Directional valve SMC VQ21A1-5GZ-C6-F


Pneumatic check valve brand STNC, model CV-15. The device operates in the pressure range from 0.05 ~ 1.2 MPa, with the function of allowing compressed air to pass through in only one direction (from P to A) and preventing leakage or reverse flow. The product meets ISO9001:2015 quality management standards, has a solid monoblock alloy valve body, and is an indispensable protective component for cylinders, air compressors, and industrial automation systems.
The STNC CV-15 (Pneumatic Check Valve) is an essential component in pneumatic control systems, protecting pipelines and actuators by allowing airflow in only one fixed direction (arrow direction from P → A) and blocking reverse backflow.
Manufactured on an ISO9001:2015 certified production line, the product delivers high sealing tightness and rapid open/close response, ensuring absolute safety for your machinery system.
The STNC CV-15 valve is widely applied to protect pumps and air compressors, and to stabilize pressure for cylinder assemblies. It is especially suitable for integration into JIGs, automatic screw feeders, robotic assembly lines, and multi-branch pneumatic distribution systems in factories.
📌 Important Note: Công ty TNHH Thiết bị Kỹ thuật VECTOR VINA currently supplies this product exclusively to corporate clients (B2B) or for bulk / project orders. Partners please contact us directly for technical consultation and the most preferential wholesale quote.



