Guangzhou Gangwo Engineering Machinery Parts Department
| Model | R210-7 R215-9 R220-7 R225-7 |
| Delivery Time | 3-7 Days |
| Services | During working hours |
| Payment Terms | L/C,D/A,D/P,T/T, |
| MOQ | 1PC |
| P/N | 31Q4-17750 31Q8-17790 |
| Supply Ability | 10000 pcs per month |
| Part Name | Secondary Relief Valve |
| Stock | In stock |
| Packaging Details | Carton |
| Model Number | R210-7 R215-9 R220-7 R225-7 |
| Certification | CE,ISO |
| Brand Name | GVO |
| Place of Origin | China |
View Detail Information
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Product Specification
| Model | R210-7 R215-9 R220-7 R225-7 | Delivery Time | 3-7 Days |
| Services | During working hours | Payment Terms | L/C,D/A,D/P,T/T, |
| MOQ | 1PC | P/N | 31Q4-17750 31Q8-17790 |
| Supply Ability | 10000 pcs per month | Part Name | Secondary Relief Valve |
| Stock | In stock | Packaging Details | Carton |
| Model Number | R210-7 R215-9 R220-7 R225-7 | Certification | CE,ISO |
| Brand Name | GVO | Place of Origin | China |
31Q4-17750 31Q8-17790 Secondary Relief Valve for Excavator R210-7 R215-9 R220-7 R225-7
Key attributes
|
Name |
Secondary Relief Valve |
Packing |
Carton |
|
Model |
R210-7 R215-9 R220-7 R225-7 |
Certificate | CE, ISO |
|
P/N |
31Q4-17750 31Q8-17790 |
Delivery | 3-15 Days |
|
MOQ |
1PC |
Shipping port | Huangpu,Guangzhou |
Precise Overload Protection: Provides fast and accurate overload protection. When pressure in a specific circuit (e.g., boom, arm, bucket) reaches its set point, the valve opens instantly to relieve excess pressure, preventing damage to components like cylinders, hoses, and the pump.
Optimized Circuit Performance: Prevents premature relief, which can cause a circuit to lose power and operate sluggishly. It ensures each hydraulic function operates at its intended pressure for maximum efficiency and power.
Designed for Specific Models: The 31Q8-17790 is primarily used on larger models like the R225-7. Both valves are suitable for a range of modern excavators, including the R210-7, R215-9, R220-7, and R225-7.
If you need other relief valves, send us the related details please:
1.The pictures
2.The p/n
3.The size
Massive Inventory – 40,000 m³ of ready stock means we have what you need, when you need it.
Fast Shipping – We ship the day you order. No waiting, no excuses.
Precision Matching – We verify every part against your machine specification before it ships.
Brand Coverage – We stock parts for 13+ major brands, so you don't have to shop around.
Flexible Options – We offer what fits your budget and requirements.
Honest Pricing – No hidden fees, no markups. What you see is what you pay.
Reliable Support – We don't disappear after the sale. We're here before, during, and after.
| Service | What You Get |
|---|---|
| Quality Assurance | Every part inspected before shipment |
| Custom Orders | We locate and supply hard-to-find parts |
| After-Sales Support | Installation guidance and ongoing assistance |
| Wholesale Pricing | Competitive rates for dealers and bulk buyers |
| Technical Advice | Expert guidance on compatibility and performance |
Our Promise – We treat every order like it's urgent. Because we know downtime costs you more than money — it costs time, trust, and progress.
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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