Norgren L74M-4AP-QDN Air Lubricator 138 Cfm 1/2 in Nptf

Product Description

The NORGREN L74M-4AP-QDN is a standard compressed air lubricator designed to introduce oil mist into pneumatic system airflow, protecting downstream components such as valves, actuators, and air tools from wear and friction. Part of the Series L74 line, this unit operates as a micro fog lubricator and features an aluminum body with a metal bowl, a 1/2 inch NPTF port, and a rated capacity of 138 CFM. The manual drain and modular connection make it practical for inline FRL assemblies. It is installed by industrial maintenance technicians and pneumatic system integrators working on compressed air distribution lines.

This lubricator is suited for industrial and commercial compressed air systems where consistent oil delivery to pneumatic tools and actuators is required. The 1/2 inch NPTF end connections allow direct integration into standard pipe fittings. The modular connection feature supports use in FRL (filter-regulator-lubricator) combinations. The unit functions within a minimum working temperature of -30 degrees F, making it viable in cold storage and outdoor enclosure applications. The included sight glass allows quick visual confirmation of oil flow without disassembly.

Key Features

• 138 CFM airflow rating for medium to high-volume pneumatic circuits
• 1/2 inch NPTF end connections for standard compressed air piping
• Aluminum body construction for corrosion resistance and light weight
• Micro fog lubrication delivers fine oil mist for thorough downstream coverage
• Modular connection supports inline FRL assembly configurations
• Includes sight glass for visual oil flow verification without system shutdown
• Manual drain for controlled oil bowl servicing

Compatibility

Designed as an OEM-style replacement or direct-fit component for standard industrial compressed air FRL systems using 1/2 inch NPTF connections and requiring micro fog lubrication.

Installation Notes

Installation should be performed by a qualified industrial mechanic or pneumatic systems technician. Depressurize and lock out the compressed air supply before installation or servicing. Mount with airflow direction matching the arrow cast on the body. Ensure all NPTF connections are properly threaded and sealed to prevent air leaks before returning the system to service.