The SMC VHS400-N04 is a manual pneumatic shut-off valve with 1/2 inch NPT ports that isolates upstream air supply and exhausts downstream pressure in compressed air systems. It operates across a pressure range of 0.1 to 1.0 MPa and supports lockout procedures during equipment maintenance or service. This valve is commonly installed in industrial automation circuits, machine tools, and air preparation assemblies where positive shut-off and safe depressurization are required.
