Screw compressors DV-series with direct drive 1:1 and frequency control capacity up to 9,6 m³/min

Screw Compressors: Design and Specifications

Version DV
Standard version on base frame

Comprag screw compressors form the basis of our reliable compressed air generation. They produce industrially compressed air of the highest quality , optionally with an integrated refrigerant dryer, achieving the demanding class 4-4-4 according to ISO 8573-1:2010.

The robust design of Comprag compressors focuses on the longevity and efficiency of its core components:

Maximum efficiency: The frequency-controlled Comprag FV and DV screw compressors

If your compressed air demand fluctuates significantly throughout the day or week, conventional fixed-speed screw compressors are no longer economical. This is where the intelligent technology of the frequency-controlled Comprag FV and DV series comes in, offering the ultimate solution for efficient energy management.

Why frequency control is the future of compressed air

Conventional screw compressors are unable to precisely adjust to the current compressed air demand. They frequently switch between full load and idle operating states . Idle operation, in particular, consumes an unnecessarily large amount of electrical energy - a huge cost trap.

The Comprag FV series (with belt drive) and the DV series (with direct drive) were specifically developed for economical operation with changing compressed air requirements.

1. Reduce operating costs - Save up to 25% on energy

Analysis of the operating costs of a compressor shows that the lion's share of the costs (approx. 78%!) is attributable to energy.

• Intelligent adjustment: The frequency-controlled Comprag screw compressors are equipped with a frequency converter . This continuously measures the current system pressure and sends a corresponding signal to the control unit.
• Variable speed: The control system precisely adjusts the speed of the electric motor to the required volume of compressed air. The Comprag compressor therefore delivers only as much power as is actually needed.
• Your savings advantage: By avoiding idle times and precisely controlling the workload, Comprag compressors with frequency control make this possible. a saving of up to 25% in electricity consumption compared to compressors without frequency control.

2. Consistent compressed air quality and optimized service life

The function of the compressor with frequency control goes beyond mere energy saving:

• Constant system pressure: Thanks to the stepless control of the airflow, the system pressure in the compressed air network can be kept at a constant, optimal value . This is essential for the quality and stability of your production processes.
• Soft start function: The frequency converter ensures very low starting currents when starting the compressor. As the graph shows, the starting currents of a frequency converter are significantly lower than those of star-delta or even direct starters. This has a positive effect on the service life of the electric motor and the entire electrical system.

3. Comprag FV and DV series: The perfect choice for dynamic processes

Choose the frequency-controlled Comprag screw compressor and benefit from a solution that intelligently adapts to your individual operating process - from Monday to Sunday, from peak load to the night shift.

• FV series: Efficient frequency control with robust belt drive.
• DV series: Maximum efficiency through a combination of frequency control and low-wear direct drive.

Secure lower operating costs and maximum supply reliability with a Comprag FV or DV screw compressor!

The advantages of your Comprag screw compressor in use

A Comprag screw compressor offers significant advantages that directly impact your operating costs and production reliability. Through our consistent focus on quality, innovation, and efficiency, we guarantee minimal energy consumption and maximum investment security.

• High energy efficiency through frequency control: The frequency-controlled Comprag FV and DV series (Variable Speed Drive, VSD) in particular precisely adjust the motor speed to the actual air demand. This eliminates costly idle times and saves up to 25% electrical energy compared to conventional compressors with fixed load cycles, especially in cases of fluctuating demand.
• Continuous operation and durability: Comprag screw compressors are designed for uninterrupted 24/7 use in industrial environments. The screw block is designed for the highest loads, ensuring an extremely long service life and optimal reliability for applications with high and constant compressed air demands in manufacturing plants or industrial facilities.
• Low noise and vibration: The optimized rotor design and robust construction - especially the low-loss and low-wear direct drive of the D-series - result in less vibration and a significantly lower sound pressure level . This improves the working environment and often allows for decentralized installation of the screw compressor close to production.
• Space-saving and ready-to-connect complete solutions: Comprag FRD complete systems on a compressed air tank, including an integrated refrigerated dryer and pre-filter, deliver clean, dry compressed air from a compact unit. These solutions are ready for immediate use, reduce installation effort, and save valuable space in your building.
• Minimal maintenance costs and high serviceability: Thanks to the well-designed, service-oriented construction, all maintenance components such as filters and oil separators are easily accessible. This drastically reduces maintenance times, minimizes downtime, and keeps the life cycle costs of your Comprag screw compressor low.
• Intelligent and safe process control: The modern controls in our Comprag screw compressors (e.g., t-Log control) monitor all relevant operating parameters in real time (pressure, temperature, maintenance intervals). They automatically optimize operation, increase process reliability, and can be integrated into your higher-level building management systems if required.
• Effective heat recovery options: A large portion of the energy supplied to the Comprag screw compressor (up to 94%) is released as heat. By using our optional heat recovery systems, you can utilize this waste heat for heating buildings or for hot water production. This further reduces your energy costs and improves your environmental footprint.