Filter and sort
Heavy-Duty Main Relief Valves & Hydraulic Pressure Control Spares
Special Offers
-
723-40-91500 Relief Valve For Komatsu Excavator PC200-7 PC200-8 Main Valve
723-40-91500 Relief Valve For Komatsu Excavator PC200-7 PC200-8 Main Valve Part Number: 723-40-91500 Application: For Komatsu Excavator PC200-7 PC200-8 Main Valve Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for...Regular price $ 79 -
Relief Valve 723-10-12800 For Komatsu PC45MR-3 PC55MR-3 PC40MR-1 PC50MR-2
Relief Valve 723-10-12800 For Komatsu PC45MR-3 PC55MR-3 PC40MR-1 PC50MR-2 Part Number: 723-10-12800 Application: For Komatsu PC45MR-3 PC55MR-3 PC40MR-1 PC50MR-2 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for installation. Stable...Regular price $ 72 -
Service Relief Valve 4308965 for Hitachi EX120-2 EX120-3
Service Relief Valve 4308965 for Hitachi EX120-2 EX120-3 Part Number: 4308965 Application: for Hitachi EX120-2 EX120-3 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for installation. Stable operation: Ensures consistent performance...Sale price $ 79Regular price $ 109 -
6754-72-1220 Overflow Pressure Limit Relief Valve For Komatsu PC200-8 Excavator
6754-72-1220 Overflow Pressure Limit Relief Valve For Komatsu PC200-8 Excavator Part Number: 6754-72-1220 Application: For Komatsu PC200-8 Excavator Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for installation. Stable operation: Ensures...Regular price $ 60 -
723-40-71900 Pressure Relief Valve For Komatsu PC220/300-8 Excavator Valve Part
Product Information: Part No.: 723-40-71900 Package includes: 1 pc Pressure Relief Valve Application :For Komatsu PC220/300-8 Excavator Key Features: Direct-fit replacement: No modification required for installation. Stable operation: Ensures consistent performance under standard conditions. Heavy-duty design: Engineered to support...Regular price $ 120 -
Main Relief Valve 4228354 for Hitachi EX200 EX200-1 EX220-3 EX300-2 EX300-3
Main Relief Valve 4228354 for Hitachi EX200 EX200-1 EX220-3 EX300-2 EX300-3 Part Number: 4228354 Application: for Hitachi EX200 EX200-1 EX220-3 EX300-2 EX300-3 Condition: New Aftermarket Parts In Stock Key Features: Direct-fit replacement: No modification required for...Regular price $ 82
If your excavator is losing power under load or your hydraulic system is overheating, a worn replacement relief valve is often the root cause. As the primary safety and pressure regulator, a high-precision main relief valve protects your pumps and cylinders by diverting excess oil back to the tank once the set pressure is reached. BeeSpareParts stocks a wide range of cartridge and bolt-on relief valves built to maintain factory-spec breakout forces in harsh environments.
Hydraulic pressure issues are often linked to other components. If adjusting the valve doesn't restore power, we recommend inspecting your for internal wear, or browsing our to stop internal pressure bypass. Our relief valve assemblies feature hardened steel poppets and precision-wound springs, providing a cost-effective alternative to expensive original dealer parts.
Whether you need a main relief valve for an excavator, a port relief valve for a specific circuit, or a pressure control unit for a loader, our parts are factory-tested for accurate opening and closing pressures and are ready for fast international shipping. Regain your digging power—order your heavy-duty hydraulic valve solution today.
Fits for:
-
Engine & Model Series: 4BT, 6BT, 4D95, 6D102, S6K, S4K, J05E, J08E, 4HK1, 6HK1.
-
Equipment Models: ZX, PC, SK, EC, EX series excavators, backhoes, and mobile hydraulic systems.