Guangzhou Gangwo Engineering Machinery Parts Department
| Model | R500LC7 R520LC9 R520LC9A R520LC9S RD510LC-7 |
| Delivery Time | 3-7 Days |
| Services | During working hours |
| Part Name | Main Relief Valve |
| Packaging Details | Carton |
| Payment Terms | L/C,D/A,D/P,T/T |
| P/N | 31QB-17730 |
| MOQ | 1PC |
| Supply Ability | 10000 pcs per month |
| Stock | In stock |
| Model Number | R500LC7 R520LC9 R520LC9A R520LC9S RD510LC-7 |
| Brand Name | GVO |
| Certification | CE,ISO |
| Place of Origin | China |
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Product Specification
| Model | R500LC7 R520LC9 R520LC9A R520LC9S RD510LC-7 | Delivery Time | 3-7 Days |
| Services | During working hours | Part Name | Main Relief Valve |
| Packaging Details | Carton | Payment Terms | L/C,D/A,D/P,T/T |
| P/N | 31QB-17730 | MOQ | 1PC |
| Supply Ability | 10000 pcs per month | Stock | In stock |
| Model Number | R500LC7 R520LC9 R520LC9A R520LC9S RD510LC-7 | Brand Name | GVO |
| Certification | CE,ISO | Place of Origin | China |
| High Light | GVO excavator relief valve ，R500LC7 relief valve ，R520LC9 excavator valve | ||
31QB-17730 Distribution Valve Rotary Hydraulic Pump Valve Safety Valve for Excavator R500LC7 R520LC9 R520LC9A R520LC9S RD510LC-7
Key attributes
|
Name |
Main Relief Valve |
|
P/N |
31QB-17730 |
|
Model |
R520LC9 R520LC9A R520LC9S RD510LC-7 |
|
Package |
Carton |
|
Certificate |
CE, ISO |
|
Delivery |
3-5 Days |
|
Shipping port |
Huangpu |
Precise Overload Protection – The valve instantly opens when system pressure exceeds its preset limit, diverting excess oil back to the tank to protect expensive components from pressure spikes and overload damage. On compatible models, the setting pressure can be raised when the power max function is activated, increasing digging power.
If you need other relief valves, send us the related details please:
1.The pictures
2.The p/n
3.The size
GVO Company Overview
Guangzhou GVO Precision Hydraulic is a professional manufacturer and exporter specializing in the research, development, and production of cost-effective hydraulic components and electrical parts for excavators. Headquartered in Guangzhou, China, we are dedicated to providing reliable solutions that balance quality and affordability for the global construction machinery industry.
We manufacture and supply hydraulic pumps, gear pumps, pressure relief valves, throttle motors, and a complete range of electrical components. Our product lineup covers most mainstream excavator brands and models, with complete specifications and extensive inventory to ensure timely delivery.
All components are precision-machined and inspected under strict quality control standards. Our products deliver high precision, excellent pressure resistance, superior sealing, and stable performance — effectively resolving common mechanical failures such as power deficiency, hydraulic leakage, system jitter, and electrical malfunctions.
As a direct factory supplier, we eliminate intermediaries and provide high-quality replacement parts with reliable compatibility, consistent durability, and competitive pricing — ensuring exceptional value for our customers.With mature production systems, comprehensive export capabilities, and a strong commitment to customer satisfaction, we support bulk orders, customized processing, and efficient global delivery. Through stable product quality and responsive after-sales support, we have established long-term, trusting partnerships with clients worldwide.
Operational Capabilities
We maintain a comprehensive supply chain covering engine, hydraulic, electrical, sealing, bearing, and gear components for all major excavator brands. Our 40,000 m³ warehousing facility ensures extensive stock availability, enabling same-day dispatch and rapid order fulfilment.
Our team
GVO — Cost-Effective. Reliable. Trusted Worldwide.
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
关于我们:我们是一家致力于生产高精度挖掘机配件的制造商. 我们的业务范围:我们的供应链主题发动机零部件,液压元件,溢流,先导泵,齿轮,电气元件,密封件和轴承.我们服务于第三个市场,在挖掘机零部件行业拥有超过15年的经验,... 关于我们:我们是一家致力于生产高精度挖掘机配件的制造商. 我们的业务范围:我们的供应链主题发动机零部件,液压元件,溢流,先导泵,齿轮,电气元件,密封件和轴承.我们服务于第三个市场,在挖掘机零部件行业拥有超过15年的经验,...
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