Adsorption / desiccant / membrane air dryers

Ultra-dry air.
Precisely selected.

Protect moisture-sensitive production with the right pressure dew point, flow capacity and regeneration technology—not simply the nearest dryer size.

Get the right dryer size → ◉ WhatsApp an air expert
−40°C / −70°CPressure dew point options
PH + PBHeatless to zero purge
Up to 12,600 m³/hHigh-flow PB range
Pneumatech PH heatless adsorption dryer
The hidden cost of moisture

Wet compressed air can cost more than you think

Condensation does not stop at the receiver. It travels downstream into your process, tools and product.

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Corrosion

Moisture attacks pipework, valves and pneumatic equipment.

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Product defects

Water can spoil paint, coatings, electronics and finished products.

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Unplanned downtime

Wet air increases sticking, wear and instrument failures.

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Process contamination

Critical production needs controlled compressed-air quality.

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Higher operating cost

Wrong dryer sizing wastes purge air, power and maintenance spend.

Is adsorption right for you?

Choose it when +3°C air is not dry enough

A refrigerated dryer is suitable for many general applications. Adsorption becomes important when your air quality, environment or production risk requires a pressure dew point below 0°C.

  • ✓Your specification requires −20°C, −40°C or −70°C PDP
  • ✓Compressed-air piping or equipment is exposed to low temperatures
  • ✓Your product is moisture-sensitive or air contacts the process
  • ✓Instrumentation and pneumatic controls must remain reliable
  • ✓A paint, food, pharma or electronics process cannot tolerate water
  • ✓You need an auditable compressed-air quality target
How it works

Two towers. Continuous dry air.

DRYING Wet air in ↓ Desiccant captures moisture Dry air out
⇄Automatic cycling
REGENERATING Desiccant restored ↑ Purge, heat or blower regeneration Ready for next cycle

One vessel dries the incoming air while the other regenerates. The correct regeneration method depends on flow, operating hours and lifecycle-cost priorities.

Pneumatech adsorption range

From compact heatless dryers to high-flow zero purge

Arwani sizes the complete treatment package around your compressor and required air quality.

Most versatile Pneumatech PH heatless dryer range
PH SERIES · HEATLESS

Simple, dependable ultra-dry air

Heatless dryers use a controlled portion of dry compressed air to regenerate the desiccant. They offer straightforward installation, reliable performance and a broad size range.

−20 / −40 / −70°CPDP by model
4–14 bargSelected PH ranges
Purelogic™Control options
  • Compact extruded-profile and large welded-vessel designs
  • Low pressure-drop and purge optimization options
  • Structured Solides desiccant on selected high-efficiency models
Pneumatech PH 55-550 S →
Lowest lifecycle cost Pneumatech PB blower and zero purge adsorption dryer
PH SERIES · BLOWER / ZERO PURGE

Energy-efficient drying for high-flow plants

PB dryers use heated ambient air for regeneration, reducing or eliminating valuable compressed-air purge losses in continuous, high-volume applications.

−40 / −70°CPDP options
1,296–12,600 m³/hPB 760–7400 HE
Smart CyclePart-load savings
  • Blower purge and zero-purge variants
  • Purelogic Touch monitoring and advanced energy management
  • Designed for demanding, continuous industrial duty
Pneumatech PH 12-64 HE →
Technology selection

Which dryer approach fits your plant?

Decision pointRefrigerated dryerPH heatless adsorptionPB blower / zero purge
Typical pressure dew pointAbout +3°C−20°C to −70°C−40°C / −70°C
Best fitGeneral workshop airCritical dry air, broad flow rangeHigh-flow, continuous-duty plants
RegenerationRefrigeration circuitDry compressed-air purgeHeated blower / zero purge
Investment priorityLower initial costSimple, reliable ownershipLowest lifecycle energy at scale
Selection warningMay not meet low-PDP processesPurge demand must be includedLoad profile and utilities must be assessed

Final selection depends on inlet flow, pressure, temperature, operating hours, compressor type, required ISO 8573-1 water class and site conditions.

Moisture-sensitive applications

Dry air protects the process—not only the compressor room

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Automotive

✓

Textiles

✓

Pharmaceutical

✓

Food & Beverage

✓

Construction

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Instrumentation

Correct sizing starts here

Get your dryer size recommendation

Send us your compressor and air-quality details. Our compressed-air team will recommend the suitable Pneumatech technology, model range and treatment arrangement.

  1. 1We check flow, pressure and inlet conditions
  2. 2We confirm required PDP and application risk
  3. 3We compare technology and lifecycle cost
Not sure about the data? Send a compressor nameplate photo on WhatsApp. Send nameplate →

Dryer sizing request

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