The SMC VHS30-N02-Z is a residual pressure relief valve that manually vents compressed air from pneumatic systems through its three-port design and 1/4 NPT ports. It operates across a 15-150 psi pressure range and switches between supply and exhaust positions via a rotary handle that can be locked in the closed state to block accidental re-pressurization. Installers commonly mount this unit in air preparation assemblies or machine circuits where safe depressurization is required before maintenance or tool changes.
