DV-series rotary screw compressor, 1:1 direct drive, variable-speed controlled, 11 kW drive power, 1.3/1.5 m³/min flow rate, 8/10 bar max. operating pressure
The Comprag DV11 is a variable-speed screw compressor with an 11 kW drive motor and low-loss 1:1 direct drive. Depending on the configuration, it delivers up to 1.5 m³/min at 8 or 10 bar. Demand-based speed control reduces idle times and energy consumption. Suitable for small and medium-sized compressed-air applications with fluctuating air demand.
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| Item no.
11300025
DV-series rotary screw compressor, 1:1 direct drive, variable-speed controlled, 11 kW drive power, 1.3/1.5 m³/min flow rate, 8/10 bar max. operating pressure - 8 / 1.50 is in stock and will be shipped as soon as it becomes available again
Questions & Help
Questions & Help
Do you have questions about one of our products or would you like expert advice on choosing the right solution for your application?
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Leasing & Hire Purchase
Leasing & Hire Purchase
We offer the financing options leasing and hire purchase for selected products exclusively to entrepreneurs, businesses, and self-employed individuals, starting from a net purchase value of €1,000. Below you will find the key differences between the two forms of financing.
Leasing
Under a lease, the product is made available to the lessee for use in return for regular lease payments. The product is recognized on the lessor’s balance sheet. As a rule, lease payments can be claimed as business expenses for tax purposes. These are gross payments, and VAT is charged throughout the entire term. Once the agreed basic lease term has expired, the product can generally be purchased.
Hire purchase
In economic terms, hire purchase is equivalent to an installment purchase. The product is recognized as an asset on the hire purchaser’s balance sheet and depreciated in accordance with the official AfA depreciation tables. Upon payment of the final hire-purchase installment, ownership of the asset transfers to the hire purchaser. VAT must be paid in full with the first hire-purchase installment (a pass-through item).
Shipping & Delivery
Shipping & Delivery
We ship our goods either by parcel service or by freight forwarder, depending on their size, weight, and nature. We select the shipping method at our reasonable discretion.
The delivery times stated in the online shop are non-binding estimates, unless a binding delivery date has expressly been agreed in writing. They are based on the information available from our manufacturers, suppliers, and logistics partners at the time the order is placed.
A large proportion of the products offered are shipped directly from the manufacturer or from external central warehouses (direct shipping). As a result, delivery times may differ from the stated estimates. Delivery delays may occur particularly in cases of material shortages, production delays, supply bottlenecks, force majeure, or other circumstances for which we are not responsible.
Disclaimer of liability:
We accept no liability for delivery delays resulting from circumstances beyond our control. This applies in particular to delays caused by manufacturers, upstream suppliers, transport companies, or other third parties. Liability for any resulting damages, particularly indirect damages, consequential damages, or loss of profit, is excluded to the extent permitted by law.
Partial deliveries are permitted insofar as they are reasonable for the customer. They will not result in any additional shipping costs unless otherwise agreed.
The exact delivery time for an item can be provided individually on request, either before or after the order is placed.
Please contact us by telephone at +49 (0)2551 5030 or by email at shipping@strahltechnik-express.de.
If significant delivery delays occur, we will inform the customer without undue delay. The customer’s mandatory statutory rights remain unaffected.
| Item no.
11300025
DV-series rotary screw compressor, 1:1 direct drive, variable-speed controlled, 11 kW drive power, 1.3/1.5 m³/min flow rate, 8/10 bar max. operating pressure - 8 / 1.50 is in stock and will be shipped as soon as it becomes available again
Comprag DV11 – variable-speed screw compressor with 11 kW, 1:1 direct drive, and demand-based compressed air generation
The Comprag DV11 is designed for businesses where compressed air demand is not constant – and this is precisely where the DV series demonstrates its greatest strength. The integrated variable frequency drive continuously adjusts the compressor speed to actual consumption. As a result, the compressor supplies only the amount of air currently required, keeps the network pressure stable, and reduces unnecessary idling and switching losses.
The generously sized screw element is directly connected to the electric motor via a flexible coupling. The 1:1 direct drive requires no belts or transmission stages, reduces moving wear parts, and transfers the motor power directly to the compressor. The result is a powerful, easy-to-maintain, and economical compressed air supply for demanding continuous operation.
Your benefits at a glance
✅ Speed control via variable frequency drive – output follows the actual compressed air demand
✅ 1:1 direct drive without belt losses or regular retensioning
✅ Free air delivery of up to 1.5 m³/min – depending on the selected pressure variant
✅ Constant operating pressure with reduced load/idling changes
✅ v-Log microprocessor control with operating data, group control, and MODBUS connectivity
✅ Effective air-oil separation with a residual oil content of no more than 3 mg/m³ according to the manufacturer
✅ Sound-insulated enclosure – sound pressure level approx. 72 dB(A)
✅ Maintenance-relevant filters and separators are easily accessible
Technical data
| Model | Part number | Control range (bar) | Free air delivery (m³/min) | Voltage / frequency | Sound pressure | Compressed air connection |
|---|---|---|---|---|---|---|
| DV-1108 | 11300025 | 5–8 bar | 1.50 m³/min | 3 / 380–420 V / 50 Hz | 72 dB(A) | 1/2 inch |
| DV-1110 | 11300026 | 5–10 bar | 1.30 m³/min | 3 / 380–420 V / 50 Hz | 72 dB(A) | 1/2 inch |
The delivered air volumes are specified according to ISO 1217 and the sound pressure levels according to ISO 3744.
Dimensions and weight
| Model | Length (mm) | Depth (mm) | Height (mm) | Weight (kg) |
|---|---|---|---|---|
| DV11 | 1,190 mm | 810 mm | 1,280 mm | 425 kg |
Variable speed control – compressed air according to actual demand
A pressure sensor monitors the current system pressure. If consumption changes, the variable frequency drive automatically adjusts the motor speed. Instead of constantly switching between full load and idling, the DV11 operates according to demand within its control range. In addition, the variable frequency drive reduces starting currents and relieves the motor and electrical components.
The key benefits of variable frequency control:
✔ The motor speed and delivery volume follow the actual compressed-air demand.
✔ Idle times and frequent load changes are reduced.
✔ The operating pressure remains more stable even when demand fluctuates.
✔ The soft start reduces electrical peak currents and protects the components.
✔ This saves energy, especially with varying load profiles.
1:1 direct drive – efficient, robust, and low-maintenance
The motor and screw element are directly connected via a flexible coupling. This eliminates belt slip, belt replacement, and losses caused by transmission stages. Fewer moving parts mean less wear, direct power transmission, and high operational reliability.
The key benefits of the 1:1 direct drive:
✔ Direct power transmission from the motor to the screw element via a flexible coupling.
✔ No belts, no belt tensioning, and no belt wear.
✔ Lower transmission losses and therefore high efficiency.
✔ Less maintenance and lower ongoing service costs.
✔ Robust, smooth-running continuous operation with high operational reliability.
Design and high-quality components
Inside, an energy-efficient screw element, a reliable electric motor with thermal motor protection, an effective oil separation system, and the professional v-Log controller work together. Internal pressure losses are kept low by design, while the air-oil separation limits the residual oil content at the outlet to a maximum of 3 mg/m³ according to the manufacturer.
Key components at a glance:
✔ Screw element: compresses the intake air efficiently and continuously.
✔ Electric motor: drives the compressor directly via the flexible coupling.
✔ Intake filter: protects the compressor from dust and particles in the ambient air.
✔ Air-oil receiver and separation system: separate the oil-air mixture and reduce residual oil content.
✔ Oil filter and thermostatic valve: ensure lubrication and stable operating temperatures.
✔ Cooler and fan: reliably dissipate heat from the oil and compressed-air circuits.
✔ v-Log controller: monitors operating conditions, messages, and service intervals.
v-Log control and networking
The v-Log controller monitors automatic operation and provides the operator with key process values such as operating pressure, air-oil mixture temperature, and operating times. Multiple compatible compressors can be coordinated via the group control. For integration into a higher-level control system or control room, the controller supports MODBUS RTU.
Compressed air quality and treatment
The compressor produces oil-lubricated compressed air. According to the Comprag catalog, compressed air up to Class 4:4:4 in accordance with ISO 8573-1:2010 is possible in a suitably designed system. The quality class actually achieved depends on the downstream treatment equipment. For dry, application-appropriate filtered air, a compressed-air receiver, refrigerated dryer or desiccant dryer, as well as suitable prefilters, fine filters, and activated-carbon filters, should be provided depending on the application.
Installation, operation, and maintenance
The compressor requires a level surface suitable for its total weight, as well as adequate ventilation and air extraction. According to the operating manual, at least 1.5 m of clearance must be provided around the system from walls and adjacent compressors. Hot cooling air must be discharged without obstruction; electrical installation, protection, and commissioning must be carried out by qualified personnel.
The maintenance schedule calls for daily checks as well as staged maintenance at 500, 2,000, 4,000, and 6,000 operating hours. The operating manual, the actual operating conditions, and the controller’s maintenance indicator are always decisive. Original filters, separators, oil, and maintenance kits help maintain operational reliability and performance.
Typical applications
The Comprag DV11 is particularly suitable for industrial and commercial compressed-air networks with fluctuating consumption—for example in production, metalworking, CNC manufacturing, assembly, painting, blasting, packaging, workshops, and automated systems. With a constant base-load demand, it can also be combined with other compressors to form an energy-optimized station.
Frequently asked questions
Why is the DV series variable-speed controlled?
So that the delivered air volume automatically follows the current compressed-air consumption. This reduces idle times, keeps the network pressure stable, and can significantly lower energy costs.
What does 1:1 direct drive mean?
The electric motor transfers its power directly to the screw block via a flexible coupling. There is no belt drive or additional gear stage.
Can the DV11 be integrated into a control room?
Yes. The v-Log controller supports MODBUS RTU and also enables group control of multiple compatible compressors.
Is a refrigerated dryer included?
No. The dryer, compressed-air receiver, and filters are sized separately according to the required compressed-air quality.
Which version is right?
The 5–8 bar version delivers the higher air volume. The 5–10 bar version is intended for applications with higher network pressure. The decisive factors are actual consumption, the required minimum pressure, and sufficient performance reserve.
Payment & Security
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