Overview
The Norgren L74M-3AP-QDN is part of the Excelon® modular system of pneumatic lubricators. This micro-fog model delivers precision lubrication to compressed air systems, protecting actuators, valves, and tools from premature wear. The metal bowl with manual drain option provides durability in demanding industrial environments, while the modular design allows flexible installation in-line or on a manifold.
Key Features
- Micro-Fog Technology: Fine mist lubrication ideal for long distribution lines and complex pipework without oil carryover
- Metal Bowl Construction: Durable design with liquid level indicator for reliable long-term operation
- Manual Drain: Easy maintenance and oil level management without automatic drain valves
- 3/8″ NPT Ports: Standard port size for compatibility with common pneumatic system configurations
- Modular Installation: Excelon design allows in-line mounting or integration into modular manifold systems
- Flow Sensor: Provides nearly constant oil/air ratio across operating ranges for consistent lubrication
Technical Specifications
- Port Size: 3/8″ NPT
- Bowl Type: Metal with manual drain and liquid level indicator
- Maximum Pressure (Metal Bowl): 150 psig (10 bar)
- Micro-Fog Flow Capacity: 114 scfm (54 dm³/s) at 90 psig with 7 psi pressure drop
- Minimum Flow (Start Point): 2.5 scfm (0.94 dm³/s) at 90 psig
- Bowl Capacity: 7.0 fl oz (nominal)
- Weight: 1.70 lbs (0.77 kg)
- Operating Temperature: 0°–125°F (−20°–50°C) standard; up to 175°F (80°C) with optional extended-range bowl
- Medium: Compressed air only (dry air recommended below 35°F)
- Recommended Lubricants: Norgren ALE-29 lubricant series
Typical Applications
- Pneumatic cylinders and actuators in manufacturing and assembly lines
- Compressed air hand tools and die grinders requiring consistent lubrication
- Pneumatic valve stations and directional control valve pilot supply lines
- Air motor lubrication in automotive, food processing, and packaging equipment
- Remote pneumatic systems with long supply lines requiring fine mist distribution
- Production equipment where equipment life extension and reduced downtime are critical
Compatibility & Replacements
Compatible With
- ISO 4400-05 pneumatic valve manifold mounting stations
- Excelon® modular subplate and sandwich manifold systems
- Standard 3/8″ NPT threaded pneumatic circuits
- Compressed air supply systems operating 0–10 bar (0–150 psig)
- Pneumatic actuators, motors, and hand tools requiring micro-fog lubrication
Replaces / Drop-In Replacement For
- Norgren L74M-3AP-QEN (equivalent micro-fog model without some accessories)
- Earlier Norgren L73-series units in applications requiring higher flow capacity
Works With
- Norgren Excelon® manifold and sub-plate systems for modular pneumatic design
- Standard ISO/IEC compressed air distribution networks
- Norgren service kits (part number L74M-KIT and 4055-50) for bowl and seal replacement
- Optional mounting brackets and manifold accessories from Norgren ALE-24 series
