YOULI YL-PV4/11S High Performance Hydraulic Proportional Valve

The YOULI YL-PV4/11S High Performance Hydraulic Proportional Valve represents a significant advancement in hydraulic control technology, offering unparalleled precision, responsiveness, and reliability for demanding industrial applications. Engineered for optimal performance, this valve boasts a nominal flow rate of 11 L/min and a maximum pressure rating of 35 MPa, ensuring robust operation even under extreme conditions. Its advanced spool and sleeve design minimizes internal leakage and friction, enabling superior control accuracy and energy efficiency. With a response time of less than 50 ms, the YL-PV4/11S facilitates rapid system adjustments, crucial for dynamic processes. The integrated electronics and digital interface further enhance its capabilities, allowing for seamless integration into modern automated systems.

Product Specifications

| Parameter             | Specification              |

| :-------------------- | :------------------------- |

| Model                 | YOULI YL-PV4/11S           |

| Type                  | Hydraulic Proportional Valve |

| Nominal Flow Rate     | 11 L/min                   |

| Maximum Pressure      | 35 MPa (350 bar)           |

| Response Time         | < 50 ms                    |

| Control Method        | Electrical Proportional    |

| Spool Type            | Usually closed center      |

| Seal Material         | Viton (standard)           |

| Voltage               | 24 VDC (standard)          |

| Electrical Connector  | M12 (standard)             |

| Operating Temperature | -20°C to +80°C             |

Core Features & Market Positioning

The YOULI YL-PV4/11S distinguishes itself through its exceptional dynamic performance and sophisticated control capabilities, positioning it as a premium choice for applications where precision and speed are paramount. Its core advantage lies in its direct-acting proportional technology, which eliminates the need for pilot stages, thereby reducing component count and enhancing responsiveness. This design minimizes internal leakage, translating to significant energy savings and consistent performance over time. Market analysis indicates that users seeking high-fidelity motion control, such as in advanced robotics, sophisticated material handling equipment, and precision manufacturing machinery, will find the YL-PV4/11S a superior solution. The valve's robust construction and high-quality materials, including Viton seals, ensure longevity and reliable operation in harsh industrial environments.

Key Application Scenarios

The versatility and high performance of the YOULI YL-PV4/11S make it ideally suited for a wide array of critical industrial applications. In the aerospace and defense sector, it excels in flight control systems and aircraft ground support equipment, where precise actuator modulation is essential for safety and operational effectiveness. For manufacturing automation, the valve is instrumental in high-speed pick-and-place machines, robotic arms, and automated assembly lines, enabling rapid and accurate movements. The renewable energy industry, particularly in wind turbine pitch control systems, benefits from the YL-PV4/11S's ability to precisely adjust blade angles for optimal power generation and structural integrity. Furthermore, in heavy machinery and construction equipment, it provides fine control over hydraulic functions like boom articulation and outrigger deployment, enhancing operational efficiency and safety.

Practical System Integration Guidance

Integrating the YOULI YL-PV4/11S into existing hydraulic systems requires careful attention to electrical connections and hydraulic porting. The valve typically utilizes a standard M12 electrical connector for its 24 VDC power supply and control signal. Ensure the power supply is stable and within the specified voltage range to prevent performance degradation or damage. For hydraulic connections, ports are clearly marked (e.g., P for pressure, T for tank, A and B for actuator ports). Proper filtration of the hydraulic fluid is critical; maintaining a cleanliness level of ISO 18/16/13 or better is recommended to prevent spool contamination and ensure long-term reliability. When configuring the control system, proportional drive signals (e.g., PWM or analog voltage) must be correctly mapped to the valve's command inputs, often requiring specific settings within the PLC or dedicated motion controller.

Operation and Risk Mitigation

Operating the YOULI YL-PV4/11S hydraulic proportional valve safely and effectively involves understanding its operational parameters and potential failure modes. Always ensure the hydraulic system is de-energized and depressurized before performing any maintenance or adjustments. Over-pressurization beyond the 35 MPa rating can lead to component failure and potential safety hazards; utilize appropriate pressure relief valves within the system. Contamination of the hydraulic fluid is a primary cause of proportional valve malfunction; implement a rigorous fluid maintenance schedule and use high-quality filters. Common troubleshooting may involve checking electrical connections for looseness or corrosion, verifying control signal integrity, and inspecting for physical damage to the valve body or spool. While specific fault codes are typically managed by the external control system, deviations in flow or pressure response can indicate internal issues requiring professional diagnosis.

Scalability & Long-Term Value

The YOULI YL-PV4/11S is designed with scalability and long-term value in mind, offering robust performance that aligns with industry trends towards enhanced automation and digital integration. Its compatibility with a wide range of hydraulic power units and control systems makes it an excellent choice for both new installations and upgrades of existing machinery. The valve's precise control characteristics can contribute to improved product quality and reduced waste in manufacturing processes, offering a clear return on investment. For future-proofing systems, the YL-PV4/11S is amenable to integration with Industrial Internet of Things (IIoT) platforms. By incorporating sensors and data logging capabilities, systems utilizing this valve can provide valuable operational insights, enabling predictive maintenance and performance optimization, thereby extending the equipment's useful life and enhancing overall operational efficiency.

Frequently Asked Questions

Q1: What is the primary function of the YOULI YL-PV4/11S?

The YL-PV4/11S precisely controls hydraulic fluid flow and pressure. It allows for proportional adjustments based on electrical input signals. This enables fine-tuned motion control for hydraulic actuators.

This precise control is vital in applications demanding accuracy. It ensures smooth and responsive operation of machinery. The valve's performance directly impacts system efficiency.

It facilitates automation by translating electronic commands into hydraulic action. This is crucial for complex automated processes. The valve acts as a key interface in modern hydraulic systems.

Q2: What are the key advantages of using the YL-PV4/11S over traditional valves?

Its main advantage is superior control accuracy and responsiveness. The direct-acting design minimizes lag and enhances dynamic performance. This leads to more precise actuator movements.

The valve offers excellent energy efficiency due to reduced internal leakage. This translates to lower operating costs for the system. It maintains consistent performance over a wide range of operating conditions.

Compared to pilot-operated valves, it has fewer internal components. This simplifies system design and reduces potential failure points. It provides faster response times for critical operations.

Q3: What is the maximum operating pressure for this valve?

The YOULI YL-PV4/11S is rated for a maximum operating pressure of 35 MPa. This is equivalent to 350 bar or approximately 5075 psi. This high pressure rating allows its use in demanding industrial applications.

Operating within this pressure limit ensures the valve's longevity and reliability. Exceeding this limit can lead to component damage or catastrophic failure. Always ensure your system's pressure relief mechanisms are properly set.

It's crucial to consult the full system design to confirm pressure compatibility. Ensure all connected components can also withstand the system's maximum pressure. Proper system design guarantees safe and efficient operation.

Q4: How does the nominal flow rate of 11 L/min affect application suitability?

A nominal flow rate of 11 L/min is suitable for medium-duty hydraulic applications. It allows for moderate actuator speeds and response times. This flow rate is ideal for precise, yet not excessively rapid, movements.

This specification means the valve can manage a significant volume of fluid. It's well-suited for applications requiring controlled force and motion. Think precise positioning or moderate lifting capacities.

For very high-speed or large-bore actuator applications, a higher flow rate valve might be necessary. Conversely, for very low-flow applications, this valve offers excellent control resolution. It balances performance and efficiency for many tasks.

Q5: What are the typical industries that benefit from the YL-PV4/11S?

Manufacturing automation heavily relies on this valve for robotics. It enables precise manipulation and assembly tasks. Also, material handling equipment benefits from its control.

Aerospace and defense sectors utilize it for critical flight controls. Its precision ensures safety and operational reliability in demanding environments. Test rigs also benefit from its accurate fluid delivery.

The renewable energy sector uses it for precise control, like wind turbine pitch. Construction machinery also benefits from its fine hydraulic adjustments. These industries demand high reliability and performance.

Q6: Can the YL-PV4/11S be integrated into existing PLC systems?

Yes, the YL-PV4/11S is designed for seamless integration with PLCs. It accepts standard proportional control signals from most controllers. This makes it adaptable to current automation setups.

You will need to configure your PLC's output to match the valve's requirements. This typically involves setting up PWM or analog outputs correctly. Consult your PLC's manual for specific output configuration.

The valve's digital interface options can further simplify integration. This allows for direct communication and advanced control strategies. It's a versatile component for modern control architectures.

Q7: What electrical connector type is standard on the YL-PV4/11S?

The standard electrical connector for this valve is an M12 type. This is a common and robust connector in industrial settings. It provides a secure and reliable electrical connection.

This connector typically supports the valve's power and control signals. Ensure you use a compatible M12 cable and socket for proper connection. Verify the pinout specified in the product documentation.

The M12 connector offers good resistance to dust and moisture. This enhances its suitability for harsh industrial environments. It simplifies installation and maintenance procedures.

Q8: How important is hydraulic fluid filtration for this valve's operation?

Hydraulic fluid filtration is critically important for the YL-PV4/11S. Contaminants can cause spool sticking or wear, affecting performance. Maintaining fluid cleanliness ensures precise operation and longevity.

A recommended cleanliness level is ISO 18/16/13 or finer. This helps protect the valve's internal components from damage. Use high-quality filters and establish a regular maintenance schedule.

Poor filtration can lead to premature valve failure and system downtime. It's a fundamental aspect of hydraulic system reliability. Investing in good filtration protects your valve investment.

Q9: What is the typical response time of the YL-PV4/11S?

The YOULI YL-PV4/11S has a response time of less than 50 milliseconds. This indicates a very rapid change in valve spool position. It allows for quick adjustments to hydraulic flow and pressure.

This fast response is essential for dynamic applications. It enables precise control of rapidly moving actuators. Examples include robotics and high-speed automation.

A faster response time improves system agility and productivity. It ensures the hydraulic system can keep pace with control commands. This characteristic is a key performance differentiator.

Q10: What maintenance considerations are essential for the YL-PV4/11S?

Regular inspection of electrical connections for corrosion or looseness is vital. Verify the integrity of the hydraulic fluid and filtration system routinely. Monitor valve performance for any deviations from expected operation.

Ensure the system operates within specified pressure and temperature limits. Avoid sudden pressure surges or shocks to the valve. Proper system design and maintenance prevent most issues.

If troubleshooting is required, consult the product manual. For persistent issues or internal problems, professional service may be necessary. Preventative maintenance is key to maximizing its lifespan.