CAT200B No‑OEM‑CAT200B Auxiliary Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The CAT200B Auxiliary Relief Valve (Part # No‑OEM‑CAT200B) is hydraulic auxiliary relief valve, responsible for branch circuit pressure limiting and protection, prevents over‑pressure damage to excavator hydraulic cylinders and pipeline components.

• Factory Wholesale Price: $64 – $130 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel, precision grinding, stable overflow pressure, high pressure resistant, long working service life
• MOQ & Bulk Discount: 1 Unit, favorable quotation for large‑volume repair orders
• Lead Time: 1‑3 working days, sufficient stock supports worldwide logistics shipment
• Warranty: 12‑month replacement warranty, hydraulic pressure performance test completed before packing

2. Application Scope

Specially produced for excavator and engineering machinery hydraulic system:

• Hydraulic System Repair: Direct replacement for stuck, worn or invalid original auxiliary relief valve.
• Branch Pressure Protection: Limit branch circuit working pressure, protect hydraulic cylinders and related hydraulic accessories.
• Repair Workshop: Perfect matching dimension, simple installation, stable overflow regulating effect.
• Overseas Parts Dealer: Stable stock supply, complete QC records support cross‑border spare‑parts resale business.

3. Common Auxiliary Relief Valve Failure Troubleshooting

• Fault 1: Branch Circuit Power Insufficient, Slow Action
  Cause: Valve core abrasion, internal impurity blockage, spring fatigue damage.
  Solution: Replace brand‑new auxiliary relief valve, clean hydraulic oil circuit and replace filter element.
• Fault 2: Local Over‑pressure, Frequent Component Damage
  Cause: Valve core jammed, pressure control failure.
  Solution: Install new CAT200B auxiliary relief valve, adjust branch pressure to standard value after assembling.
• Fault 3: Hydraulic Abnormal Noise & Vibration
  Cause: Internal parts wear, unstable overflow pressure.
  Solution: Replace relief valve assembly, check hydraulic oil cleanliness condition.
• Fault 4: Valve Body External Oil Leakage
  Cause: Seal ring aging, thread surface damage.
  Solution: Change complete valve assembly or matched sealing kits.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

Q1: How do I confirm this auxiliary relief valve fits my machine?
A: Please verify model, thread size and pressure parameter, provide part number for fast compatibility check.

Q2: What quality tests are carried out before shipment?
A: Each CAT200B auxiliary relief valve will pass hydraulic pressure test to ensure stable overflow and pressure‑holding performance.

Q3: What should be noticed during installation?
A: Keep mounting position clean, prevent dirt entering valve interior, calibrate branch circuit pressure strictly after installation.