R215‑7 Main Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The R215‑7 Main Relief Valve is key pressure‑protection part for excavator main hydraulic system. It stabilizes main circuit pressure and shields hydraulic pump and other components from over‑pressure harm. Common replacement symptoms include weak digging force, hydraulic jitter, slow implement movements and unstable system pressure.

• Factory Wholesale Price: $126 – $204 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel valve body, precision spool and spring assembly, stable pressure‑regulating performance, superior 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 matches R215‑7 excavator main hydraulic system and construction machinery overhaul projects:

• Hydraulic Overhaul: Direct replacement for worn, stuck or damaged original main relief valve assembly.
• Hydraulic Fault Repair: Fix weak digging torque, hydraulic jitter and system pressure drifting failures.
• Repair Workshop: Accurate 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 Relief Valve Failure Troubleshooting

• Fault 1: Excavator Digging Power Insufficient & Slow Working Action
  Cause: Internal spool wear, spring fatigue, dirt trapped inside valve clearance.
  Solution: Install brand‑new R215‑7 Main 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 R215‑7 Main Relief Valve, thoroughly clean the whole hydraulic oil circuit.
• Fault 3: Hydraulic System Overheat & Abnormal Working Noise
  Cause: Internal component wear, oil passages blocked by hydraulic contamination.
  Solution: Replace complete main relief valve assembly, check hydraulic oil cleanliness.
• Fault 4: Oil Leakage At Main Relief Valve Mounting Position
  Cause: Seal ring aging, mating surface scratch damage.
  Solution: Replace full main 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 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 R215‑7 Main Relief Valve goes through strict hydraulic test to guarantee stable pressure‑limiting performance.

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