PC150 No‑OEM‑PC150‑Main‑Relief‑Valve Main Relief Valve Compatible with Excavator

1. Product Overview & Wholesale Price Range

The PC150 Main Relief Valve (Part # No‑OEM‑PC150‑Main‑Relief‑Valve) is a core main pressure‑overflow valve for PC150 excavator main hydraulic circuit. It controls maximum working pressure of the whole hydraulic system, protects hydraulic pump and actuators from over‑pressure damage, resolves typical malfunctions including weak digging force, system pressure cannot rise, internal leakage and hydraulic over‑pressure noise.

• Factory Wholesale Price: $118 – $210 USD Direct factory price for hydraulic repair workshops
• Material Specifications: High‑strength alloy steel valve core & housing, precision grinding, stable pressure setting, good sealing performance, long service lifespan
• MOQ & Bulk Discount: 1 Unit, favorable price for large‑volume maintenance orders
• Lead Time: 1‑3 working days, adequate stock supports global logistics delivery
• Warranty: 12‑month replacement warranty, full hydraulic pressure testing finished before dispatch

2. Application Scope

Perfectly fits PC150 excavator main hydraulic pressure‑control circuit and construction machinery overhaul works:

• Hydraulic Overhaul: Direct replacement for worn, stuck or damaged original main relief valve assembly.
• Pressure‑Fault Repair: Resolve low system pressure, weak digging power and hydraulic over‑pressure noise problems.
• Repair Workshop: Accurate thread & dimension match, convenient installation, stable 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 Force Insufficient, System Pressure Cannot Reach Standard Value
  Cause: Internal valve spool wear, sealing face damage, spring fatigue, dirt jam inside valve body.
  Solution: Install brand‑new No‑OEM‑PC150‑Main‑Relief‑Valve main relief valve, flush hydraulic circuit and replace filter element.
• Fault 2: Hydraulic System Makes Loud Over‑Pressure Noise
  Cause: Valve core sticking, pressure‑regulating spring failure.
  Solution: Fit PC150 No‑OEM‑PC150‑Main‑Relief‑Valve main relief valve, thoroughly clean the whole hydraulic oil loop.
• Fault 3: Partial Action Weak, Machine Works Sluggishly
  Cause: Internal component abrasion, pressure‑setting deviation.
  Solution: Replace complete main relief valve assembly, calibrate system pressure after installation.
• Fault 4: Oil Leakage At Main Relief Valve Joint Threads
  Cause: Seal ring aging, thread surface scratch damage.
  Solution: Change 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, thread size and system pressure parameters, provide No‑OEM‑PC150‑Main‑Relief‑Valve for fast compatibility verification.

Q2: What quality inspection will be carried out before goods dispatch?
A: Every PC150 main relief valve undergoes strict hydraulic pressure‑setting test to guarantee stable pressure‑limiting performance.

Q3: What points need attention while installing main relief valve?
A: Keep thread and mounting surface clean to prevent dirt entering valve interior, calibrate system working pressure after finishing installation.