Ensure your excavator hydraulic system operates at peak performance with the premium 723-40-71800 Main Relief Valve. Specifically engineered for Komatsu PC200-7 and PC220-7 models, this valve acts as the critical safety and regulation component to prevent pressure overloads during heavy-duty operations.
| Model NO. | PC200-7, PC200LC-7, PC210-7, PC220-7, PC220LC-7 |
|---|---|
| Product Name | Main Relief Valve / Pressure Control Valve |
| Part Number | 723-40-71800 (Also known as 7234071800) |
| Type | Hydraulic Control Components |
| Condition | Brand New, OEM Standard Replacement |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL, Fedex, EMS, UPS or by Air/Sea |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch Available |
| Packaging | Industrial Export Packing |
| Application | Hydraulic Pump System Maintenance, Pressure Regulation |
| Key Factors | Standard Market Grade | Our OEM-Standard Replacement |
|---|---|---|
| 1. Material Durability | Low-grade steel prone to wear | High-strength alloy steel with anti-corrosion coating |
| 2. Pressure Accuracy | Frequent fluctuations, risk of pump damage | Precise calibration to Komatsu factory specs (34.3 MPa) |
| 3. Sealing Tech | Standard rubber seals (leaks in 6 months) | High-temp resistant fluorinated rubber seals |
| 4. Fitment Ease | Minor adjustments often required | 100 percent Bolt-on ready for PC200-7/PC220-7 |
| 5. Response Speed | Slow relief response under heavy load | Instant pressure discharge to protect hydraulic lines |
| 6. Service Life | Short lifecycle, high replacement costs | Extended service intervals for engine rebuild and maintenance |
Direct communication for fleet owners and repair shops. We ensure you get the right part the first time.
A: This is often caused by a malfunctioning main relief valve like the 723-40-71800. If the valve fails to hold the required pressure, the hydraulic system loses flow efficiency. Replacing with a new 7234071800 restores original digging force and cycle times.
A: Check for symptoms such as excessive noise from the hydraulic pump, overheating of hydraulic oil, or the inability to lift heavy loads. During your regular engine overhaul or maintenance, inspecting the relief valve is vital for preventing catastrophic pump failure.
A: Our version features an OEM-standard tri-metal structure and is trusted by professional repair shops and heavy equipment fleets globally. It provides the perfect balance between cost-efficiency and factory-level reliability.
Our team helps operators:
- Identify potential risks during maintenance
- Recommend suitable replacement parts if needed
- Support both inspection advice and parts supply
We specialize in complete engine assemblies and precision components for world-leading brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our inventory supports a wide range of maintenance needs from minor repairs to full engine rebuilds.
Please fill out the form below to receive a customized quote for 723-40-71800 or any other engine parts.
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