Norgren L73M-4GP-EPN Excelon micro fog lubricator - Closed-bowl, G1/2
Part Number: L73M-4GP-EPN
Quick Summary
The Norgren L73M-4GP-EPN Excelon micro fog lubricator delivers precise lubrication for general-purpose pneumatic systems. Engineers often struggle with maintaining a constant oil-to-air ratio across long, branching pipework. The design aligns with CE safety conformity, IP-rated protection, and SIL-ready integration where applicable, and it supports inline or modular installation. Its guarded closed-bowl design and robust materials simplify maintenance and reduce contamination risk. This combination delivers reliable lubrication performance, lowers oil consumption, and supports cost-effective, scalable automation across manufacturing lines. Designed for long-term reliability in shop air systems, it supports minimal maintenance cycles and predictable lubrication schedules. Its inline and modular installation options enable quicker upgrades and easier retrofits in existing lines.
Product Information
Extended Description
L73M-4GP-EPN Norgren: Excelon design allows in-line or modular installation | Micro-fog lubricaton for best lubrication in general purpose pneumatic applications, fine mist perfect for long and more complex pipework | 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
Closed bowl
Maximum Inlet Pressure
10 bar
Lubricator Fog Type
Micro fog
Flow
38 dm3/sec, 81 scfm
Start point
0.71 dm3/sec
Materials - Body
Aluminium
Materials - Bowl
Polycarbonate
Materials - Elastomers
Chloroprene rubber, Nitrile rubber
Range
L73M
Series
Excelon
Brand
IMI Norgren
L84M-4GP-EPN
Excelon Plus micro fog lubricator, G1/2, Guarded plastic bowl closed
Feature: Excelon micro fog lubrication technology delivers a fine mist that targets maximum coverage with minimal oil use. Business impact: lower lubricant consumption reduces running costs and waste while extending consumable life. Application: ideal for general-purpose pneumatic lines and long, complex pipework where consistent lubrication is hard to sustain. Real-world benefit: operators report steadier actuator response and fewer clogging issues when micro fog is properly dosed. Feature: Inline or modular installation provides flexible integration into existing plants. Business impact: speeds up commissioning, simplifies retrofits, and reduces downtime during changeovers. Application: supports both in-line installations and modular drops in multi-station pneumatic lines. Feature: Flow sensor maintains nearly constant oil/air ratio over a wide range of flows. Business impact: delivers predictable performance from idle to peak demand, improving cycle reliability. Application: especially beneficial in long runs and multi-branch systems where flow varies significantly. Real-world note: this stability helps avoid over-lubrication in low-flow zones and under-lubrication where demand surges. Feature: Guarded closed-bowl design protects lubricant and provides safe bowl removal for maintenance. Business impact: reduces contamination risk and minimizes splash in the workshop. Application: suited for shop-floor environments with frequent refills and routine checks. Feature: Durable materials—aluminium body, polycarbonate bowl, and compatible elastomers—deliver robust performance in industrial air systems. Business impact: high mechanical strength with corrosion resistance and good temperature tolerance. Application: suitable for general pneumatic applications across varied environments. Feature: Broad operating envelope—G1/2 port size, maximum inlet pressure 10 bar, and temperatures from -34 to 50 °C—supports a wide range of plant air installations. Business impact: reduces the need for multiple variants, simplifies procurement, and lowers stocking costs. Application: retrofit projects and new installations alike, including long pipework and inline configurations. Additional note: flow 38 dm3/sec (81 scfm) is the full-rate capability, with a start point at 0.71 dm3/sec for low-flow operation.
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FAQs
How do I install the L73M-4GP-EPN in-line or as a modular drop? The Excelon micro fog lubricator is designed for either inline mounting or modular drops to suit existing piping layouts. Use the G1/2 port, ensure the bowl guard is in place, and follow the inline assembly steps in the Installation Guide (PDF). CAD data can be downloaded for integration.
What performance specs define lubrication effectiveness for this model? The L73M-4GP-EPN Excelon works across a wide range of flow with a start point of 0.71 dm3/sec, full flow of 38 dm3/sec, and a maximum inlet pressure of 10 bar. Operating temperature ranges from -34 to 50 °C. The unit features an aluminium body and a polycarbonate bowl for durability.
Is this lubricator suitable for long pipe runs and complex piping networks? Yes. The Excelon L73M-4GP-EPN uses a precision micro fog output that maintains a near-constant oil/air ratio across wide flow ranges, making it ideal for long runs and multi-branch systems. It supports inline installation and modular drops, enabling scalable lubrication across plant layouts.
What materials are used in the L73M-4GP-EPN and how do they impact compatibility? The unit features an aluminium body, a polycarbonate bowl, and elastomers made from chloroprene rubber and nitrile rubber. This combination provides durability and resistance to mineral oils, with suitable temperature tolerance for typical factory air systems and general pneumatic lubricants.
Where can I find CAD data, datasheet, and installation guidance? CAD models are available via CAD download links in the Downloads section, including the CAD data for L73M-4GP-EPN. The datasheet PDF provides full specifications and performance curves, and the Installation Guide PDF offers step-by-step mounting instructions. These resources ensure accurate fit and straightforward maintenance.