Norgren L74C-4AP-QDN Air Lubricator 1/2 in Nptf

Product Description

The NORGREN L74C-4AP-QDN is a standard compressed air lubricator from the Series L74 line, designed to introduce a controlled oil fog into a compressed air system to protect downstream pneumatic components from wear and corrosion. The body is constructed from aluminum with a metal bowl, and the unit features a manual drain and an integrated sight glass for easy visual monitoring. At 8.81 inches tall and 3.15 inches wide, it connects via 1/2 inch NPTF ports and holds up to 7 ounces of oil. It is installed by pneumatic system technicians, millwrights, and maintenance professionals in industrial and commercial air distribution systems.

The L74C-4AP-QDN is suited for use in compressed air distribution lines where lubrication of downstream tools, actuators, valves, and cylinders is required. Its modular connection design allows it to be integrated into filter-regulator-lubricator (FRL) assemblies. The chloroprene seal material supports operation in environments as cold as -30 degrees F, making it appropriate for refrigerated or cold-environment service applications in both light industrial and heavier process settings.

Key Features

• Oil fog lubrication delivers a fine, consistent mist to protect downstream pneumatic components
• 1/2 inch NPTF end connections for secure, pressure-rated thread engagement
• Aluminum body and metal bowl for durable, lightweight construction
• Manual drain for controlled oil removal during maintenance
• Integrated sight glass allows visual confirmation of oil level without disassembly
• Modular connection support for use in FRL combination assemblies
• Chloroprene seals rated down to -30 degrees F for cold-environment service

Compatibility

Designed as an OEM-style replacement or new-installation lubricator for compressed air systems using 1/2 inch NPTF connections, and compatible with modular FRL assemblies in the NORGREN Series L74 product family.

Installation Notes

Installation should be performed by a qualified pneumatic systems technician or maintenance professional. Depressurize and lock out the compressed air supply before installing or servicing this lubricator. Ensure flow direction matches the arrow or inlet marking on the body. Use appropriate thread sealant on NPTF connections and verify all joints are leak-free before returning the system to service.