Overview
The SMC NVHS4500 is a manual operation 3 way pneumatic lockout valve designed for compressed air control and energy isolation applications. Rated 0.1–1.0 MPa (15–150 PSI), this valve complies with OSHA lockout/tagout (LOTO) requirements by providing a means to safely isolate pneumatic energy sources during equipment maintenance and service work. The manual lever can be secured with a padlock when in the exhaust position, preventing accidental system startup.
Key Features
- 3 port manual operation valve with lockout capability
- Pressure rating: 0.1–1.0 MPa (15–150 PSI)
- Ball valve design for reliable shutoff and isolation
- Manual lever with padlock provision for safety lockout
- Epoxy resin coating for durability
- NPT threaded ports (1/4″, 3/8″, 1/2″ available)
- Window indicator showing valve position (ON/OFF)
- Manufactured in Japan; meets OSHA Rule 29 CFR 1910.147
Technical Specifications
The following specifications apply to the SMC NVHS4500 series:
- Model: NVHS4500
- Valve Type: 3 Way Ball Valve (Manual Operation)
- Operating Pressure Range: 0.1–1.0 MPa (15–150 PSI)
- Proof Pressure: 1.5 MPa (217 PSI)
- Port Connection: NPT Threads
- Port Sizes Available: 1/4″, 3/8″, 1/2″
- Operating Temperature: 0–60°C (32–140°F)
- Control Method: Manual Lever with Lockout Provision
- Coating: Epoxy Resin
- Origin: Made in Japan
Typical Applications
- Pneumatic equipment maintenance and repair procedures (LOTO compliance)
- Compressed air system isolation and shutoff
- Industrial machinery energy lockout during service
- Textile, automotive, food processing, and general manufacturing facilities
- Cleanout operations requiring safe air source isolation
Compatibility & Replacements
Compatible With
- Standard compressed air systems operating 0.1–1.0 MPa
- Pneumatic control circuits and soft start valve assemblies (e.g., AV4000, NAF4000, NAWD4000)
- Equipment requiring OSHA lockout/tagout (LOTO) compliance
- Compressed air components with 1/4″, 3/8″, or 1/2″ NPT ports
Replaces / Drop-In Replacement For
- SMC NVHS4500-N02-X116 (1/4″ NPT variant)
- SMC NVHS4500-N03-X116 (3/8″ NPT variant)
- Other NVHS series 3 way lockout valves with matching port sizes
Works With
- SMC pneumatic components (AV series soft start valves, NAC series air cylinders, NAF filters, NAWD separators)
- Standard pneumatic tubing and NPT fittings
- Padlocks and safety hasp systems for LOTO procedures
- Pressure gauge ports for monitoring system pressure
