KATO 55 | Swing Relief Valve | Excavator Hydraulic Valve Compatible with KATO

1. Product Overview & Wholesale Price Range

KATO 55 Swing Relief Valve is a specialized hydraulic pressure‑control spare‑part for excavator swing system. It undertakes pressure limiting protection for swing motor hydraulic circuit. Common replacement scenarios include weak swing power, abnormal swing noise, internal leakage, valve core wear and hydraulic pressure failure.

• Factory Wholesale Price: $135 – $202 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel valve body, precision‑ground valve core assembly, excellent pressure‑resistance and sealing performance, stable pressure‑limiting output, long service life
• Fit Model: KATO 55 Excavator
• MOQ & Bulk Discount: 1 Unit, preferential quotation for bulk maintenance orders
• Lead Time: 1‑3 working days, sufficient stock supports worldwide logistics shipment
• Warranty: 12‑month replacement warranty, pressure‑resistance and sealing testing finished before shipment

2. Application Scope

This swing relief valve is developed for KATO 55 excavator swing hydraulic maintenance & overhaul:

• Swing Hydraulic Circuit Overhaul: Direct replacement for original damaged swing relief valve assembly.
• Swing Fault Repair: Resolve insufficient swing torque, swing noise, internal leakage and pressure‑loss faults.
• Repair Workshop Usage: Precise dimension matching, easy installation, stable pressure‑limiting performance.
• Overseas Parts Reseller: Stable inventory, complete QC records to support cross‑border spare‑parts trading.

3. Common Swing Relief Valve Failure Troubleshooting

• Fault 1: Excavator Swing Power Insufficient
  Cause: Internal valve core wear, spring fatigue, hydraulic oil impurity contamination.
  Solution: Install brand‑new swing relief valve, flush hydraulic circuit and replace hydraulic filter element.
• Fault 2: Abnormal Noise While Excavator Swing
  Cause: Pressure‑regulating spring damage, sealing surface abrasion, pressure oscillation.
  Solution: Replace complete swing relief valve assembly, inspect hydraulic oil cleanliness.
• Fault 3: Internal Leakage inside Relief Valve Assembly
  Cause: Valve core scratch, seal aging, long‑term high‑pressure impact damage.
  Solution: Fit new swing relief valve, check swing motor internal wear condition.
• Fault 4: Unstable Swing Hydraulic Pressure
  Cause: Internal component fatigue, foreign particles trapped inside valve chamber.
  Solution: Replace full swing relief valve assembly, clean the whole hydraulic oil loop.

4. Matching Hydraulic Spare Parts Recommendation

Valve Seal Repair Kit

5. Frequently Asked Questions

Q1: How can I confirm this swing relief valve fits my excavator?
A: Verify your machine model is KATO 55, check valve dimension and thread size for compatibility before ordering.

Q2: What quality inspection is carried out before shipment?
A: Each swing relief valve passes pressure‑resistance and sealing performance testing before delivery.

Q3: What notes should be followed during installation?
A: Keep mounting thread and oil ports clean to prevent dirt entering valve interior, test swing pressure performance after installation.