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RDX refrigerated compressed air dryer, max. 14 bar operating pressure, flow rate from 10 to 18 m³/min

The Comprag RDX refrigerated dryers reliably deliver dry compressed air with a constant pressure dew point of +3 °C. They protect machines and tools from corrosion and condensate. Thanks to their compact design, they can be easily integrated into existing systems. Low-maintenance aluminum heat exchangers and a hot-gas bypass ensure efficient operation. Suitable for workshops, trades and industrial applications at 10–18 m³/min.

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 |  SKU: 14310012
Prezzo di vendita €2.664,70 Prezzo normale €2.994,04
Imposte incluse Spedizione calcolata al momento del checkout.
Volumetric flow rate (m³/min)
Delivery time: approx. 4–6 business days

Questions & Help

Do you have questions about one of our products or would you like expert advice on selecting the right solution for your application?

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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

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.

Comprag RDX – Industrial refrigeration dryers for large compressed air systems

The RDX‑100, RDX‑120, RDX‑150 and RDX‑180 models from the Comprag RDX series are specially designed for large and demanding compressed air stations. They ensure a stable dew point of no more than +3 °C, prevent corrosion and condensate in systems, and are ideal for intensive continuous use in industry and manufacturing thanks to their robust construction, efficient heat exchanger and compact size.


✅ Highlights
  • Flow rates from 10.0 to 18.0 m³/min
  • Constant pressure dew point of +3 °C
  • Efficient aluminium heat exchanger with integrated demister
  • Low pressure loss and energy-optimized refrigeration circuit
  • LED display for monitoring the dew point and operating status
  • Ready for connection – ideal for heavy-duty compressor infrastructures

🔧 Technical data
Feature RDX 100 RDX 120 RDX 150 RDX 180
Item number 14310012 14310013 14310014 14310015
Flow rate (m³/min)* 10,0 12,0 15,0 18,0
Operating pressure (max.) 7 bar (16 bar)
Inlet temperature (max.) 35 °C (max. 55 °C)
Ambient temperature (max.) 25 °C (max. 45 °C)
Pressure dew point +3 °C (max. +10 °C)
Refrigerant (type) R513A / R410a
Refrigerant charge (kg) 1,10 1,40 1,80 2,10
Connection thread G 2½″
Rated voltage (Ph / V / Hz) 1 / 230 / 50 3 / 380 / 50
Power consumption (kW) 0,75 0,95 1,25 1,50

* Measured according to ISO 7183: operating pressure 7 bar, ambient temperature +25 °C, inlet temperature +35 °C.
** Values may vary slightly depending on the year of manufacture – see rating plate.


📏 Dimensions and weight

Model Length (L) Depth (D) Height (H) Weight
RDX 100 850 mm 750 mm 1070 mm 135 kg
RDX 120 151 kg
RDX 150 162 kg
RDX 180 180 kg

📐 Adjusting the air flow rate to operating conditions

Here we offer you a practical calculator for adjusting the air flow rate to individual operating conditions.

The rated capacities of our compressed air dryers are based on Standard conditions according to DIN ISO 7183 (7 bar, 35 °C inlet temperature, 25 °C ambient temperature).

Since actual systems often have different values, you can use correct dryer air flow rate into this tool determine quickly and easily. To do so, enter the air flow rate of your compressor and the corresponding Correction factors (F1, F2, F3) – the calculator shows you the required dryer air flow rate in m³/min and l/min.


Reference conditions (DIN ISO 7183): 7 bar · 35 °C (inlet) · 25 °C (ambient)
Formula: Flow rate (dryer) = flow rate (compressor) × F1 × F2 × F3

🌡️ Typical outlet temperatures (oil-lubricated rotary screw compressor)
• Compressor block > 150 °C (without cooling), approximately 80–100 °C after the oil separator
Aftercooler (compressed air outlet): usually in practice +10–15 °C above ambient → typically at 25 °C ambient ≈ 35–40 °C.


Result:

⚙️ Equipment
  • LED display for dew point, operation and faults
  • Color-coded status indicator (Green / Orange / Red)
  • Automatic hot-gas bypass control
  • Timed automatic condensate drain with adjustable intervals
  • Integrated coalescing separator in the heat exchanger
  • Energy optimization through pre-evaporation

🏭 Typical applications
  • Large-scale plants in industry, production and mechanical engineering
  • Sandblasting and coating lines
  • Automated production lines with high compressed air demand
  • Medical technology & food production
  • Systems with high requirements for drying and corrosion protection

🔄 Suitable additions
  • Desiccant dryers: for extremely dry air (down to –40 °C pressure dew point)
  • Activated carbon adsorbers: against odors and oils
  • Fine and microfilters: for high air purity
  • Compressed air receivers: 1 000 l and larger for pressure stability
  • Maintenance kits: Filters, O-rings, maintenance parts

❓ FAQ – Frequently asked questions about the RDX series
    • 1. Which dryer is right for me?
      Choose based on the flow rate – e.g., RDX‑100 for 10 m³/min, RDX‑180 for 18 m³/min.
    • 2. Why use hot-gas bypass control?
      Prevents icing and ensures continuous operation even under partial load.
    • 3. How often does maintenance need to be performed?
      Recommended: Visual inspection weekly; annual condensate drain and filter replacement.
    • 4. Are the RDX models ready for connection?
      Yes, all models are designed for a 400 V mains connection and are ready for immediate operation.
    • 5. How do I determine the drying status?
      About the LED color indicator: Green = optimal, Orange/Red = check/service.

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