DH130‑7 No‑OEM‑DH130‑7 Swing Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The DH130‑7 Swing Relief Valve (Part # No‑OEM‑DH130‑7) is special swing overflow valve for excavator swing hydraulic circuit. It realizes swing circuit over‑pressure protection, stabilizes swing hydraulic pressure and protects swing motor from pressure‑impact damage.

• Factory Wholesale Price: $80 – $150 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel, precision grinding treatment, anti‑wear, stable pressure output, long‑term service lifespan
• MOQ & Bulk Discount: 1 Unit, favorable price for bulk maintenance orders
• Lead Time: 1‑3 working days, adequate stock supports worldwide logistics shipment
• Warranty: 12‑month replacement warranty, full hydraulic pressure test completed before goods delivery

2. Application Scope

Designed for DH130‑7 excavator swing hydraulic system and engineering machinery maintenance:

• Hydraulic Overhaul: Direct replacement for worn, stuck or failed original swing relief valve.
• Swing‑circuit Pressure Protection: Control swing hydraulic pressure, safeguard swing motor against over‑pressure impact damage.
• Repair Workshop: Good dimensional compatibility, convenient installation, stable pressure‑regulating performance.
• Overseas Parts Dealer: Stable inventory supply, complete QC records support cross‑border spare‑parts trading.

3. Common Swing Relief Valve Failure Troubleshooting

• Fault 1: Weak Swing Power, Slow Rotation Speed
  Cause: Spool wear, internal impurity clogging, spring fatigue deformation.
  Solution: Install new swing relief valve, clean hydraulic oil circuit and replace filter element.
• Fault 2: Swing Hydraulic Circuit Over‑pressure, Swing Motor Damage
  Cause: Valve core stuck, pressure control function failure.
  Solution: Fit DH130‑7 No‑OEM‑DH130‑7 swing relief valve, calibrate swing‑circuit pressure to standard value after assembly.
• Fault 3: Abnormal Hydraulic Noise & Vibration While Slewing
  Cause: Internal parts abrasion, unstable overflow pressure.
  Solution: Replace complete valve assembly, check hydraulic oil cleanliness.
• Fault 4: Oil Leakage At Valve Thread Connection Position
  Cause: Sealing ring aging, thread surface scratch damage.
  Solution: Change whole valve or matching seal repair kit.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How do I confirm this swing relief valve fits my excavator?
A: Please confirm machine model, thread dimension and pressure parameter, provide part number No‑OEM‑DH130‑7 for fast compatibility verification.

Q2: What quality tests are carried out before shipment?
A: Each DH130‑7 swing relief valve will pass hydraulic pressure test to guarantee stable overflow and pressure‑holding performance.

Q3: What points need attention during installation?
A: Keep mounting area clean, prevent dirt entering valve interior, adjust swing‑circuit hydraulic pressure strictly after installation.