R200‑3 Main Auxiliary Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The R200‑3 Main Auxiliary Relief Valve is core pressure‑limiting component for excavator main hydraulic system. It regulates main and auxiliary circuit working pressure, prevents over‑pressure damage to hydraulic pump and actuators. Common replacement symptoms include weak digging force, boom & arm jitter, pressure drift and slow working movements.

• Factory Wholesale Price: $130 – $210 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel body, precision spool and spring assembly, stable pressure adjustment performance, excellent wear‑resistance and sealing performance, long service life
• MOQ & Bulk Discount: 1 Unit, favorable price for large‑volume maintenance orders
• Lead Time: 1‑3 working days, sufficient stock supports worldwide logistics delivery
• Warranty: 12‑month replacement warranty, full hydraulic pressure testing completed before shipment

2. Application Scope

Perfectly fits R200‑3 excavator main hydraulic system and construction machinery overhaul projects:

• Hydraulic Overhaul: Direct replacement for worn, stuck or damaged original main auxiliary relief valve assembly.
• Hydraulic Fault Repair: Fix insufficient digging force, hydraulic jitter and system pressure drifting failures.
• Repair Workshop: Precise dimension matching, simple installation, reliable pressure‑limiting performance.
• Overseas Parts Dealer: Stable inventory supply, complete QC records support cross‑border spare‑parts trading.

3. Common Main Auxiliary Relief Valve Failure Troubleshooting

• Fault 1: Excavator Digging Power Weak & Working Speed Slow
  Cause: Internal spool wear, spring fatigue, dirt trapped inside valve clearance.
  Solution: Install brand‑new R200‑3 Main Auxiliary Relief Valve, flush hydraulic circuit and replace hydraulic filter.
• Fault 2: Hydraulic Jitter & Unstable System Pressure
  Cause: Valve core abrasion, internal spring performance degradation.
  Solution: Fit R200‑3 Main Auxiliary Relief Valve, thoroughly clean the whole hydraulic oil circuit.
• Fault 3: Hydraulic System Overheat & Abnormal Noise
  Cause: Internal component wear, oil passages blocked by hydraulic contamination.
  Solution: Replace complete main auxiliary relief valve assembly, check hydraulic oil cleanliness.
• Fault 4: Oil Leakage At Valve Mounting Position
  Cause: Seal ring aging, mating surface scratch damage.
  Solution: Replace full main auxiliary relief valve assembly or matching seal repair kit.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How do I confirm this main auxiliary relief valve fits my excavator?
A: Please confirm excavator model and installation dimension for fast compatibility verification.

Q2: What quality inspection will be carried out before goods dispatch?
A: Every R200‑3 Main Auxiliary Relief Valve goes through strict hydraulic test to guarantee stable pressure‑limiting performance.

Q3: What points need attention while installing main auxiliary relief valve?
A: Keep mounting surface and oil ports clean to prevent dirt entering valve interior, test digging force and system pressure after installation.