YOULI SN-3/3S-3/18L/18L/26-1L/G334 Highly Integrated Multiple Control Valve

The YOULI SN-3/3S-3/18L/18L/26-1L/G334 Highly Integrated Multiple Control Valve offers a robust solution for demanding hydraulic systems, characterized by its compact construction, low pressure drop, and extended service life. This valve boasts high efficiency and provides multiple actuation methods, including manual, pneumatic, hydraulic, and electro-hydraulic options. It supports a wide range of port and circuit valve configurations, ensuring adaptability to diverse applications.

Product Specifications

| Parameter              | Specification                                                                     |

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

| Nominal Flow Rate      | 50 L/min (13 US gpm)                                                     |

| Max. Operating Pressure| 315 bar (4600 psi) for parallel/tandem circuits, 250 bar (3050 psi) for series circuits |

| Max. Back Pressure     | 25 bar (360 psi) on outlet port T                                   |

| Fluid Temperature      | -20°C to 80°C (-4°F to 176°F) with NBR seals; -20°C to 100°C (-4°F to 212°F) with FPM seals |

| Viscosity Range        | 15-75 mm²/s operating range, min. 12 mm²/s, max. 400 mm²/s              |

| Ambient Temperature    | -40°C to 60°C (-40°F to 140°F)                                        |

Core Features & Market Positioning

The YOULI SN-3/3S-3/18L/18L/26-1L/G334 stands out in the industrial hydraulics market due to its highly integrated design and the superior precision of its hardened spool, ensuring long-term accuracy and reliability. Its competitive edge lies in its versatility, offering various operation methods and extensive customization options for ports and circuit valves, catering to specific system requirements. This positions it as a premium choice for applications demanding high efficiency and durability, supported by YOULI's decades of experience in manufacturing high-quality hydraulic components since 1975.

Key Application Scenarios

This highly integrated multiple control valve is exceptionally well-suited for a broad spectrum of mobile and industrial hydraulic applications. Its multi-functionality makes it ideal for complex machinery in sectors such as construction equipment, sanitation vehicles, and specialized industrial machinery where precise control over multiple hydraulic functions is paramount. The valve's adaptability allows for seamless integration into systems requiring detailed actuation, from agricultural machinery to advanced manufacturing equipment.

Practical System Integration Guidance

Integrating the YOULI SN-3/3S-3/18L/18L/26-1L/G334 into existing hydraulic systems is facilitated by its sub-plate mounting design, simplifying installation and maintenance. The ordering code structure, as detailed in YOULI's documentation, allows for precise configuration, specifying the number of working sections, inlet and outlet covers, port types (e.g., G334 indicating BSP ports), and spool functions. Careful consideration of fluid type, temperature, and viscosity is crucial for optimal performance and longevity, adhering to the specified operating ranges.

Operation and Risk Mitigation

Safe operation of the YOULI SN-3/3S-3/18L/18L/26-1L/G334 relies on adherence to its specified operating parameters, particularly pressure and temperature limits. While not explicitly detailing fault codes, general risk mitigation in hydraulic systems involves regular inspection for leaks, ensuring correct fluid levels and cleanliness, and periodic testing of relief valve functions. The inherent design of sectional directional control valves includes features like load check valves in each section to prevent backflow and potential hazards, contributing to overall system safety.

Scalability & Long-Term Value

The sectional nature of the YOULI SN-3/3S-3/18L/18L/26-1L/G334 offers significant scalability, allowing systems to be expanded or reconfigured by adding or changing working sections as hydraulic requirements evolve. Its robust construction and high-accuracy components ensure a long service life, providing excellent long-term value. Compatibility with various actuation methods (manual, pneumatic, hydraulic, electro-hydraulic) also ensures it can adapt to future control system upgrades, including potential integration with IIoT and digital control platforms through appropriate interfaces.

Frequently Asked Questions

What is the maximum operating pressure for the YOULI SN-3/3S-3/18L/18L/26-1L/G334 valve?

The YOULI SN-3/3S-3/18L/18L/26-1L/G334 valve supports a maximum operating pressure of 315 bar (4600 psi) for parallel or tandem circuits. For series circuits, the maximum operating pressure is rated at 250 bar (3050 psi). These figures are critical for ensuring system integrity and preventing component failure under load.

Can this valve be used with different types of hydraulic fluids?

Yes, the valve is designed for use with mineral oils within a specified viscosity range of 15-75 mm²/s. It can operate with NBR seals at temperatures from -20°C to 80°C and with FPM seals at temperatures from -20°C to 100°C. Adhering to these fluid and temperature parameters is essential for optimal performance.

What are the key advantages of the SN-3 sectional control valve series?

The SN-3 series offers a compact construction, leading to reduced installation space requirements. It also features a low pressure drop, contributing to higher system efficiency. Furthermore, these valves are known for their long service life due to features like a hardened high-accuracy spool.

How does the YOULI SN-3/3S-3/18L/18L/26-1L/G334 valve handle different actuation methods?

This highly integrated valve supports a variety of actuation methods, including manual, pneumatic, hydraulic, and electro-hydraulic controls. This versatility allows users to select the most suitable control interface based on their specific application needs and existing system infrastructure.

What is the nominal flow rate of the YOULI SN-3/3S-3/18L/18L/26-1L/G334?

The nominal flow rate for this YOULI valve is specified as 50 liters per minute (L/min), which is equivalent to 13 US gallons per minute (US gpm). This flow rate is a key parameter for hydraulic system design and component selection.

What environmental conditions can the YOULI SN-3/3S-3/18L/18L/26-1L/G334 operate in?

The valve is designed to operate within an ambient temperature range of -40°C to 60°C (-40°F to 140°F). It is crucial to ensure that the operating fluid temperature also stays within the specified limits for the chosen seal type (NBR or FPM).

What does the "Highly Integrated Multiple Control Valve" designation mean for this product?

This designation highlights the valve's ability to combine multiple control functions within a single, compact unit. The integration simplifies hydraulic circuits, reduces the number of components, and can lead to more efficient and reliable system designs.

Are there specific port options available for the G334 designation?

The "G334" in the product name likely refers to a specific port configuration, commonly indicating BSP (British Standard Pipe) threads. Detailed ordering information would specify the exact port sizes and types available for this designation.

How can the YOULI SN-3/3S-3/18L/18L/26-1L/G334 be integrated into existing systems?

Integration is facilitated by its sub-plate mounting design, allowing for straightforward installation. The valve's modular, sectional construction also enables customization to match existing hydraulic circuit layouts and functional requirements.

What are the benefits of using a sectional directional control valve like the SN-3?

Sectional valves offer excellent flexibility for system design and modifications. They allow for the addition or removal of working sections to adjust functionality, optimize performance, and adapt to changing operational demands over the life of the equipment.