Overview
The Norgren T74E-4AA-P1N pneumatic lockout shut-off valve is part of the Excelon 3/2 modular valve system. This valve provides reliable control and isolation of compressed air in pneumatic systems rated up to 250 PSIG. The 1/2″ PTF (Pipe Thread Female) port configuration makes it compatible with standard pneumatic piping and manifold applications. The valve’s lockout-only design ensures safe machine shutdown and helps meet OSHA lockout/tagout (LOTO) requirements in industrial facilities.
Key Features
- 3/2 directional control valve with slide actuator design
- Locks in closed position only, blocking inlet air and exhausting downstream pressure
- 1/2″ PTF thread connection for direct integration with existing pneumatic systems
- Modular design compatible with other Excelon T74E series accessories and mountings
- Supports OSHA lockout/tagout (LOTO) compliance for machine safety
- Supplied as a lot of 2 units for redundancy or spare parts inventory
Technical Specifications
- Model Number: T74E-4AA-P1N
- Manufacturer: Norgren (IMI Hydro/Norgren Division)
- Series: Excelon T74E
- Valve Type: 3/2 Directional Control, Shut-Off/Lockout
- Actuator Type: Slide (manual)
- Port Size: 1/2″ PTF (Pipe Thread Female)
- Maximum Pressure: 250 PSIG (17 bar)
- Port Configuration: 1/2″ Inlet, 1/2″ Work, 1/2″ Exhaust (tapped)
- Mounting: Modular (compatible with T74 series manifold blocks and accessories)
- Quantity: Lot of 2 units
Typical Applications
The Norgren T74E-4AA-P1N lockout valve is widely used in machine safety and pneumatic system control applications:
- Machine lockout/tagout (LOTO) stations on production equipment and automation systems
- Pneumatic cylinder and actuator isolation during maintenance
- Emergency air supply shutoff on industrial presses, assembly lines, and packaging machinery
- Integrated into pneumatic valve manifold systems for centralized control
- Backup or replacement valve inventory for field service and maintenance teams
- OEM equipment needing modular, standardized shut-off components
Compatibility & Replacements
Compatible With
- Norgren Excelon T74E series modular valve components and manifolds
- Standard 1/2″ NPT/PTF industrial pneumatic piping and tubing
- Pneumatic cylinders and actuators rated 250 PSIG or lower
- Pneumatic control systems and valve islands using T74 base modules
- Compressed air supply systems in manufacturing and industrial automation
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or consult Norgren documentation for direct cross-reference part numbers. The T74E series is modular and may support other lockout valve variants depending on manifold configuration.
Works With
- Norgren Excelon solenoid valve modules and pressure regulators
- Modular valve mounting blocks (Norgren 4314-51, 4314-52, 4315-03, 4315-04)
- OSHA lockout/tagout compliance procedures and safety systems
- Standard compressed air infrastructure and pneumatic control networks
