Product Description
We have two factories, one for casting and one for precision machining, with integrated manufacturing processes to ensure our customers receive the maximum benefits.This version emphasizes the integration and customer benefit.

The casting material ranges from HT250 to HT350, QT400-18 to QT700-2, RuT260 to RuT420, and all other kinds of alloy iron casting.


### Product Description: SD8 Return Oil Valve Body Die Casting
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#### Overview
Introducing the SD8 Return Oil Valve Body, a pinnacle of engineering excellence designed for high-performance applications in hydraulic systems. Crafted with precision through advanced die casting techniques, the SD8 valve body is engineered to meet the rigorous demands of various industrial machines, automotive applications, and hydraulic equipment. This high-quality component is a testament to durability, reliability, and exceptional operational efficiency.
#### Material and Manufacturing Excellence
The SD8 Return Oil Valve Body is manufactured using high-grade aluminum alloys that are specifically chosen for their remarkable strength-to-weight ratio, corrosion resistance, and malleability. The die casting process ensures that each valve body is produced with excellent dimensional accuracy and surface finish, resulting in a product that is not only robust but also facilitates smooth and efficient flow within the hydraulic system.
The advanced die casting technique employed in the production of the SD8 ensures minimal waste and consistent quality, contributing to environmentally friendly manufacturing practices. This approach not only enhances the structural integrity of the valve body but also allows for complex geometries to be achieved without compromising strength or performance.
#### Design Features
One of the standout features of the SD8 Return Oil Valve Body is its innovative design tailored to optimize hydraulic fluid flow. The valve body features strategically placed ports and passages that minimize turbulence and restriction, allowing for efficient return flow of oil. This design is crucial in ensuring that the hydraulic system maintains optimal performance, reducing the risk of cavitation and enhancing the overall longevity of the machinery.
Additionally, the valve body incorporates precision-engineered seals and fittings that prevent leaks and ensure a secure connection within the hydraulic system. The SD8 is designed to operate effectively under varying pressure conditions, making it suitable for a wide range of applications, from heavy machinery to automotive hydraulic systems.
#### Performance and Efficiency
The SD8 Return Oil Valve Body is not just a component; it plays a vital role in the efficiency of hydraulic systems. By facilitating the smooth return of hydraulic oil, the valve body helps maintain the system's pressure balance and reduces the load on pumps. This efficiency leads to lower energy consumption, ultimately contributing to cost savings in the long run.
The robust construction of the SD8 valve body allows it to withstand demanding conditions, such as high temperatures and pressures, without compromising its integrity. This makes it an ideal choice for industrial applications where reliability is paramount. Whether in a factory setting or integrated into mobile machinery, the SD8 delivers consistent performance, ensuring that operations run smoothly and efficiently.
#### Versatility and Application
The versatility of the SD8 Return Oil Valve Body makes it an essential component for various industries, including:
1. **Construction Machinery**: Used in hydraulic excavators, loaders, and cranes to manage fluid flow effectively and enhance operational efficiency. 2. **Automotive Industry**: Ideal for hydraulic brake systems and power steering applications, where precise control of hydraulic fluid is critical. 3. **Agricultural Equipment**: Supports the functionality of tractors and combines, ensuring reliable performance in the field. 4. **Manufacturing and Automation**: Integral to hydraulic presses and robotic systems, facilitating optimal fluid management under industrial conditions.
With its universal fit and compatibility with a variety of hydraulic systems, the SD8 Return Oil Valve Body provides flexibility, making it a valuable addition to any equipment manufacturer’s portfolio.
#### Conclusion
In summary, the SD8 Return Oil Valve Body is a superior product engineered for excellence in hydraulic applications. With its robust construction, innovative design, and outstanding performance characteristics, this valve body not only meets but exceeds industry standards. Ideal for those seeking reliability, efficiency, and durability, the SD8 is your go-to solution for ensuring the smooth operation of hydraulic systems across various industries. Invest in quality and choose the SD8 Return Oil Valve Body for a dependable and high-performing hydraulic component that helps keep your machinery running at its best.
**Product Description: SD8 Return Oil Valve Body Die Casting**
The SD8 Return Oil Valve Body Die Casting is a state-of-the-art component designed to enhance the operational efficiency and reliability of hydraulic systems in a wide range of applications. Engineered with precision, this valve body embodies the perfect balance of quality, durability, and functionality that industry professionals seek in hydraulic components.
**Overview**
In hydraulic systems, the return oil valve plays a crucial role in managing fluid flow, maintaining consistent pressure, and ensuring the smooth operation of hydraulic machinery. The SD8 Return Oil Valve Body is crafted from high-quality die-cast materials that guarantee exceptional strength and resistance to wear and tear. With its robust construction, this valve body minimizes the risk of leaks and failures, making it an indispensable component for heavy-duty applications.
**Materials and Manufacturing**
At the core of the SD8 Return Oil Valve Body is a high-grade aluminum alloy, selected for its outstanding mechanical properties and lightweight characteristics. This material not only significantly reduces the overall weight of the hydraulic system but also enhances thermal conductivity, ensuring optimal performance under varying temperature conditions. The die-casting process utilized in crafting the SD8 valve body allows for intricate designs and tight tolerances, resulting in a flawless fit and finish that is vital for proper system functioning.
The die-casting technique is a sustainable manufacturing process that reduces material waste and energy consumption compared to traditional metal working methods. This environmentally friendly approach aligns with modern industrial practices, making the SD8 Return Oil Valve Body an eco-conscious choice for companies aiming to minimize their carbon footprint.
**Design and Features**
One of the standout features of the SD8 Return Oil Valve Body is its innovative design, which includes multiple ports for efficient fluid management. The strategically placed inlet and outlet ports allow for seamless integration into existing hydraulic systems, offering maximum flexibility for assembly and maintenance. Additionally, the compact form factor of the valve body is engineered to fit snugly in tight spaces, addressing the challenges faced in modern machinery design.
The internal geometry of the valve body is meticulously designed to minimize turbulence and maximize fluid flow. This results in enhanced system efficiency, reduced energy consumption, and improved overall performance. Furthermore, the surface finish of the SD8 valve body is optimized for low friction, contributing to smoother operation and extending the lifecycle of the valve under continuous use.
**Performance and Reliability**
Performance is paramount in any hydraulic system, and the SD8 Return Oil Valve Body does not disappoint. Rigorous testing protocols are followed during manufacturing to ensure that each valve body meets stringent quality standards. The valve is capable of withstanding high pressures and extreme conditions, making it suitable for various applications, from construction and mining equipment to agricultural machinery and automotive systems.
The product’s sealing technology plays a pivotal role in its reliability. Advanced seals and gaskets ensure that the return oil flows efficiently without leakage, safeguarding the system's integrity and reducing maintenance costs. The SD8 valve is also resistant to common hydraulic fluids and contaminants, providing peace of mind to users who demand durability in challenging environments.
**Applications**
The versatility of the SD8 Return Oil Valve Body makes it an ideal choice for an array of applications. It is well suited for use in:
- Hydraulic Excavators - Loaders and Bulldozers - Agricultural Tractors - Injection Molding Machines - Truck and Trailer Hydraulics - Marine Vessels
In each of these applications, the SD8 valve body contributes to smoother operations, increased productivity, and longer equipment lifespans.
**Conclusion**
The SD8 Return Oil Valve Body Die Casting represents the pinnacle of hydraulic technology, combining innovative design, robust materials, and reliable performance. By choosing the SD8 valve body, you are investing in a product that not only meets the demanding standards of today’s hydraulic systems but also offers long-term value through durability and efficiency. Whether you are a manufacturer, engineer, or technician, the SD8 Return Oil Valve Body is the smart choice for enhancing the effectiveness of your hydraulic operations. Embrace the future of hydraulic performance with the SD8 – where quality meets innovation.









The casting material ranges from HT250 to HT350, QT400-18 to QT700-2, RuT260 to RuT420, and all other kinds of alloy iron casting.


Coated sand casting components have been widely used in various industries due to their high precision, complex structural forming ability, and excellent surface quality. We provide hydraulic solutions such as gear pumps, multi way valves, solenoid valves, hydraulic motors, etc. for the engineering machinery, agricultural machinery, coal mining machinery, metallurgical and chemical industries.
The materials used include gray cast iron, ductile iron, and nodular cast iron
All of these materials are designed to ensure lightweight structures, enhance wear resistance, and reliability under extreme environmental conditions.



Q1: What is the highest precision that Film coated sand shell casting can achieve?
A: Film coated sand shell casting can achieve ISO 8062 CT9 level precision (key dimensions ±0.3mm).
Q2: Do we accept small batch orders? How long does the delivery time usually take for
small batch orders?
A: Yes, of couse. We adopt a flexible production system to ensure a rapid response, utilizing 3D printing of film coated sand shell casting and validating the casting process.
Under normal circumstances, the delivery time for small batch orders will be influenced by the order size, complexity, and
production scheduling. Upon receiving the order, we initiate the production process promptly and maintain close communication with the customer to ensure the timely delivery of precision casting parts that meet the requirements.
Q3: How can we ensure the internal quality of the castings?
A: we employ a four-level inspection system to ensure the internal quality of the castings:
● Process monitoring: Use industrial endoscopes for 100% full inspection to ensure the quality of the internal cavity.
● Physical and chemical analysis: Using direct reading spectrometers and electron microscopes (inclusion detection accuracy up to 0.01mm level) for analysis.
● Mechanical verification: Sampling each batch of castings for fatigue testing (number of cycles > 10^7 times).
● Digital traceability: If special requirements are present, we will add a casting number to each batch of parts, achieving full traceability of the melting batch and process parameters.
Q4: Do we provide one-stop service for subsequent machining/surface treatment?
A: We provide a one-stop integrated service for the entire process chain:
● Machining support: Five-axis CNC + coordinate grinding machine (positioning accuracy up to ±0.03mm)
● Surface strengthening: Shot peening / phosphating/nitriding / PVD coating (hardness up to HRC65)
● Assembly and inspection: Equipped with air tightness testing and dynamic balance testing equipment.
The surface of each casting is smooth and clean, free from bumps, pores, and sand holes.Every product undergoes 100% inspection before packaging to ensure flawless quality.
1. Precision Endoscopic Testing: Advanced endoscopic instruments are used to detect internal defects and guarantee the reliability of the oil circuit.
2. Comprehensive Material Testing: Casting test bars are subjected to tensile, elongation, and metallographic (microstructure) analysis to ensure mechanical strength and material integrity.
Standard packaging uses wooden boxes or wooden pallets wrapped with plastic film.
Customized packaging can also be provided according to customer requirements.
Our professional engineering team is always ready to assist you with technical consultation and feedback.
We can also provide free samples to help you evaluate our products.
We make every effort to deliver the best products and services to our customers.
If you are interested in our company and products, please feel free to contact us by email or phone.
You are also welcome to visit our factory to learn more about our capabilities.
We sincerely welcome customers from all over the world to establish long-term business relationships with us,
and we believe we will share a successful and rewarding cooperation experience together.



Xingtai Xiaolongwang Precision Hydraulic Pump Industry Co., Ltd.








Attribute
Model NO.:
SD8Applications:
agriculture and industry auto partsMaterial:
nodular cast ironSurface Roughness:
Ra12.5Certification:
ISO 9001:2000Specification:
By drawingSand Core Type:
Resin Sand CoreMachining:
Machining CenterSurface Treatment:
Sand BlastTrademark:
xiaolongwang