Overview
The SMC VHS40-N06-Z lockout valve is a manually operated 3-port pressure relief valve designed for pneumatic safety and control in industrial automation systems. This compact, manual lockout valve prevents accidents caused by residual pressure during equipment maintenance and service shutdowns. Operating across 15–150 PSI, it meets OSHA safety standards for energy isolation and provides reliable control in compressed air applications.
Key Features
- Manual 3-port design with single-action operation—simple push-and-turn handle prevents inadvertent actuation
- Padlock-securing locking holes for compliance with OSHA lockout/tagout (LOTO) procedures
- Visual flow indicator—allows operators to verify supply and exhaust status at a glance
- Pressure range 15–150 PSI with stable, repeatable relief performance
- Compact body size 40 geometry for easy integration into existing valve manifolds
Technical Specifications
- Body Size: 40
- Port Size: 3/4″ NPT (female)
- Pressure Range: 15–150 PSI
- Port Configuration: 3-port (inlet, vent, pilot)
- Actuation: Manual hand lever
- Handle Material: Metal or flame-resistant polymer (variant-dependent)
- Functional Type: Pressure relief / lockout valve
- Mounting: Threaded NPT connection
- Industry Standards: OSHA-compliant for lockout/tagout applications
Typical Applications
- Maintenance & Service: Energy isolation before personnel clean, inspect, or repair pneumatic equipment
- Cylinder & Actuator Control: Safe depressurization of air-operated hydraulic presses, clamps, and similar devices
- Machine Tool Systems: Lockable relief on secondary pneumatic circuits requiring controlled shutdown
- Industrial Automation: Compressed-air safety stations and emergency depressurization systems
Compatibility & Replacements
Compatible With
- SMC AC series air cylinder systems
- Standard 3/4″ NPT threaded pneumatic manifolds and valve blocks
- Industrial pneumatic lines rated for 15–150 PSI service
- Compressed air systems in compliance with ISO 1219 and OSHA standards
Replaces / Drop-In Replacement For
- SMC VHS40-N06A-Z (single-action relief variant)
- SMC VHS40-N06B-Z (alternative configuration)
- SMC VHS series size-40 models with 3/4″ NPT ports
Works With
- Pneumatic control systems and energy isolation lockout procedures
- OSHA-compliant lockout/tagout (LOTO) safety programs
- Compressed-air manifold assemblies with standard NPT porting
- Manual pneumatic valve circuits requiring no electrical actuation
