Sany 75 Multi-way Directional Valve
4 week ago
Product details
1. Product Overview
TheSany 75 Multi-way Directional Valve (HVS-18-08-AL320-BE013)is a hydraulic multi-port control valve designed by Sany Heavy Industry for 75-ton construction machinery (e.g., excavators, cranes). It centralizes control over hydraulic circuit direction, flow rate, and pressure distribution, enabling precise coordination of composite actions (e.g., boom, arm, and bucket movements).
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2. Model Code Breakdown (HVS-18-08-AL320-BE013)
• HVS: Valve series code (may denote "Hydraulic Valve System" or Sany’s internal designation).
• 18: Main spool port diameter (mm), affecting maximum flow capacity.
• 08: Number of working ports (e.g., 8 interfaces including P, T, A, B).
• AL320:
• AL: Material or surface treatment code (e.g., aluminum alloy valve body).
• 320: Rated operating pressure (bar, equivalent to 32 MPa).
• BE013:
• BE: Functional expansion module (e.g., electromagnetic control or pressure compensation).
• 013: Production batch or version number.
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3. Core Functions
• Multi-port directional control: Integrates 4–6 independent directional valves for simultaneous control of multiple actuators (e.g., hydraulic cylinders, motors).
• Flow regulation: Achieves stepless speed adjustment via throttling or proportional valves.
• Pressure compensation: Some models support Load Sensing (LS) for automatic balancing of pressure demands across actuators.
• Safety protection: Built-in relief valves prevent system overload; optional burst valves included in certain configurations.
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4. Technical Specifications
【表格】
Parameter Value
Rated Pressure 320 bar (32 MPa)
Peak Pressure 350 bar (35 MPa)
Nominal Flow Rate 180–250 L/min (model-dependent)
Operating Temperature -20°C to +80°C
Valve Body Material Aluminum alloy (AL) or cast iron
Control Method Manual/hydraulic/electromagnetic (optional)
Port Type SAE/BSPP/METRIC (configurable)
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5. Structural Features
• Modular design: Main valve body and functional modules (e.g., pressure reducers, check valves) are detachable for easy maintenance.
• High sealing performance: Uses O-rings + composite seals with leakage ≤5 ml/min.
• Contamination resistance: Filtration requirement ≤25 μm, suitable for harsh environments.
• Lightweight: Aluminum alloy body reduces weight by 30%, ideal for mobile equipment.
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6. Applications
• Excavators: Controls composite movements of the boom, arm, bucket, and swing motor.
• Cranes: Synchronizes luffing, telescoping, and slewing mechanisms.
• Loaders: Coordinates lifting, tilting, and steering systems.
• Drilling rigs: Precisely controls feed, rotation, and clamping devices.
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7. Selection & Matching Guidelines
• Pressure matching: Ensure system maximum pressure ≤ valve rated pressure (320 bar).
• Flow matching: Select port diameter based on pump flow (e.g., 18 mm for 250 L/min).
• Control method:
• Manual valves: Cost-effective for fixed operations.
• Solenoid valves: Require PLC or controller for automation.
• Environmental adaptability:
• Cold regions: Use low-temperature hydraulic oil (-30°C startup).
• Dusty environments: Add valve body shields or pre-filters.
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8. Common Faults & Maintenance
Fault Symptoms
• Slow operation: Stuck spool or internal leakage.
• Insufficient pressure: Relief valve set too low or spring failure.
• High oil temperature: Blocked throttle or inadequate cooling.
Maintenance Tips
• Regular cleaning: Flush valve interior with hydraulic oil every 500 hours.
• Seal replacement: Inspect and replace O-rings every 2,000 hours.
• Parameter calibration: Verify relief valve pressure settings annually.
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Ningbo Hengnuo Hydraulic Drive Co.,Ltd
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