Overview
The SMC VQ4401-51 is a pneumatic solenoid valve from SMC’s VQ4000 series, engineered for industrial automation and motion control. This 5-port, 3-position base mounted valve delivers stable response times and reliable airflow control in demanding environments. With IP65-compliant dust-proof construction and plug-in capability, the VQ4401-51 integrates seamlessly into existing pneumatic systems.
Key Features
- Ideal for applications requiring high speed, frequent operation, stable response time and long service life
- Innovative mounting methods allow valves to be changed without entirely disassembling the manifold
- Built-in one-touch fittings save piping time and labor
- Cylinder actuation up to ø160 with power-saving operation
- IP65-compliant dust-tight, water-jet-proof protective structure
Technical Specifications
The VQ4401-51 features effective area mm² (Cv) ratings: 2 position rubber seal 39.6 (2.2); 3 position rubber seal 21.6 – 39.6 (1.2 – 2.2). Response time for standard 1W rubber seal models ranges from 15 or less to 62 or less milliseconds. Operating temperature range for rubber seal models is -5 to 50°C. Available with coil rated voltages of 12, 24VDC; 100, 110, 200, 220VAC.
Typical Applications
- Pneumatic cylinder and actuator control systems
- Automated manufacturing assembly lines
- Machine tool applications requiring responsive valve switching
- General industrial automation requiring reliable solenoid valve operation
- Systems requiring frequent switching cycles and extended service life
Compatibility & Replacements
Compatible With
- Standard pneumatic manifold systems using 5-port valve configuration
- Rc thread porting for side-ported mounting
- Systems requiring base-mounted, plug-in solenoid valve architecture
- Industrial control systems operating at 12, 24VDC or 100-220VAC
Replaces / Drop-In Replacement For
- VQ4401-51-B02N (variant with specific coil/connector configuration)
- VQ4401-51-B03N (alternative connector variant)
- Other VQ4401 base-mounted solenoid valves with equivalent porting specifications
Works With
- SMC pneumatic manifold and base mounting systems
- Standard industrial pneumatic control circuits
- PLC-controlled pneumatic automation systems
- Systems utilizing Rc thread fittings and one-touch pneumatic connectors










