JBPVG32-4 Electromagnetic and Manual Multi-way Valve
2 month ago
Product details
JBPVG32-4 Electromagnetic and Manual Multi-way Valve
JBPVG32-4 is 4-section load-sensing modular directional valve, with dual control: electromagnetic proportional electric control + manual emergency handle.
Compatible with Danfoss PVG32 structure, high pressure & large flow hydraulic system.
Specifications
- Max working pressure: 315–350 bar
- Rated flow: 180–200 L/min
- Sections: 4 independent sections
- Voltage: DC12V / DC24V
- Control: Electro-proportional + Manual dual mode
- With LS load sensing, overload valve, anti-cavitation check valve
- Temp range: -20℃～80℃
- Protection: IP65
Features
- Dual redundant control, safe for automatic & emergency operation
- Load sensing energy-saving, stable multi-action coordination
- Modular stackable, easy to expand sections
- High durable cast iron body, shock resistance & long service life
Application
Aerial platforms, truck cranes, concrete pumps, mining machinery, sanitation vehicles, agricultural machinery & heavy construction equipment
I. Design Features
1. Modular Structure
• Adopts a modular design with fixed valve group dimensions and a compact structure, facilitating easy integration into hydraulic systems.
• Supports combination of up to 10 working modules, allowing flexible configuration of functional inserts (e.g., pressure compensators, buffer valves).
2. Dual Control Modes
• Electromagnetic Control: Precisely controls valve spool displacement via electrical signals for remote automation.
• Manual Control: Retains mechanical operation to enable manual intervention in case of electromagnetic system failure, enhancing system reliability.
3. Load-Sensing Technology
• Valve spool displacement is independent of load pressure, with flow determined solely by valve port opening. This ensures stable actuator speed and avoids velocity fluctuations caused by load changes.
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II. Functional Advantages
1. Flow Independence
• Flow rates for each working module remain unaffected by load pressure, enabling proportional flow distribution even during simultaneous operation of multiple actuators, minimizing mutual interference.
2. Energy Efficiency
• Hydraulic pump output pressure exceeds the highest load pressure by only a constant differential (typically ~10 bar), eliminating unnecessary throttle losses and reducing energy consumption and heat generation.
3. Synchronized Composite Actions
• Supports coordinated operation of multiple actuators, such as luffing and slewing in cranes, achieving smooth motion衔接 (transition) through precise flow allocation.
4. Safety Protection
• Integrates overload and relief valves to automatically relieve pressure when system pressure exceeds set values, preventing equipment damage.
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III. Application Scenarios
1. Construction Machinery
• Arm control in concrete pump trucks and excavators, requiring coordinated operation of multiple actuators. The JBPVG32-4 ensures accurate flow distribution and speed adjustment.
2. Municipal Vehicles
• Compression plate and pusher plate actions in refuse compaction trucks, optimizing energy efficiency via load-sensing technology to meet low-noise, high-efficiency demands.
3. Agricultural Machinery
• Hydraulic systems in self-propelled agricultural vehicles, such as header lift and conveyor belt control in combine harvesters, relying on reliable multi-way valves for complex motions.
4. Industrial Equipment
• Hydraulic drives in cranes and drilling rigs, leveraging electromagnetic control for automated operation and enhanced precision.
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IV. Technical Specifications (Example)
• Rated Flow: 130 L/min (34 GPM)
• Working Pressure:
• Service Ports: Max. 400 bar (5,800 PSI)
• Return Ports: Static/Dynamic Pressure 25/40 bar
• Control Modes: Electromagnetic proportional control (11–32 V DC), manual mechanical control
• Spool Configuration: Interchangeable spools supporting 7-step flow adjustment (e.g., 5, 10, 25, 40, 65, 100, 130 L/min)
• Functional Inserts: Pressure compensators, buffer valves, makeup valves, check valves, etc.
• Connection Types: BSP or UNF threads, compatible with various hydraulic fittings
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V. Selection and Configuration Recommendations
1. Spool Selection Based on Flow Demand:
• If required flow for a working module falls between standard steps, select the next larger step and fine-tune flow via adjustment screws.
2. Optimized Functional Insert Combination:
• Equip pressure compensators in composite circuits to ensure constant flow.
• Add buffer valves in high-frequency switching scenarios to reduce hydraulic shock.
3. System Compatibility Considerations:
• Match open-center valve groups with fixed-displacement pumps and closed-center groups with variable-displacement pumps.
• Ensure electromagnetic control voltage aligns with equipment power supply (e.g., 12V or 24V).
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