Overview
The SMC NAR4000 is a proven pneumatic air pressure regulator designed for dependable performance in industrial and commercial applications. With a pressure range of 7-120 PSI, this regulator provides consistent outlet pressure control regardless of input pressure fluctuations. Built on SMC’s modular platform, the NAR4000 integrates seamlessly with other air preparation equipment.
Key Features
- Pressure range: 7-120 PSI
- Modular design—integrates with SMC filter and lubricator units
- Locking adjustment knob prevents accidental pressure setting changes
- Internal pilot relieving design for stable regulation
- Cost-effective solution for general pneumatic applications
- Standard 1/2″ port connection
Technical Specifications
- Pressure Range: 7-120 PSI (0.05-0.85 Mpa)
- Maximum Working Pressure: 1.0 Mpa (145 PSI)
- Port Size: 1/2″ NPT
- Operating Temperature: 5–60 °C (41–140 °F)
- Working Medium: Compressed air (clean, dry)
- Valve Type: Pilot-relieving regulator
- Material: Aluminum alloy body
- Series: NAR4000
- Condition: Used, tested, fully functional
Typical Applications
The SMC NAR4000 suits a broad range of pneumatic applications where stable outlet pressure is critical:
- Machine tool air circuits and feed systems
- Pneumatic actuator and cylinder control
- General factory and workshop compressed-air networks
- Plant maintenance and on-site pneumatic adjustments
- OEM equipment pressure supply stabilization
Compatibility & Replacements
Compatible With
- SMC modular air preparation units (filters, lubricators)
- Standard 1/2″ NPT pneumatic tubing and fittings
- Industrial compressed air systems (50–145 PSI inlet)
- Pneumatic actuators, cylinders, and control devices
Replaces / Drop-In Replacement For
- Verify compatibility with your system integrator before ordering.
Works With
- SMC NAF4000 modular air filter (combines as integrated unit)
- SMC NAL4000 modular lubricator
- Standard pneumatic control circuits and circuits requiring 7-120 PSI output







