SMC Corporation VHS40-N06-Z Pressure Relief Valve 3-Port

The SMC VHS40-N06-Z is a compact residual‑pressure relief valve in the VHS40 family that provides controlled venting through a 3‑port IN‑OUT‑EXH configuration. It uses a 3/4 in nominal port size and a die‑cast aluminum body designed for durability in pneumatic systems. It is rated for residual pressure relief in the 0.1 to 1 MPa range, with a proof pressure up to +1.5 MPa, enabling effective overpressure protection for lines and actuators after valve actuation. The unit measures about 110 mm in length and employs a spool‑based mechanism to route flow between ports in a two‑position arrangement, making it suitable for compact installations in automation equipment. Typical applications include protecting cylinders, actuators, and pneumatic valves in manufacturing equipment, robotics end‑effectors, and other automation systems where residual pressure must be safely exhausted post‑actuation.