The compact Electric Sectional Valve from Buyers Products features a compact design. Its electrical controls allow you to mount a switch in the cab and control the valve remotely. It's great for smaller trucks and plow trucks. The 12V valve is rated to a max flow of 11 GPM. It features a simple on/off (non-proportional) flow. It can handle a maximum rating of 4300 PSI when the main relief is set at a higher pressure. The main relief is adjustable from 1300 to 3000 PSI (factory preset at 2150 PSI ). Two additional adjustable port reliefs -- angle and dump -- are available to provide protection for the specific job. The valve has cylinder spools, and features load hold check in the neutral position, precision-machined and ground spools, and easily replaceable spool end seals. Additional configurations are available. Please contact Customer Service for further information.
Specifications
| Amps per Coil | 2.500 |
|---|---|
| Coil Voltage | 12 |
| Electrically Operated (y/n) | Yes |
| Inlet Port Size | 1/2 SAE ORB (-8) |
| Main Relief Setting | 1300-3000 (Set at 2150) |
| Maximum Flow Rate | 11 |
| Maximum Pressure | 3600 |
| Number of spools | 1 |
| Out Port Size | #8 |
| Outlet Port Size | 1/2 SAE ORB (-8) |
| Port Relief Angle | 1900-4300 (Set at 2150) |
| Port Relief Dump | 400-1900 (Set at 600) |
| Port reliefs ( Y/N) | Yes |
| Port Type | SAE |
| Power Beyond (y/n) | Yes |
| Relief (Y/N) | Yes |
| Spool Action 1 | Power Up/Power Down - 2 Port Relief |
| Work Port Size | 1/2 SAE ORB (-8) |
Advanced Technical Overview: Electric Sectional Valve 4-Way 2-Relief Port/PB
The Electric Sectional Valve by Buyers Products represents a state-of-the-art hydraulic control component engineered for precision, durability, and operational flexibility within demanding mobile equipment applications. This comprehensive description delves into the intricate technical specifications, functional principles, and inherent advantages of this advanced hydraulic valve, providing a thorough understanding for engineers, system designers, and maintenance professionals.
Core Design Philosophy and Compact Form Factor
Designed with a focus on efficiency and integration, this electric sectional valve boasts a highly compact footprint, making it exceptionally well-suited for installations where space is at a premium, such as smaller utility vehicles, municipal service trucks, and specialized agricultural machinery. The designation "sectional" refers to a modular design philosophy often employed in hydraulic valves, allowing for individual valve sections to be assembled to meet specific application requirements. While this particular model is configured with a single spool, its design principles reflect the robustness and adaptability inherent in sectional valve systems, indicating potential for integration within more complex hydraulic manifolds or as a standalone, high-performance unit.
The compact design minimizes overall system weight and packaging requirements, contributing to improved vehicle dynamics and fuel efficiency in mobile applications. Despite its reduced size, the valve's robust construction ensures reliable performance under rigorous operational conditions, a hallmark of Buyers Products' engineering standards. The ability to mount the valve remotely from the operator's cab, facilitated by its electrical controls, further enhances design flexibility, allowing for optimal placement within the chassis to protect against environmental contaminants and mechanical stress, while keeping the operator isolated from direct hydraulic lines.
Precision Electro-Hydraulic Control System
At the heart of this valve's advanced functionality is its sophisticated electro-hydraulic control system. Operating on a standard 12V DC power supply with a nominal coil current of 2.5 Amps per coil, the valve's solenoids provide precise and rapid actuation of the internal spool. This electrical interface permits seamless integration with modern vehicle electrical systems and advanced control units, including CAN bus networks where appropriate, although the valve itself offers a straightforward on/off, non-proportional flow characteristic. This non-proportional control simplifies system design for applications requiring discrete hydraulic actions, such as extending/retracting cylinders or engaging/disengaging hydraulic motors at full speed.
The benefits of electrical control are manifold. Remote operation eliminates the need for bulky mechanical linkages or lengthy hydraulic pilot lines, reducing installation complexity, minimizing potential leak points, and enhancing operator ergonomics and safety. Operators can activate hydraulic functions from a comfortable and safe position within the cab, improving situational awareness and reducing fatigue during extended operational periods. Furthermore, the electrical signal transmission offers superior noise immunity compared to mechanical systems, ensuring reliable command execution even in electrically noisy environments common in mobile equipment.
Hydraulic Circuitry: 4-Way Spool Configuration
This valve is configured as a 4-way, 3-position valve with a cylinder spool, a fundamental component in controlling double-acting hydraulic cylinders or reversible hydraulic motors. The "4-way" designation indicates that the valve possesses four primary ports: a pressure inlet (P), a tank return (T), and two work ports (A and B). In its neutral (center) position, the spool typically blocks all ports or connects the work ports to tank, preventing unintended actuator movement and holding the load in place. This valve explicitly features a "load hold check in the neutral position," a critical safety and performance enhancement. This internal check valve mechanism prevents hydraulic fluid from draining out of the cylinder or motor when the spool is in neutral, thereby preventing load drift and ensuring that the actuator remains securely positioned even under static load conditions.
When the spool is actuated to one side, pressure fluid from port P is directed to work port A, while fluid from work port B is simultaneously returned to tank port T, causing a cylinder to extend or a motor to rotate in one direction. Conversely, actuation to the other side directs pressure to work port B and returns fluid from work port A to tank, initiating the opposite movement. The "Power Up/Power Down" spool action implies full control over both directions of movement, commonly required for applications like snowplow lift/lower functions or dump body actuation.
The precision-machined and ground spools are manufactured to exceptionally tight tolerances, ensuring minimal internal leakage (spool bypass) and exceptionally smooth, low-friction operation. This precision contributes directly to the valve's efficiency, reducing heat generation, and enhancing the responsiveness and accuracy of hydraulic functions. Coupled with easily replaceable spool end seals, this design choice ensures a long operational life and simplifies maintenance, allowing for cost-effective servicing and maximizing uptime.
Comprehensive Pressure Management and Relief System
Effective pressure management is paramount in any hydraulic system to prevent component damage, ensure safe operation, and optimize performance. This valve incorporates a multi-tiered relief valve architecture, providing comprehensive protection against overpressure events.
Main Relief Valve
The primary system protection is provided by the main relief valve, adjustable within a range of 1300 to 3000 PSI, with a factory preset of 2150 PSI. This valve is situated in the inlet section and is designed to relieve excess system pressure back to the tank, safeguarding the pump, hoses, and other downstream components from exceeding their maximum rated pressure. When system pressure surpasses the set point, the main relief valve opens, diverting hydraulic flow away from the work circuit. This prevents catastrophic failures and significantly extends the lifespan of the entire hydraulic system. The ability to adjust this setting provides crucial flexibility for system designers to fine-tune the valve's performance to match the specific requirements and pressure capabilities of the associated pump and actuators.
Dual Adjustable Port Relief Valves
Beyond the main relief, this valve features two independent, adjustable port relief valves, specifically designated for "Angle" and "Dump" functions. These port reliefs are strategically placed to protect individual work ports (A and B) from transient pressure spikes that may occur due to external forces acting on the actuator or sudden deceleration of a moving load (e.g., impact loads on a snowplow blade or sudden stops of a dump body). Unlike the main relief, which protects the entire system, port reliefs offer localized protection, allowing higher pressures to be briefly tolerated at a specific port without affecting the overall system pressure.
- Port Relief Angle: Adjustable from 1900 to 4300 PSI, factory set at 2150 PSI. This high-pressure setting is ideal for applications requiring robust resistance to external forces, such as the angling mechanism of a snowplow or a vehicle-mounted blade, where impacts with obstacles or heavy material can generate significant shock loads. The ability to reach up to 4300 PSI indicates exceptional resilience for these specific functions, surpassing the general system pressure rating.
- Port Relief Dump: Adjustable from 400 to 1900 PSI, factory set at 600 PSI. This lower-pressure setting is suitable for functions like the dumping action of a truck bed or tailgate, where a controlled, lower pressure relief might be desired to prevent damage to the mechanism during full extension or retraction, or when encountering a hard stop. The lower preset provides a sensitive protection for functions that might not require the extreme pressure resistance of an "angle" function, ensuring components are protected without unnecessary wear.
The presence of two dedicated, adjustable port reliefs significantly enhances the versatility and protective capabilities of this valve, allowing for tailored pressure management for different hydraulic functions controlled by the same spool. This level of precise protection is a critical factor in maximizing equipment longevity and minimizing downtime due to component failure.
Flow and Pressure Performance Characteristics
With a maximum flow rate of 11 GPM (Gallons Per Minute), this valve is perfectly matched for hydraulic systems typically found in smaller commercial vehicles and light-duty industrial applications. This flow rate dictates the speed at which hydraulic actuators will operate, making it suitable for tasks requiring moderate speeds and controlled movements. The valve is designed to handle a maximum system pressure of 3600 PSI, which, combined with the higher transient pressure tolerance of the port reliefs (up to 4300 PSI for the Angle function), underscores its robust design and capability to operate in demanding high-pressure environments. This specification is crucial for ensuring the valve's structural integrity and long-term reliability under continuous operational stress.
The combination of adequate flow capacity and high-pressure rating ensures that the valve can deliver sufficient power and speed for its intended applications, from lifting and lowering snowplows to operating various auxiliary attachments. Careful consideration of pump output and actuator sizing in conjunction with these flow and pressure specifications will optimize overall system performance.
Advanced Porting and Power Beyond Functionality
The valve utilizes industry-standard SAE ORB (O-Ring Boss) fittings for all its main ports: inlet (P), outlet (T), and work ports (A and B). Specifically, all listed port sizes are 1/2 SAE ORB (-8). SAE ORB connections are widely recognized for their superior sealing capabilities, providing a robust, leak-free connection that is highly resistant to vibration and pressure fluctuations. This type of fitting is easier to assemble and disassemble compared to pipe threads, reducing installation time and maintenance effort, while significantly minimizing the risk of hydraulic fluid leaks, which are both environmentally detrimental and a safety hazard.
A key feature of this valve is its "Power Beyond" (PB) capability. This function allows hydraulic fluid, after passing through this valve and being returned to the Power Beyond port, to be directed to another hydraulic component or valve downstream, rather than immediately returning to the tank. The Power Beyond port effectively maintains system pressure for subsequent components in a series circuit. This is particularly advantageous in mobile applications where multiple hydraulic functions need to be powered by a single pump. Instead of requiring a separate pump or a complex parallel circuit, Power Beyond enables a simpler, more efficient series connection of hydraulic valves, optimizing the use of available pump flow and pressure. This reduces overall system complexity, component count, and potential points of failure, making for a more streamlined and cost-effective hydraulic architecture.
Applications and Operational Advantages
The Electric Sectional Valve 4-Way 2-Relief Port/PB is engineered to excel in a diverse range of mobile hydraulic applications, with particular emphasis on:
- Snowplow and Spreader Trucks: Ideal for controlling the lift, lower, angle, and dump functions of snowplows, sand/salt spreaders, and tailgate spreaders. The robust relief settings specifically cater to the high shock loads experienced during snow removal operations.
- Utility and Municipal Vehicles: Applicable for controlling various attachments such as small cranes, winches, tool circuits, or auxiliary implements on utility maintenance trucks, street sweepers, and refuse vehicles.
- Compact Construction Equipment: Suitable for mini excavators, skid steers, and compact track loaders, operating buckets, grapples, augers, or other hydraulic tools.
- Agricultural Equipment: Can be used for controlling small implements, seeders, sprayers, or other hydraulic functions on compact tractors and specialized farm machinery.
The operational advantages translated from its technical features include:
- Enhanced Safety: Remote electrical control keeps operators safely in the cab, away from moving parts and hydraulic lines. Load hold checks prevent unintended movement, enhancing safety during lifting or positioning tasks.
- Improved Productivity: Responsive electrical actuation allows for quick and precise control of hydraulic functions, reducing cycle times and increasing overall work efficiency.
- System Reliability and Longevity: A multi-tiered relief valve system provides comprehensive protection against overpressure and shock loads, safeguarding critical hydraulic components and extending the lifespan of the entire system.
- Ease of Integration: Compact design, standard SAE ORB porting, and 12V electrical interface simplify installation and integration into new or existing hydraulic systems.
- Versatility: Power Beyond capability allows for efficient hydraulic circuit design, enabling multiple functions to operate from a single pump.
- Durability: Precision-machined components, robust construction, and high-pressure ratings ensure reliable operation in harsh environmental conditions typical of mobile equipment.
Conclusion and Support
The Electric Sectional Valve 4-Way 2-Relief Port/PB from Buyers Products stands as a testament to advanced hydraulic engineering, offering a compelling blend of compact design, robust construction, precise electrical control, and comprehensive system protection. Its integrated main and port relief valves, coupled with Power Beyond functionality, make it an exceptionally versatile and reliable choice for a wide array of demanding mobile hydraulic applications. From enhancing operator safety and comfort to maximizing equipment productivity and lifespan, this valve is engineered to deliver superior performance in the field.
Understanding that specific applications may require unique configurations or tailored solutions, Buyers Products maintains a commitment to customer support. For inquiries regarding additional configurations, detailed performance curves, integration guidelines, or any specific technical requirements, customers are encouraged to contact our dedicated Customer Service team. Our hydraulic specialists are prepared to provide expert guidance to ensure optimal system design and operational success.
