Overview
The ARO 104104-N03 needle valve is an inline manual control valve designed for precision flow regulation in pneumatic and hydraulic systems. With a maximum pressure rating of 200 psi, 3/8″ NPT connection, and composite body that is tough and corrosion resistant, this needle valve provides dependable service in industrial automation, fluid systems, and process control applications.
Key Features
- Four-stage tapered needle design provides infinite control settings
- Color-coded micrometer and calibrated adjustment knob provide instant reference points for repeat settings
- Red locking ring prevents unintended adjustment
- Zinc-plated pipe port inserts and threaded body for panel mount installation
- Tamper-resistant wire supplied in package
- Units are threaded for easy remote panel mounting
Technical Specifications
- Model Number: 104104-N03
- Manufacturer: ARO (Ingersoll Rand)
- Connection Size: 3/8″ NPT
- Maximum Pressure Rating: 200 PSI
- Needle Design: Four-stage tapered
- Body Material: Composite (corrosion-resistant)
- Port Inserts: Zinc-plated
- Overall Length: 2-27/32″
- Port Diameter: 1/2″ NPT (inlet/outlet)
- Control Type: Manual
- Suitable Media: Compressed air, hydraulic fluids
Typical Applications
- Pneumatic system flow control and regulation
- Hydraulic manifold assemblies and test stands
- Industrial air-operated equipment and machinery
- Process control and metering applications
- Panel-mounted pressure/flow adjustment on automation equipment
- Plumbing and fluid transfer systems
Compatibility & Replacements
Compatible With
- Standard 3/8″ NPT pneumatic and hydraulic systems
- Industrial manifolds with 3/8″ NPT porting
- Panel-mounted valve stations
- Compressed air supply lines up to 200 PSI
- Hydraulic circuits (0–200 PSI)
Replaces / Drop-In Replacement For
The ARO 104104-N03 is a direct replacement for OEM applications specifying this model number. Verify compatibility with your system integrator before ordering if replacing a different manufacturer’s valve.
Works With
- 3/8″ NPT threaded fittings and adapters
- Standard manifold cavity designs (3/8″ NPT)
- Manual pneumatic/hydraulic control systems
- Low-pressure gas and fluid applications






