PC400‑7 Travel Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The PC400‑7 Travel Relief Valve is core pressure‑protection part for excavator travel hydraulic circuit. It sets maximum working pressure for travel motor assembly, prevents hydraulic parts from damage caused by over‑pressure. Common replacement symptoms include weak traveling power, slow moving speed, one‑side travel lag, system over‑heat and pressure instability.

• Factory Wholesale Price: $122 – $210 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel body, precision internal spool assembly, accurate pressure‑limiting value, excellent wear‑resistance and sealing performance, long working 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 PC400‑7 excavator hydraulic system and construction machinery overhaul projects:

• Hydraulic Overhaul: Direct replacement for worn, stuck or damaged original travel relief valve assembly.
• Hydraulic Fault Repair: Fix weak travel, slow movement and travel‑circuit over‑pressure related failures.
• Repair Workshop: Accurate dimension matching, simple installation, stable pressure‑limiting performance.
• Overseas Parts Dealer: Stable inventory supply, complete QC records support cross‑border spare‑parts trading.

3. Common Travel Relief Valve Failure Troubleshooting

• Fault 1: Excavator Travel Power Weak & Moving Speed Slow
  Cause: Internal spool wear, spring fatigue, dirt trapped inside valve clearance.
  Solution: Install brand‑new PC400‑7 Travel Relief Valve, flush hydraulic circuit and replace hydraulic filter.
• Fault 2: Single Side Travel Lag, Pressure Not Balanced
  Cause: Valve core abrasion, internal spring performance degradation.
  Solution: Fit PC400‑7 Travel Relief Valve, thoroughly clean the whole hydraulic oil circuit.
• Fault 3: Hydraulic System Overheat & Abnormal Vibration
  Cause: Internal component wear, oil passages blocked by hydraulic contamination.
  Solution: Replace complete travel relief valve assembly, check hydraulic oil cleanliness.
• Fault 4: Oil Leakage At Travel Relief Valve Mounting Position
  Cause: Seal ring aging, mating surface scratch damage.
  Solution: Replace full travel relief valve assembly or matching seal repair kit.

4. Matching Hydraulic Spare Parts Recommendation

5. Frequently Asked Questions

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

Q2: What quality inspection will be carried out before goods dispatch?
A: Every PC400‑7 Travel Relief Valve goes through strict hydraulic test to guarantee stable travel pressure‑limiting performance.

Q3: What points need attention while installing travel relief valve?
A: Keep mounting surface and oil ports clean to prevent dirt entering valve interior, test travel power and moving speed after installation.