The SMC Corporation VHS50-N10B-Z single-action pressure relief valve manually exhausts residual compressed air from pneumatic circuits through its 1-inch NPT ports once upstream pressure is isolated. Operators twist the handle to open the exhaust path and can lock it in the open position to keep the system vented during maintenance or service. The valve body mounts directly into air preparation units or standalone lines, providing a reliable way to confirm zero pressure before work begins on actuators, filters, or regulators.
