and replace filter element.
• Fault 2: Unstable System Pressure
  Cause: Sealing surface wear, internal part abrasion.
  Solution: Replace complete relief valve, flush the whole hydraulic oil passage.
• Fault 3: Internal Oil Leakage
  Cause: Valve core sealing surface scratch and damage.
  Solution: Fit new relief valve, test hydraulic system pressure after installation.
• Fault 4: Hydraulic Vibration and Abnormal Noise
  Cause: Spring failure, pressure shock impact.
  Solution: Replace relief valve and inspect whole hydraulic system.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How do I confirm this relief valve fits my machine?
A: Please verify installation dimension, thread size and working pressure parameter, send machine details for quick compatibility check.

Q2: What quality tests are performed before shipment?
A: Every relief valve passes pressure regulating test and leakage test to guarantee stable hydraulic working performance.

Q3: What should be noted during installation?
A: Keep hydraulic oil clean, prevent impurities entering valve cavity, adjust system pressure strictly according to equipment requirement after installation.