VQ7-8-FG-S-3: SMC 5-Port, 2-Position Solenoid Valve, DC24V, Single Solenoid, Compact Pneumatic Directional Control Valve.
2026-01-27
An expert in compact directional control for industrial automation, pneumatic actuators, and cylinder direction changes. Suitable for pneumatic systems using air or inert gases.
🔍 Model Designation and Basic Parameters
Model Structure: VQ7-8-FG-S-3
| Code | Meaning | Detailed Explanation |
|---|---|---|
| VQ7-8 | Series Code | SMC VQ7-8 series 5-port solenoid valve, ISO standard compliant |
| FG | Function Code | 2-position, single solenoid, 5-port directional valve |
| S | Number of Solenoids | 1 solenoid coil |
| 3 | Coil Rated Voltage | DC24V power supply |
| -3 suffix | Optional Feature | With indicator light, overvoltage protection, etc. (subject to actual model) |
Main Technical Parameters:
| Feature | Specification | Practical Meaning |
|---|---|---|
| Valve Type | Pilot-operated 5-port solenoid valve | ISO standard compliant, size 2/unit body |
| Body Size | 7-8 | Medium flow specification |
| Port Size | No base plate | Direct piping type |
| Operating Pressure Range | 0.15–1.0 MPa | Standard industrial pneumatic pressure |
| Maximum Operating Pressure | 1.0 MPa | Meets most industrial applications |
| Minimum Operating Pressure | 0.15 MPa | Minimum working pressure for single solenoid |
| Applicable Fluid | Air, inert gases | Industrial compressed air systems |
| Ambient Temperature | -10–60 °C | Suitable for general industrial environments |
| Fluid Temperature | -5–60 °C | Suitable for compressed air/inert gases |
| Lubrication Method | Non-lubricated | Maintenance-free, no lubrication needed |
| Protection Rating | IP65 | Dust-tight and protected against water jets |
| Shock/Vibration Resistance | 150/30 m/s² | Adapts to vibrating environments |
| Power Consumption | Approx. 1 W | Low power consumption design |
| Response Time | Approx. 40 ms | Fast response, sensitive operation |
| Sealing Method | Spool seal/Elastomer seal | Reliable sealing, minimal leakage |
| Wiring Method | DIN terminal block, with connector | Convenient wiring, good protection |
💡 Three Highlights, Solving Three Pain Points
Highlight 1: Compact 5-Port Directional Control, Saves Space
- Pain Point: Traditional directional valves are bulky, occupy more space, and have complex piping.
- Solution: The VQ7-8 series features a compact design with a narrow body width, direct piping (no base plate required), saving installation space and simplifying piping systems.
Highlight 2: Low Power Consumption, Fast Response
- Pain Point: Ordinary solenoid valves have high power consumption and slow response, affecting system efficiency.
- Solution: Approx. 1 W power consumption and approx. 40 ms response time provide low-power, fast actuation, improving system responsiveness.
Highlight 3: High Protection Rating, Adapts to Harsh Environments
- Pain Point: Ordinary solenoid valves have low protection ratings and are prone to failure in damp, dusty environments.
- Solution: IP65 protection rating (dust-tight, protected against water jets), 150 m/s² shock resistance, and 30 m/s² vibration resistance adapt to harsh industrial site conditions.
🎯 Typical Application Scenarios
- Industrial Automation Production Lines
- Cylinder direction control: Controls extend/retract of single-acting/double-acting cylinders.
- Air circuit switching for pneumatic clamps, grippers, positioning devices.
- Pneumatic control for packaging, assembly, and conveying equipment.
- Machine Tools and Processing Equipment
- Pneumatic tool changer mechanisms for CNC machines, machining centers.
- Pneumatic control for workpiece clamping, protective door opening/closing.
- Directional control for pneumatic actuators on presses, shears, etc.
- Environmental and Energy Equipment
- Air circuit control for dust collector poppet valves, pulse valves.
- Centralized directional control for compressed air stations, pneumatic control panels.
- Pneumatic actuators for exhaust treatment equipment, air compressor systems.
- Laboratory and Testing Equipment
- Directional control for pneumatic test benches, pneumatic fixtures.
- Pneumatic actuation for sample clamping, positioning devices.
- Air circuit switching for automated testing equipment.
📊 Performance Comparison: Why Choose It?
| Comparison Item | VQ7-8-FG-S-3 | Ordinary Solenoid Valve | Specialized Solenoid Valve |
|---|---|---|---|
| Valve Type | 5-port directional valve | 3-port/4-port | 5-port |
| Structural Design | Compact, direct piping | Bulky, requires base plate | Compact |
| Protection Rating | IP65 | IP54 | IP65 |
| Power Consumption | Approx. 1 W | 2–3 W | Approx. 1 W |
| Response Time | Approx. 40 ms | 50–100 ms | 30–50 ms |
| Installation Convenience | Direct piping, no base plate | Requires base plate installation | Direct piping |
| Suitable Environment | Harsh industrial sites | General environments | Harsh environments |
🛠️ Installation and Usage Notes
Installation Points:
- Install according to the arrow on the valve body. Connect the IN port to upstream and OUT ports to downstream.
- Vertical installation with the coil facing upwards is recommended for easier drainage and observation.
- Thoroughly blow out pipelines before installation to remove welding slag, metal chips, etc.
- Use brackets for secure mounting to prevent vibration. Electrical Wiring:
- Confirm power supply voltage is DC24V, paying attention to polarity.
- Use the DIN terminal block for wiring, ensuring connections are secure.
- Ensure reliable grounding for safety. Usage Precautions:
- Use clean, dry compressed air; avoid air containing oil, water, or impurities.
- Do not set pressure above 1.0 MPa to avoid overload and damage.
- Regularly check sealing condition; address leaks promptly.
- Apply anti-corrosion treatment before long-term storage. Maintenance:
- Regularly inspect filter element contamination; clean or replace as needed.
- Regularly check seal condition; replace promptly if leaking.
- Regularly check solenoid coil operation to ensure proper actuation.
- Apply anti-corrosion treatment before long-term storage.
🔄 Selection and Replacement Guide
- Need different voltage? → Select other voltage models (DC12V, AC100V, etc.)
- Need double solenoid? → Select VQ7-8-FG-D series (2 solenoid coils)
- Need different port size? → Select other port specifications for VQ7-6 or VQ7-8 series
- Need explosion-proof? → Select explosion-proof solenoid valve models
- Need higher flow? → Select larger specification models in the VQ7-8 series
📈 ROI Analysis
Direct Benefits:
- Compact design saves installation space, reducing equipment footprint.
- Low power consumption design reduces long-term electricity costs.
- High protection rating reduces downtime due to failures.
- Direct piping simplifies piping systems, lowering installation costs. Indirect Benefits:
- Improved system reliability reduces maintenance workload.
- Fast response improves production efficiency.
- Adapts to harsh environments, extending service life. Payback Period: Typically 3–6 months through reduced failures, lower maintenance costs, and saved installation time.
🎯 Procurement Suggestion: When is it Most Suitable?
Immediately choose VQ7-8-FG-S-3 if you encounter:
- Need to control the directional action of cylinders or pneumatic actuators.
- Space constraints requiring a compact solenoid valve.
- Working environment requires dust and water protection (IP65).
- Need fast response and low power consumption design.
- Want to simplify piping systems and reduce installation costs. Typical ROI Period: 3–6 months
- Through space savings, lower power consumption, reduced failures, and simplified installation, most users can recover their investment within half a year.
💎 Summary: Core Value of VQ7-8-FG-S-3
VQ7-8-FG-S-3 is not just a solenoid valve; it is:
✅ A Compact Directional Control Expert: 5-port directional valve, direct piping, saves space.
✅ A Low-Power, Fast-Response Performer: Approx. 1 W power consumption, approx. 40 ms response time.
✅ A High-Protection Durability Specialist: IP65 protection rating, shock and vibration resistant.
✅ An Industrial Site Guardian: Adapts to harsh industrial environments, long service life.
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