Norgren L74C-4GP-QPN Oil Fog Lubricator - Guarded Bowl
Part Number: L74C-4GP-QPN
Quick Summary
The Norgren L74C-4GP-QPN oil fog lubricator provides precise inline lubrication for pneumatic systems in manufacturing environments. Maintaining consistent lubrication across varying line speeds can be challenging, leading to uneven wear and reduced cylinder life. Industry-standard considerations include CE compliance and IP-rated guarding; verify the datasheet for SIL safety compatibility related to your application. These Excelon lubricators support inline or modular installation, enabling faster line upgrades and reduced downtime, while delivering a predictable oil-to-air ratio that improves tool life and process stability. For procurement and maintenance teams, this translates to lower total cost of ownership and greater process reliability.
Product Information
Extended Description
L74C-4GP-QPN Norgren: Excelon design allows in-line or modular installation | Oil fog lubrication is ideal when heavier lubrication is required over short distances such for large bore clyinders, air motors and air tools | Flow sensor provides a nearly constant oil/air ratio over a wide range of flows
Medium
Compressed air
Operating Temperature
-34 ... 50 °C, -30 ... 122 °F
Port Size
G1/2
Drain Type
Manual
Maximum Inlet Pressure
10 bar
Lubricator Fog Type
Oil fog
Flow
91 dm3/sec, 193 scfm
Start point
0.94 dm3/sec
Materials - Body
Aluminium
Materials - Bowl
Polycarbonate
Materials - Elastomers
Chloroprene rubber, Nitrile rubber
Range
L74C
Series
Excelon
Brand
IMI Norgren
T74T-4GA-P1N
Excelon 3/2 modular system shut-off valve, G1/2
4314-51
Quikclamp
4314-52
Quikclamp with wall mounting bracket
T40B1800
Quietaire sintered bronze silencer, R1/8
L84C-4GP-EPN
Excelon Plus oil fog lubricator, G1/2, Guarded plastic bowl closed
Inline or modular installation is supported by the Excelon L74C-4GP-QPN, enabling retrofit of existing lines and flexible plant layouts. The business impact is reduced installation time and minimized downtime, improving overall line productivity and uptime in automated environments. Oil fog lubrication provides heavier lubrication over short distances, which protects large bore cylinders, air motors and air tools from accelerated wear and tear while maintaining smooth actuation in demanding cycles. The flow sensor maintains a nearly constant oil/air ratio over a wide flow range, delivering consistent performance and reducing waste from over- or under-lubrication in variable-speed lines. With a G1/2 port and a maximum inlet pressure of 10 bar, this unit integrates easily into standard compressed-air networks while supporting simple maintenance through a manual drain. The aluminium body and polycarbonate bowl reduce weight without compromising durability, and the guarded bowl design enhances operator safety in busy production rooms. Accessories such as the Excelon T74T-4GA-P1N shut-off valve, Quikclamp mounting options, and a Quietaire silencer simplify installation and reduce noise, supporting compact panel layouts and clean, compliant installations. The L74C range embodies the Excelon approach to modular, reliable lubrication, enabling scalable automation upgrades with predictable total cost of ownership.
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FAQs
The L74C-4GP-QPN supports inline installation and can be integrated into modular systems using the Excelon mounting options. With a G1/2 port, a standard 10 bar air supply, and a manual drain, it is straightforward to mount on panels or adjacent to tools. Quikclamp mounting (4314-51/4314-52) simplifies secure attachment, while the T74T-4GA-P1N shut-off valve offers quick isolation during maintenance or line changes.
Key performance specs include oil fog lubrication at a flow of 91 dm3/sec (193 scfm), with a start point of 0.94 dm3/sec. The unit handles compressed air at temperatures from -34 to 50 °C (-30 to 122 °F) and supports a maximum inlet pressure of 10 bar. The medium is compressed air, and the bowl is guarded for safety, with a manual drain for maintenance.
Yes. The Excelon L74C-4GP-QPN is designed for heavier lubrication over short distances, making it appropriate for large bore cylinders, air motors, and air tools. The oil fog method provides effective lubrication where higher oil load is required, while the flow sensor helps maintain a consistent oil-to-air ratio across varying line conditions.
For streamlined installation, pair the lubricator with Excelon T74T-4GA-P1N modular shut-off valves and Quikclamp mounting (4314-51 or 4314-52). A Quietaire silencer (T40B1800) can reduce noise in busy environments, and the guarded plastic bowl design enhances operator safety during routine maintenance and inspection.
Regular manual drain operation is essential to purge condensate and maintain consistent lubrication performance. Periodic inspection of elastomer seals (chloroprene and nitrile rubbers) and the aluminium body for signs of wear or corrosion is recommended. Monitor flow sensor output for drift and verify that the inlet pressure remains within the 0–10 bar range to preserve the intended oil-to-air ratio and reliability.