SMC VNB401B Process Valve

SMC VNB401B is a two-port, air-operated process valve from the VNB family, designed for precise flow control in process lines. It uses a cylinder-type pneumatic actuator and is suitable for regulating the flow of a broad range of media—including air, water, oil, gas and vacuum—in automation systems. The VNB401B-25A variant specifies a 1 MPa (about 145 psi) rating and 1 in female port connections, providing a compact option for space-constrained installations. As a 2-port (2‑way) valve, it handles direct flow regulation in the line with reliable actuation suitable for pneumatic circuits and processing applications where tight control is needed. The VNB series is recognized for handling diverse fluids across industrial settings, making this model a practical choice when a compact, robust valve is required for process control tasks.