Overview
The Norgren T74E-4AA-P1N is a compact, modular pneumatic lockout valve designed to meet OSHA compliance requirements for machinery safety. This Excelon 3/2 series shut-off valve provides reliable lockout capability in a 1/2″ PTF (pipe thread female) configuration. The T74E-4AA-P1N blocks inlet air flow and exhausts downstream air when closed, preventing accidental system pressurization during maintenance and repair operations.
Key Features
- 3/2 directional control—locks in closed position only for positive safety
- 250 PSI maximum rated pressure with 17 bar differential
- Modular design—integrates inline or mounts with other Excelon components
- 1/2″ PTF ports for standard pneumatic system compatibility
- Slide actuator with lockout capability—OSHA-compliant energy isolation
- Blocks inlet and exhausts downstream pressure when locked closed
Technical Specifications
- Valve Type: 3/2 directional control shut-off valve
- Port Size: 1/2″ PTF (pipe thread female)
- Maximum Pressure: 250 PSI (17 bar)
- Series: Excelon T74E modular system
- Actuator: Manual slide with lockout feature
- Flow Control: Blocks inlet, exhausts work ports
- Material: Industrial-grade pneumatic valve body
Typical Applications
- Machine tool lockout and tagout (LOTO) systems
- Pneumatic system safety isolation for maintenance
- Compressed air energy control on assembly lines
- Plant pneumatics requiring OSHA compliance
- Modular valve manifold integration
Compatibility & Replacements
Compatible With
- Excelon T74E modular pneumatic systems
- Standard 1/2″ NPT/PTF pneumatic networks
- Compressed air up to 250 PSI
- Industrial pneumatic tools and actuators
Replaces / Drop-In Replacement For
- Other Norgren T74E-4AA series lockout valves in 1/2″ PTF configuration
- Verify compatibility with your system integrator before ordering.
Works With
- Excelon modular valve bases and accessories
- Standard pneumatic hose and tubing fittings
- Manual and solenoid pilot actuators (with appropriate manifold)
- Industrial pneumatic controls and safety systems
