Guangzhou Gangwo Engineering Machinery Parts Department
| Model | HX480L HX520L R360LC9 R380LC9SH R390LC9 |
| Delivery Time | 3-7 Days |
| Services | During working hours |
| Part Name | Main Relief Valve Safety Valve |
| Packaging Details | Carton |
| Payment Terms | L/C,D/A,D/P,T/T |
| MOQ | 1PC |
| Supply Ability | 10000 pcs per month |
| P/N | 31QB-17730 |
| Stock | In stock |
| Model Number | HX480L HX520L R360LC9 R380LC9SH R390LC9 |
| Brand Name | GVO |
| Certification | CE,ISO |
| Place of Origin | China |
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Product Specification
| Model | HX480L HX520L R360LC9 R380LC9SH R390LC9 | Delivery Time | 3-7 Days |
| Services | During working hours | Part Name | Main Relief Valve Safety Valve |
| Packaging Details | Carton | Payment Terms | L/C,D/A,D/P,T/T |
| MOQ | 1PC | Supply Ability | 10000 pcs per month |
| P/N | 31QB-17730 | Stock | In stock |
| Model Number | HX480L HX520L R360LC9 R380LC9SH R390LC9 | Brand Name | GVO |
| Certification | CE,ISO | Place of Origin | China |
| High Light | GVO excavator relief valve ，main relief valve for R390LC9 ，safety valve for HX520L excavator | ||
GVO 31QB-17730 Main Control Relief Valve Main Relief Valve Safety Valve for HX480L HX520L R360LC9 R380LC9SH R390LC9 Excavators
Key attributes
|
Name |
Main Relief Valve |
|
P/N |
31QB-17730 |
|
Model |
HX480L HX520L R360LC9 R380LC9SH R390LC9 |
|
Package |
Carton |
|
Certificate |
CE, ISO |
|
Delivery |
3-5 Days |
|
Shipping port |
Huangpu |
Precise Pressure Control & Protection
As the primary safety valve in the hydraulic system, it accurately controls and limits the maximum hydraulic system pressure, preventing it from exceeding safe thresholds. This effectively protects critical components such as the hydraulic pump, cylinders, and lines from costly damage caused by pressure spikes.
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 of cost-effective hydraulic components and electrical systems for excavators. Based in Guangzhou, China, we are committed to delivering value through quality products, efficient service, and competitive pricing.Our main products include hydraulic pumps, gear pumps, pressure relief valves, throttle motors, and a complete range of electrical components. We cover most mainstream excavator brands and models, with full specifications and ample stock to meet customer demand.
All components are precision-machined and inspected under strict quality control procedures. Our products feature high precision, excellent pressure resistance, superior sealing, and stable performance — effectively resolving common failures such as power shortage, hydraulic leaks, system vibration, and electrical problems.
As a direct manufacturer, we eliminate middlemen and provide high-quality replacement parts with reliable compatibility, consistent durability, and affordable pricing.We support bulk orders, custom specifications, and efficient global delivery through mature production systems and comprehensive export logistics. Through stable quality and professional after-sales support, we have established long-term, mutually beneficial relationships with customers 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.
GVO — Value-Driven. Quality-Focused. Globally Connected.
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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