Rotary Screw Air Compressors
L Series 7 - 11 kW
Fixed & Regulated Speed
Well known in the industry for quality and reliability, CompAir continuously develops and expands the L-Series to achieve optimum performance and efficiency and maximum flexibility. The wide range of screw compressors from 7 to 11 kW includes fixed and regulated speed models, high efficiency models and is available as airstation including receiver and refrigerant dryer.
Engineering Excellence
Compressors are more than just a financial investment, they are a key component in ensuring that manufacturers, processors and operators receive consistent, high quality low cost air. The screw compression element is the heart of the compressor and therefore CompAir keeps the design and manufacture in-house, using the latest CNC rotor grinding machinery, coupled with online laser technology. The resulting reliability and performance ensure that operating costs will remain low throughout the compressor’s life.
Benefits
Compressor base mounted
Complete package including compressor, dryer and receiver
Small carbon foot print (by mounting the components on the receiver the footprint is reduced up to 55%)
In-house AirEnd
Highly efficient motors
Easy maintenance
Wide regulation range
The L Series 7 – 11 kW refers to a family of oil-lubricated rotary screw air compressors designed for industrial compressed-air applications. These compressors are widely used where a continuous and reliable supply of compressed air is needed with good efficiency, durability, and compact design.
📌 Overview
Rotary screw air compressors use a pair of helical rotors to compress air continuously. Compared with piston compressors, they are generally more reliable in heavy-duty or continuous-duty applications and produce smoother airflow with lower vibration and noise.
The L Series specifically:
Is oil-lubricated (also called oil flooded), helping with sealing, cooling, and long life.
Covers the 7 kW to 11 kW (roughly 10–15 HP) power range.
Includes fixed-speed and regulated/variable speed models to match different air demand profiles.
Can be supplied as a base unit or as an air station with a receiver tank and optional refrigerated dryer.
📌 Key Features
⚙️ Performance & Efficiency
Power range: ~7 kW to 11 kW (~10–15 HP).
Air Delivery (FAD): Typically ~0.4 to ~1.9 m³/min depending on model and pressure.
Pressure Range: Often ~5 – 13 bar (varies by configuration).
Fixed or variable speed options: Variable speed models can save energy by matching output to demand.
Oil-lubricated screw element: Provides efficient compression and longer duty life.
📦 Build & Control
Compact footprint: Saves floor space especially when configured as an integrated station with dryer and receiver.
Advanced controllers: Many models include microprocessor or digital control systems for monitoring and fault logging.
Low noise and ease of maintenance: Typical designs focus on quiet operation and simple service access.
🛠️ Typical Models & Configurations
Examples of compressors in this range (from well-known suppliers like CompAir):
7.5 kW / ~L07 – fixed or regulated speed screw compressor.
11 kW / ~L11 – larger capacity unit with similar features.
Airstation versions – compressor + receiver tank + dryer in one compact package.
(Note: The exact model names and specs can vary slightly by region and manufacturer.)
🏭 Common Applications
These compressors suit a wide range of industrial and workshop needs:
Manufacturing plants and production lines
Automotive and vehicle repair workshops
Food and beverage processing
Electronics and pharmaceutical industries
Pneumatic tools and machine operation
Painting and finishing systems
Because of their continuous duty capability and reliable performance, they’re ideal where compressed air is a critical utility.
💡 Why Choose an L Series 7–11 kW Rotary Screw Compressor?
✔ Smooth, continuous air output with less pulsation than piston compressors.
✔ Energy efficiency, particularly in regulated speed versions.
✔ Compact and robust industrial design with integrated control systems.
✔ Versatility for small to medium industrial setups.
