Overview
The SMC VHS40-N06-Z is a manually operated pressure relief valve from the VHS40 series, engineered for industrial pneumatic and fluid power applications. This 3-port relief valve provides safe, reliable residual pressure release and system protection across a range of industrial equipment and compressed air systems.
Key Features
- Single-action manual operation: Simple turn handle mechanism for intuitive residual pressure relief
- 3-port configuration: Flexible inlet, outlet, and exhaust porting for multiple system layouts
- Lockable handle: Valve handle can be locked in position to prevent accidental operation during maintenance and safety lockout procedures
- OSHA-compliant design: Conforming to OSHA standard for worker safety and system isolation
- Visual flow indication: Designed so that the supply and exhaust status of the air flow can be checked at a glance
- Durable construction: Industrial-grade body for reliable long-term performance
Technical Specifications
| Manufacturer | SMC |
| Model Number | VHS40-N06-Z |
| Port Configuration | 3-port |
| Port Thread Type | NPT (National Pipe Thread) |
| Port Size | Ports 1 & 2: 3/4″ NPT; Port 3: 1/2″ NPT |
| Valve Type | Manual pressure relief, single-action |
| Body Material | Die-cast aluminum or PBT-reinforced composite (model-dependent) |
| Pressure Range | 15–150 PSI (0.1–1 MPa) |
| Operating Temperature | −5 to 60 °C |
| Series | VHS20 / VHS30 / VHS40 / VHS50 (size 40 body) |
| Condition | New in Box |
Typical Applications
- Pneumatic system pressure regulation and relief
- Prevention of accidents caused by residual pressure in pneumatic lines
- Energy lockout and isolation during equipment maintenance
- Safety valve integration for compressor outlet and receiver tank applications
- Industrial air preparation and FRL unit integration
- Plant maintenance and troubleshooting operations requiring safe pressure venting
Compatibility & Replacements
Compatible With
- SMC AC series modular air preparation equipment
- SMC FRL units (filter, regulator, lubricator)
- Standard compressed air and pneumatic systems with 3/4″ and 1/2″ NPT connections
- Industrial compressors and pneumatic tanks rated for 15–150 PSI (0.1–1 MPa)
- Any system requiring manual residual pressure relief and lockout capability
Replaces / Drop-In Replacement For
- VHS40-N06A-Z (similar configuration, flame-resistant PBT handle variant)
- VHS40-N06B-Z (single-action relief variant)
- Other VHS40 series valves with matching NPT port configurations
Works With
- Standard compressed air and nitrogen supply systems
- SMC pneumatic control systems and accessories
- Manual lockout / energy isolation (LOTO) procedures
- Industrial hydraulic and pneumatic circuits (0.1–1 MPa operating range)
