SMC Corporation VNB301AS 3/2 Way Pneumatic Solenoid Valve

The SMC VNB301AS is a compact two-port, two-position pneumatic process valve from SMC’s VNB family, engineered for precise flow control in automation lines. It supports external pilot solenoid actuation or a purely air-operated configuration, enabling flexible integration with existing control systems and manifolds. This valve is designed to handle air and inert gas fluids, making it suitable for general process control and vacuum-related applications across packaging, robotics, and factory automation. Key specifications include an IP65 enclosure for dust and water resistance, a small footprint suitable for dense valve banks, and multiple coil/configuration options including variants such as -20A (for example, VNB301AS-20A) to suit different electrical and mounting needs. The VNB series data indicate a broad operating pressure range up to 0.9 MPa and fast actuation, with response times in the tens of milliseconds under rated conditions, supporting high-speed sequencing in pneumatic circuits. Coil voltages vary by model, with common AC and DC configurations available to match standard control voltages in industrial automation. Common catalog references list VNB301AS-20A and related sub-models, reflecting the emphasis on external-pilot and air-operated configurations that optimize reliability in compact assemblies.