SMC VHS30-N03-Z Lockout Valve 3-Way 15-150 PSI

SMC VHS30-N03-Z is a lockable, three-port pressure-relief valve in the VHS series, engineered for pneumatic systems to vent residual pressure safely during maintenance or service and to prevent accidental actuation when work is being performed. The valve features 3/8-inch NPT ports, an aluminum die-cast body (body size 30), and a nominal operating range of 15 to 150 psi (0.1 to 1 MPa), with an approximate weight of 0.70 lb, and it uses standard NPT threading with a PSI-printed nameplate. Its lockable design provides a mechanical interlock to keep the valve in a safe position during servicing, reducing the risk of unexpected re-pressurization in pneumatic lines. SMC lists VHS30-N03-Z as replaced by VHS30-N03-Z-D in its catalogs, indicating the -D variant is the current production option when sourcing new units. Typical applications include depressurizing lines and ensuring safe workflows during maintenance of pneumatic circuits in automation, manufacturing, and equipment service environments.