Instrumentation & measurement
Air dryers and filter elements
Compressed-air dryers remove water vapour from compressed air to prevent condensation in lines and equipment, and replaceable filter elements keep line filters working. Refrigerated and heatless desiccant dryers cover general and low-dew-point duties.
Overview
A refrigerated dryer cools compressed air so that moisture condenses and is drained off; the units listed use a tube-in-tube evaporator with hot-gas bypass control, cover 15 to 300 CFM and connect with 1/2 inch to 2 inch BSP ports. A heatless desiccant dryer passes air through activated alumina in two towers, one drying while the other regenerates with part of the dry air, and reaches pressure dew points of -20 to -40 °C. Pre-filter, carbon and activated carbon filter elements are offered for replacement.
Selecting the right air dryer
Size a dryer by flow, inlet temperature, ambient temperature and working pressure, and choose the type from the dew point you need: refrigerated for general plant air, desiccant for lower dew points such as instrument, laboratory or painting air. Check the power supply, the pre- and post-filtration required, and the condensate drain arrangement.
Range overview
- Types and variants
- Refrigerated Air Dryers
- Heatless Desiccant Air Dryers
- Wall-Mounted Heatless Dryers
- Pre-Filter Elements
- Carbon Filter Elements
- Activated Carbon Filter Elements
- Materials and grades
- Aluminium Body (Heatless Dryer)
- Activated Alumina Desiccant
- Size range
- 15 to 300 CFM (Refrigerated)
- 5 to 40 CFM (Heatless)
- Pressure / temperature
- Working Pressure 16 kg/cm² (Refrigerated Series)
- Working Pressure 4 to 12 bar (Heatless)
- Inlet Air up to 60 °C (Refrigerated)
- Working Temperature 5 to 45 °C (Heatless)
- Pressure Dew Point -20 to -40 °C (Heatless)
- Purge Loss 10 to 12 % (Heatless)
- Supply 230 V Single Phase
- Connections and interfaces
- 1/2 Inch to 2 Inch BSP (Refrigerated)
- Standards referenced
- ISO 8573-1 Class 3 (Heatless Dryer)
- Features
- Tube-in-Tube Evaporator
- Hot-Gas Bypass Control
- 0.1 Micron Coalescing Pre-Filter and 20 Micron Post-Filter (Heatless)
- R134a, R22 or R407C Refrigerant
Exact specifications depend on the variant, material and size. Confirm ratings and certification against the datasheet or with our engineers before ordering.
Applications
- CNC and CMM Machines
- Spray Painting
- Nitrogen Generators
- Laboratory Air and Gas
- Powder Coating
Information that speeds up a quotation
Share what you know. Anything you are unsure of can be marked “not known” — our engineers will help confirm it.
- Fluid
- Control range
- Voltage
- Pressure
- Port size
- Signal
- Certification
Need a datasheet?
Add this family to your enquiry list and mention the variant — we will send the relevant technical documents.
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Frequently asked questions
What information do you need to quote an air dryer?
Send the compressor capacity or air flow in CFM, the working pressure, inlet air temperature, maximum ambient temperature, the dew point needed at the point of use, the power supply available, and the pipe size. Mention the application, such as general plant air, instruments or painting, and whether filters and drains should be included in the offer.
Should I choose a refrigerated or a desiccant dryer?
A refrigerated dryer is the usual choice for general plant air, where the aim is to stop liquid water forming in pipes at normal ambient temperatures. A heatless desiccant dryer reaches much lower dew points, which suits instrument air, laboratory gas, nitrogen generation and painting, but it uses part of the dried air for regeneration. Match the dryer to the dew point needed.
Ready to specify air dryers and filter elements?
Send the details you have — quantities, sizes, drawings or a part number. Unknowns are fine.