I. Product Positioning and Classification
The ZSV08-25 is ahydraulic solenoid directional valve, available in2-position, 4-way (4/2) or 2-position, 2-way (2/2) cartridge-style designs, suitable for small- to medium-flow hydraulic systems (typically with an 8mm port size). Its primary function is to control the flow direction of hydraulic fluid via solenoid activation/deactivation, enabling directional changes or operation switching for actuators (e.g., hydraulic cylinders, motors).
II. Key Technical Specifications
1. Port Size and Flow Rate:
• Port Size: 8mm, ideal for small- to medium-flow applications (e.g., compact construction machinery, agricultural equipment).
• Rated Flow: Refer to specific model manuals, but similar products (e.g., SV08 series) typically support6–23 L/min (1.6–6 gpm).
2. Pressure Ratings:
• Rated Pressure: Commonly designed for210 bar (3000 psi), with some models supporting higher pressures (e.g., 345 bar/5000 psi). Selection depends on application requirements.
• Proof Pressure: Typically 1.5× the rated pressure to ensure system safety.
3. Solenoid Characteristics:
• Voltage Options: DC12V, DC24V, AC110V, AC220V (must match control system requirements).
• Response Time: ~80 ms (energized), ~30 ms (de-energized), meeting rapid switching demands.
• Protection Class: Some models support IP69K (waterproof/dustproof) for outdoor or humid environments.
4. Internal Leakage Rate:
• ≤0.25 cc/min (5 drops/min)at maximum operating pressure, ensuring precise load holding.
III. Structural Features
1. Cartridge Design:
• Directly integrated into hydraulic manifolds, saving space and simplifying maintenance.
• Modular structure supports multi-valve combinations for complex systems.
2. Wet-Armature Solenoid:
• Coil immersed in hydraulic oil reduces noise and extends lifespan.
• External leakage-free design prevents fluid contamination.
3. High-Pressure Sealing:
• Hardened valve seats and precision machining ensure reliable sealing under high pressure.
• Suitable for harsh conditions (e.g., high temperatures, corrosive media).
IV. Application Areas
1. Industrial Automation:
• Controls hydraulic cylinder extension/retraction or motor rotation for precise positioning (e.g., CNC machines, robots).
2. Construction Machinery:
• Used in excavators, loaders, etc., for work device control (e.g., boom lifting, bucket tilting).
3. Agricultural Machinery:
• Manages hydraulic systems in tractors, harvesters, etc., for complex operations (e.g., plow adjustment, header control).
4. Other Fields:
• Marine hydraulic systems, renewable energy equipment, testing rigs, etc., requiring directional control.
V. Selection Guidelines
1. Flow/Pressure Matching:
• Choose port size and pressure rating based on system demands (e.g., ZSV08-25 for ≤210 bar, ≤23 L/min).
2. Solenoid Voltage:
• Prioritize common voltages (e.g., DC24V or AC220V) for ease of integration.
3. Environmental Adaptability:
• Select IP69K models for outdoor/humid conditions.
4. Functional Extensions:
• Optional features include manual override, waterproofing, etc., based on needs.
VI. Typical Model Comparison
【表格】
Parameter ZSV08-25 Similar Model (e.g., SV08-21)
Port Size 8mm 8mm
Rated Pressure 210 bar 345 bar
Rated Flow 23 L/min 11 L/min
Internal Leakage ≤0.25 cc/min ≤0.5 cc/min
Solenoid Voltage DC12V/24V, AC110V/220V DC24V, AC220V
Protection Class IP65 (optional IP69K) IP65
VII. Key Considerations
1. Installation & Commissioning:
• Ensure correct valve orientation to avoid reverse fluid flow.
• Verify solenoid wiring integrity before debugging.
2. Maintenance:
• Monitor hydraulic oil cleanliness to prevent valve core wear.
• Periodically energize unused valves to prevent coil moisture damage.
3. Troubleshooting:
• For slow response or leakage, check solenoid power supply, system pressure, and valve seat sealing.
