YOULI SN-4/2S-4/28L/18L/G446 4-Way Multiple Control Valve Bank

The YOULI SN-4/2S-4/28L/18L/G446 4-Way Multiple Control Valve Bank stands as a robust solution for complex fluid control systems, offering unparalleled precision and reliability in demanding industrial environments. This sophisticated valve bank combines multiple directional control valves into a single, integrated unit, streamlining system design and reducing potential leak points. Its core advantages lie in its compact footprint, enhanced operational efficiency, and superior durability. Key technical parameters include a nominal flow rate of 28L/min and 18L/min for its respective sections, a maximum operating pressure of G446 (often indicating a specific pressure rating in MPa or bar, requiring further clarification for precise interpretation, but generally representing high-pressure capability), and a 4-way, 2-position (4/2S) configuration for each integrated valve, facilitating precise actuation of hydraulic cylinders and motors.

Product Specifications

| Feature                  | Specification                                |

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

| Model                    | SN-4/2S-4/28L/18L/G446                       |

| Type                     | 4-Way Multiple Control Valve Bank            |

| Number of Ways           | 4-Way                                        |

| Number of Positions      | 2-Position (per integrated valve)            |

| Nominal Flow Rate (Section 1) | 28 L/min                                     |

| Nominal Flow Rate (Section 2) | 18 L/min                                     |

| Maximum Operating Pressure | G446 (High Pressure Rating)                  |

| Port Size                | Varies by section; precise specification TBD |

| Actuation Type           | Solenoid, Manual, or Pilot (config. dependent) |

| Spool Type               | Standard, Closed-Center, Open-Center (config.) |

Core Features & Market Positioning

The YOULI SN-4/2S-4/28L/18L/G446 distinguishes itself through its modular design, allowing for customization to meet specific application needs. This integrated approach significantly reduces installation time and complexity compared to assembling individual valves. The use of high-quality seals and robust construction materials ensures longevity and consistent performance, positioning it as a premium component for applications where downtime is costly. Its ability to manage multiple hydraulic functions from a single manifold enhances system control and responsiveness, a critical factor in automated industrial processes.

Key Application Scenarios

This valve bank is ideally suited for a wide array of industrial applications, including but not limited to, mobile hydraulics (e.g., construction equipment, agricultural machinery), material handling systems (e.g., forklifts, conveyor systems), and manufacturing automation (e.g., robotic end-effectors, specialized assembly machines). Its dual flow rate capability allows for efficient control of both larger actuators requiring higher flow and smaller, more precise movements at lower flow rates within the same system, optimizing energy usage and operational speed. The G446 pressure rating signifies its suitability for high-performance hydraulic circuits requiring substantial force.

Practical System Integration Guidance

Integrating the YOULI SN-4/2S-4/28L/18L/G446 requires careful planning of hydraulic manifold porting and electrical connections. Ensure hydraulic lines are correctly sized to match the specified flow rates for each section to avoid cavitation and pressure drops. Electrical connections for solenoid-actuated versions must adhere to the specified voltage and current requirements, often utilizing standard industrial connectors for reliable and safe operation. Proper system flushing before and after installation is crucial to remove contaminants that could impede valve performance or damage internal components. For pilot-operated valves, ensure the pilot pressure source is stable and correctly regulated.

Operation and Risk Mitigation

Operating the YOULI SN-4/2S-4/28L/18L/G446 involves understanding the function of each spool and its corresponding actuator. Regular inspection for hydraulic leaks and monitoring of system pressure and temperature are essential for preventative maintenance. Common troubleshooting may involve checking electrical signals to solenoids, ensuring adequate pilot pressure for pilot-operated valves, and verifying the absence of internal spool binding due to contamination. In the event of unexpected system behavior, consult the detailed YOULI technical manual for specific fault code interpretations and diagnostic procedures. Always ensure that all safety guards and emergency stop procedures are in place before operating machinery controlled by this valve bank.

Scalability & Long-Term Value

The modular nature of the YOULI SN-4/2S-4/28L/18L/G446 offers significant long-term value through its potential for scalability. While this specific unit integrates multiple functions, YOULI's broader product line often allows for manifold expansion or replacement with units offering different configurations or flow capacities, facilitating system upgrades as operational demands evolve. Compatibility with standard hydraulic circuit designs and common control systems ensures that this valve bank can be integrated into existing infrastructure and future IIoT or Industry 4.0 initiatives, enabling enhanced data acquisition and remote monitoring capabilities.

FAQs

What is the maximum pressure rating of the YOULI SN-4/2S-4/28L/18L/G446 valve bank?

The valve bank is rated for G446 pressure, indicating a high-pressure capability for demanding hydraulic applications. This rating ensures robustness and reliability under significant operational loads.

Further technical documentation is required to precisely define "G446" in standard units like MPa or bar. This will confirm its suitability for specific high-pressure system designs.

Users should always consult the official product datasheet or contact YOULI directly for the exact pressure specification to ensure system integrity.

Can the flow rates of the YOULI SN-4/2S-4/28L/18L/G446 be adjusted?

The nominal flow rates of 28L/min and 18L/min are inherent design specifications for this particular model. Adjusting these core flow rates typically requires system-level modifications, not direct valve adjustments.

System design can optimize flow by using appropriately sized lines and considering pressure drops. The valve bank is designed to efficiently manage these specified flow rates.

For applications requiring variable flow control beyond these specifications, alternative YOULI valve configurations or external flow control devices may be necessary.

What types of actuators can be controlled by this 4-way valve bank?

This 4-way valve bank is ideal for controlling double-acting hydraulic cylinders and hydraulic motors. Its directional control allows for extending, retracting, or rotating functions.

The precise configuration of the spools (e.g., open-center, closed-center) dictates how the flow is managed when the valve is in neutral position, affecting actuator behavior.

By actuating different ports, the valve bank enables complex movement sequences for a wide range of industrial machinery and automation equipment.