DV series screw compressor, 1:1 direct drive, variable-speed controlled, 18,5 kW drive power, 2,6/2,9 m³/min flow rate, 8/10 bar max. operating pressure
The Comprag DV18.5 is a variable-speed screw compressor with 18.5 kW and a robust 1:1 direct drive. Depending on the configuration, it delivers up to 2.9 m³/min at 8 or 10 bar. Stepless adjustment of the motor speed ensures demand-based and economical compressed-air generation. Ideal for businesses with regularly fluctuating air consumption.
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| SKU :
11300045
DV series screw compressor, 1:1 direct drive, variable-speed controlled, 18,5 kW drive power, 2,6/2,9 m³/min flow rate, 8/10 bar max. operating pressure - 8 / 2.90 est en rupture de stock et sera expédié dès qu’il sera de retour en stock.
Questions et aide
Questions et aide
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Leasing & Hire Purchase
Leasing & Hire Purchase
We offer the financing options leasing and hire purchase exclusively to businesses, commercial operators and self-employed persons for selected products with a net order value of €1,000 or more. Below you will find the key differences between the two forms of financing.
Leasing
With leasing, the product is made available to the lessee for use in return for regular lease payments. The asset is recognized on the lessor’s balance sheet. Lease payments can generally be claimed as operating expenses for tax purposes. These are gross payments, and VAT is charged throughout the entire term. Once the agreed minimum lease term has expired, purchasing the product is generally possible.
Hire purchase
In economic terms, hire purchase is equivalent to an installment purchase. The product is capitalized on the hire purchaser’s balance sheet and depreciated in accordance with the official depreciation tables. Ownership of the asset transfers to the hire purchaser upon payment of the final hire-purchase installment. 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 via parcel service or via a freight forwarding company, depending on their size, weight and characteristics. 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 been expressly 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 shipment). As a result, delivery times may differ from the stated guidelines. In particular, material shortages, production delays, supply bottlenecks, force majeure or other circumstances for which we are not responsible may result in delivery delays.
Disclaimer:
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, in particular 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 additional shipping costs unless otherwise agreed.
The exact delivery time for an item can be provided individually on request, either before or after placing the order.
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. Mandatory statutory rights of the customer remain unaffected.
| SKU :
11300045
DV series screw compressor, 1:1 direct drive, variable-speed controlled, 18,5 kW drive power, 2,6/2,9 m³/min flow rate, 8/10 bar max. operating pressure - 8 / 2.90 est en rupture de stock et sera expédié dès qu’il sera de retour en stock.
Comprag DV18 – variable-speed screw compressor with 18.5 kW, 1:1 direct drive, and demand-based compressed air generation
The Comprag DV18 is designed for facilities where compressed air demand is not constant – and this is where the DV series demonstrates its greatest strength. The integrated frequency inverter continuously adjusts the compressor speed to match actual consumption. As a result, the compressor delivers only the amount of air currently required, maintains stable line pressure, 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 operates without belts or transmission stages, reduces the number of moving wear parts, and transfers the motor power directly to the compressor. The result is a powerful, easy-to-maintain, and cost-effective compressed air supply for demanding continuous operation.
Your benefits at a glance
✅ Speed control via frequency inverter – output follows the actual compressed air demand
✅ 1:1 direct drive without belt losses or regular retensioning
✅ Delivery volume of up to 2.9 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 | Item number | Control range (bar) | Delivery volume (m³/min) | Voltage / frequency | Sound pressure level | Compressed air connection |
|---|---|---|---|---|---|---|
| DV-1808 | 11300045 | 5–8 bar | 2.90 m³/min | 3 / 380–420 V / 50 Hz | 72 dB(A) | 3/4 inch |
| DV-1810 | 11300046 | 5–10 bar | 2.60 m³/min | 3 / 380–420 V / 50 Hz | 72 dB(A) | 3/4 inch |
The delivery 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) |
|---|---|---|---|---|
| DV18 | 1,300 mm | 940 mm | 1,280 mm | 480 kg |
Variable speed control – compressed air according to actual demand
A pressure sensor monitors the current system pressure. If consumption changes, the controller automatically adjusts the motor speed via the frequency inverter. Instead of continuously switching between full load and idling, the DV18 operates according to demand within its control range. The frequency inverter also reduces starting currents and relieves the motor and electrical components.
Key benefits of variable frequency control:
✔ The motor speed and delivered volume follow the actual compressed-air demand.
✔ Idling times and frequent load changes are reduced.
✔ The operating pressure remains more stable even when demand fluctuates.
✔ Soft starting reduces peak electrical currents and protects the components.
✔ This can save energy, particularly with changing load profiles.
1:1 Direct Drive – Efficient, Robust, and Low-Maintenance
The motor and screw block 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.
Key benefits of the 1:1 direct drive:
✔ Direct power transmission from the motor to the screw block via a flexible coupling.
✔ No belts, belt tensioning, or 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 block, 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 assemblies at a glance:
✔ Screw block: efficiently and continuously compresses the intake air.
✔ Electric motor: directly drives the compressor via the flexible coupling.
✔ Intake filter: protects the compressor from dust and particles in the ambient air.
✔ Air-oil vessel and separation system: separate the oil-air mixture and reduce the residual oil content.
✔ Oil filter and thermostat 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 states, 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, temperature of the air-oil mixture, 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 catalogue, 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. For dry, application-appropriately filtered compressed air, a compressed air receiver, refrigerated dryer or adsorption dryer, as well as suitable pre-filters, 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 from walls and adjacent compressors must be provided around the unit. The hot cooling air must be discharged without obstruction; electrical installation, protection and commissioning must be carried out by qualified professionals.
The maintenance schedule includes daily checks and scheduled 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 ensure operational safety and performance.
Typical applications
The Comprag DV18 is particularly suitable for industrial and trade compressed air networks with fluctuating consumption—for example in production, metalworking, CNC manufacturing, assembly, painting, blasting technology, packaging, workshops and automated systems. With a constant base-load requirement, it can also be combined with other compressors to create an energy-optimized station.
Frequently asked questions
Why is the DV series variable-speed controlled?
So that the delivered 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 transmits its power directly to the screw block via a flexible coupling. There is no belt drive or additional transmission stage.
Can the DV18 be integrated into a control room?
Yes. The v-Log controller supports MODBUS RTU and also enables group control of several compatible compressors.
Is a refrigerated dryer included?
No. The dryer, compressed air receiver and filters are designed 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 an adequate performance reserve.
Paiement et sécurité
Modes de paiement
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