SMC VHS40-04-X1 is a residual-pressure-relief, three-port hand valve in the VHS40 family for pneumatic systems. It is manually operated and features a lock-out function to prevent unintended movement during maintenance, with a 1/2 in (04) port size. The -X1 variant denotes a red body option (made-to-order) and is typically paired with a silver handle, designed to vent or isolate residual pressure in compact, panel-mounted configurations for safety interlocks and line control in industrial pneumatics.
