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Comprag Compressed Air Refrigeration Dryer RDX, Max. 16 bar Operating Pressure, Flow Rate from 0.4 to 1.8 m³/min

The Comprag RDX refrigerant 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 hot gas bypass ensure efficient operation. Suitable for workshops, crafts, and industry at 0.4–1.8 m³/min.

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Comprag  |  SKU: 14310000
Sale price €642,87 Regular price €722,33
Tax included Shipping calculated at checkout.
Volume flow (m³/min)
Delivery time approx. 4-6 working days

Questions & Help

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

No problem, give us a call! Tel. +49 (0) 2551 5030

Send us an email! shop@strahltechnik-express.de

Use our online chat or the contact form

Leasing & Hire Purchase

We offer exclusively for entrepreneurs, traders, and self-employed individuals financing options leasing and hire purchase for selected products starting from a net goods value of €1,000. Below you will find the essential differences between both financing forms.

Leasing

In leasing, the product is made available to the lessee for use against payment of regular leasing installments. The accounting is done by the lessor. The leasing installments can usually be claimed as business expenses for tax purposes. These are gross installments, and value-added tax is incurred throughout the entire term. After the agreed basic rental period, acquisition of the product by purchase is generally possible.

Hire Purchase

Hire purchase is economically equivalent to a installment purchase. The product is activated in the balance sheet of the hire purchaser and depreciated according to the official depreciation tables. Upon payment of the last hire purchase installment, ownership of the object transfers to the hire purchaser. The value-added tax must be paid in full with the first hire purchase installment (pass-through item).

Shipping & Delivery

The shipping of our goods depends on size, weight, and nature, either via parcel service or via freight forwarding. The choice of shipping method is made by us at our discretion.

The delivery times indicated in the online shop are non-binding estimates, unless a binding delivery date has been expressly confirmed in writing. They are based on the information available from our manufacturers, suppliers, and logistics partners at the time of the order.

A large part of the products offered is shipped directly from the manufacturer or from external central warehouses (direct shipping). As a result, delivery times may differ from the specified benchmarks. In particular, material shortages, production delays, delivery bottlenecks, force majeure, or other circumstances beyond our control may lead to delivery delays.

Disclaimer:

We accept no liability for delivery delays caused by circumstances that are outside our control. This particularly applies to delays caused by manufacturers, suppliers, transport companies, or other third parties. Liability for any resulting damages, especially for indirect damages, consequential damages, or lost profits, is excluded to the extent permitted by law.

Partial deliveries are permissible as long as they are reasonable for the customer. No additional shipping costs will be incurred unless otherwise agreed.

The exact delivery time of an item can be communicated individually upon request before or after the order.

Please contact us by phone at +49 (0)2551 5030 or by email at shipping@strahltechnik-express.de.

If there are significant delivery delays, we will inform the customer immediately. Mandatory legal rights of the customer remain unaffected.

Comprag RDX – Reliable refrigerant dryers for dry compressed air

The Comprag RDX series refrigerant dryers are high-quality components for effective drying of compressed air. They reliably reduce the humidity to a pressure dew point of max. +3 °C, thus protecting tools, machines, and products from corrosion, water accumulation, and quality losses. The models RDX-04, RDX-06, RDX-09, RDX-12, and RDX-18 are ideal for use in workshops, crafts, and industry with volume flows from 0.4 to 1.8 m³/min.


✅ Highlights
  • Constant dew point of +3 °C for reliable drying
  • Powerful and low-maintenance aluminum heat exchangers
  • Compact design – easy to integrate into existing systems
  • Environmentally friendly refrigerants (R134a or R513a)
  • Very low pressure loss thanks to integrated coalescing separator
  • Ideally combinable with screw compressors of the Comprag F series

🔧 Technical Data
Feature RDX 04 RDX 06 RDX 09 RDX 12 RDX 18
Article number 14310000 14310001 14310002 14310003 14310004
Volume flow (m³/min)* 0,4 0,6 0,9 1,2 1,8
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 / R134a
Refrigerant quantity (kg) 0,16 0,21 0,24 0,30 0,35
Connection thread G ½″ G ¾″
Nominal voltage (Ph / V / Hz) 1 / 230 / 50
Power consumption (kW) 0,10 0,13 0,15 0,22 0,23

* Measured according to ISO 7183: Operating pressure 7 bar, ambient +25 °C, inlet temperature +35 °C.
** Depending on the year of manufacture – see nameplate.


📏 Dimensions and Weight

Model Width (L) Depth (D) Height (H) Weight
RDX 04 360 mm 360 mm 500 mm 34 kg
RDX 06 35 kg
RDX 09 36 kg
RDX 12 36 kg
RDX 18 38 kg



📐 Adjustment of the volume flow to operating conditions

Here we offer you a practical calculator for the adjustment of the air volume flow to individual operating conditions.

The nominal 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 real systems often have different values, you can quickly and easily determine the correct dryer volume flow with this tool. Simply enter the air volume flow of your compressor as well as the corresponding correction factors (F1, F2, F3) – the calculator will show you the required dryer volume flow in m³/min and l/min.


Standard 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 screw compressor)
• Compressor block > 150 °C (without cooling), after oil separator approx. 80–100 °C
After aftercooler (compressed air outlet): in practice usually +10–15 °C above ambient → at 25 °C ambient typically ≈ 35–40 °C.


Result:

 


⚙️ Equipment
  • LED operating and fault display
  • Color-coded dew point display
  • Hot gas bypass control to prevent icing
  • Time-controlled condensate drain with delay
  • Coalescence separator (demister) integrated in the heat exchanger
  • Ready to connect with standard threaded connections

🏭 Typical areas of application
  • Compressor systems with continuous air demand
  • Sandblasting technology, painting, and powder coating operations
  • Pneumatic tools and machines
  • Production facilities with increased demands on compressed air quality
  • Protection of sensitive devices from condensate, rust, and failures

🔄 Suitable additions
  • Adsorption dryers: For particularly dry air (up to –40 °C dew point)
  • Activated carbon adsorbers: For the removal of oil vapors and odors
  • Fine and microfilters: For particle separation
  • Compressed air tanks: e.g., 270 l or 500 l for pressure stabilization
  • Maintenance kits: With filter inserts, O-rings, and seals

❓ FAQ – Frequently Asked Questions about the RDX Series
  • 1. Which refrigerant dryer is suitable for my compressor?
    The selection is based on the flow rate of your compressor. Example: RDX-04 for max. 0.4 m³/min, RDX-18 for max. 1.8 m³/min.
  • 2. What does the hot gas bypass control do?
    It ensures uniform operation at partial load and prevents the evaporator from freezing.
  • 3. How often does the dryer need to be serviced?
    A visual inspection is recommended weekly and a complete service annually – e.g., replacement of the condensate drain and cleaning of the heat exchanger.
  • 4. Can I connect the dryer directly?
    Yes – the RDX models are ready to connect and only require a 230 V power connection.
  • 5. How do I know if everything is running smoothly?
    The LED display informs about operating and fault conditions. Additionally, a colored display shows the current dew point status.

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