Guangzhou Gangwo Engineering Machinery Parts Department
| Model | R210-7 R210-9 R215-7 R305 Excavators |
| Services | During working hours |
| Delivery Time | 3-7 Days |
| Payment Terms | L/C,D/A,D/P,T/T, |
| MOQ | 1PC |
| P/N | 31Q8-17781 31Q8-17783 31N6-17400 |
| Supply Ability | 10000 pcs per month |
| Part Name | Main Relief Valve |
| Stock | In stock |
| Packaging Details | Carton |
| Model Number | R210-7 R210-9 R215-7 R305 Excavators |
| Certification | CE,ISO |
| Brand Name | GVO |
| Place of Origin | China |
View Detail Information
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Product Specification
| Model | R210-7 R210-9 R215-7 R305 Excavators | Services | During working hours |
| Delivery Time | 3-7 Days | Payment Terms | L/C,D/A,D/P,T/T, |
| MOQ | 1PC | P/N | 31Q8-17781 31Q8-17783 31N6-17400 |
| Supply Ability | 10000 pcs per month | Part Name | Main Relief Valve |
| Stock | In stock | Packaging Details | Carton |
| Model Number | R210-7 R210-9 R215-7 R305 Excavators | Certification | CE,ISO |
| Brand Name | GVO | Place of Origin | China |
31Q8-17781 31Q8-17783 31N6-17400 Main Relief Valve for R210-7 R210-9 R215-7 R305 Excavators
Key attributes
|
Name |
Main Relief Valve |
Packing |
Carton |
|
Model |
|
Certificate | CE, ISO |
|
P/N |
31Q8-17781 31Q8-17783 31N6-17400 |
Delivery | 3-15 Days |
|
MOQ |
1PC |
Shipping port | Huangpu,Guangzhou |
Critical Overload Protection
The core function of these main relief valves is to limit the maximum working pressure of the hydraulic system. When system pressure rises abnormally – such as during heavy digging or breaking operations – the valve opens instantly to release excess oil back to the tank. This effectively prevents costly damage to the main pump, control valves, cylinders, and other core components.
Reliable Performance & System Stability
Featuring pilot-operated or direct-acting designs, these valves respond quickly and precisely to pressure changes. They maintain system pressure accurately at a preset safe level, ensuring stable, controllable power output during heavy-duty operations.
Rugged Construction for Demanding Conditions
Robust Valve Body – Made from high-strength materials with excellent corrosion resistance.
Durable Internals – Key internal components are hardened and precision-ground to withstand extreme pressures and wear.
Reliable Seals – Ensure long-term leak-free performance in hydraulic oil.
If you need other relief valves, send us the related details please:
1.The pictures
2.The p/n
3.The size
| Factor | GVO |
|---|---|
| Stock Availability | 40,000 m³ ready stock |
| Shipping Speed | Fast day dispatch |
| Matching Accuracy | Precision verification |
| Pricing Transparency | Clear, upfront pricing |
| Customer Support | Available at every stage |
The Difference
We don't just supply parts. We supply reliability, speed, and confidence.
GVO – The competitive edge you need.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter,Trading Company
Year Established:
2012
Total Annual:
7500000-12000000
Employee Number:
100~150
Ecer Certification：
Verified Supplier
Who we are: We are excavator spare parts manufacturer to do high quality products What we do: Our supply chain covers engine parts, hydraulic parts, relief valves, pilot pumps, gear parts electrical parts, seals, bearings, we serve the domestic market and overseas markets, in the field of excav... Who we are: We are excavator spare parts manufacturer to do high quality products What we do: Our supply chain covers engine parts, hydraulic parts, relief valves, pilot pumps, gear parts electrical parts, seals, bearings, we serve the domestic market and overseas markets, in the field of excav...
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