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PH 230-635 HE

High-capacity heatless adsorption dryers designed to deliver clean, dry compressed air with a -40°C pressure dew point as standard, with an optional -70°C configuration for more demanding applications. The range combines robust welded vessels, efficient desiccant technology, low pressure drop and optimized purge operation for dependable industrial air treatment.
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Introduction

Atcorp offers PH 230–635 HE heatless adsorption dryers for high-capacity compressed-air systems requiring reliable low-dew-point performance. The range uses high-efficiency desiccant, welded vessels and counter-current regeneration to produce consistently dry air while minimizing pressure drop and purge losses. Advanced PureLogic™ Touch control and monitoring further simplify operation and performance management.

Key Benefits

Low Noise During Purging
Low Pressure Drop
Optional -70°C PDP
Easy Transportation
Minimal Purge Losses
High Airflow Capacity

Why Choose pH 230–635 He Adsorption Dryers?

Compressed air naturally contains moisture that can cause corrosion, contamination, freezing and equipment failures. For applications requiring substantially drier air than refrigeration dryers can provide, adsorption technology uses a desiccant to capture water vapour from the compressed-air stream. The PH 230–635 HE uses two welded adsorption vessels operating alternately. While one vessel dries the compressed air, the other is regenerated using dry, expanded purge air. Counter-current regeneration, optimized purge control and efficient desiccant technology help provide reliable drying with controlled operating costs.

Model

Nominal volume flow at dryer inlet (m3/h)

PH 230 HE

385

PH 320 HE

540

PH 390 HE

666

PH 530 HE

900

PH 635 HE

1080

The PH 230–635 HE uses a two-vessel adsorption process with heatless regeneration.

 

Step 1 – Moist Compressed Air Entry
Compressed air containing water vapour enters the active adsorption vessel.

 

Step 2 – Filtration
The supplied filtration system helps protect the dryer and downstream equipment from contaminants.

 

Step 3 – Adsorption
The compressed air passes through the high-efficiency desiccant, which adsorbs moisture.

 

Step 4 – Dry Air Delivery
The treated compressed air exits the active vessel with a pressure dew point of approximately -40°C.

 

Step 5 – Desiccant Saturation
As the drying cycle continues, the active desiccant gradually accumulates moisture.

 

Step 6 – Counter-Current Regeneration
The second vessel is regenerated using dry, expanded purge air flowing in the opposite direction to the normal drying airflow.

 

Step 7 – Vessel Switching
Once regeneration is complete, the vessels switch roles automatically.

 

Step 8 – Continuous Drying
The regenerated vessel resumes drying while the other vessel enters regeneration, providing continuous dry compressed air.

-40°C Pressure Dew Point

The standard configuration provides a pressure dew point of -40°C / -40°F, helping protect compressed-air systems from condensation and moisture-related problems.

 

Optional -70°C Performance

A dedicated -70°C / -94°F version is available for applications requiring exceptionally dry compressed air.

 

High-Capacity Air Treatment

With capacities from 385 to 1,080 m³/h, the range is designed for larger industrial compressed-air systems.

 

Counter-Current Regeneration

Regeneration occurs against the direction of normal drying airflow, supporting efficient moisture removal and dependable dry-air performance.

 

Low Pressure Drop

The dryer is designed to minimize pressure loss, helping reduce the energy required to maintain downstream operating pressure.

 

Minimal Purge Losses

Purge-nozzle optimization and energy-management features help reduce unnecessary compressed-air consumption during regeneration.

 

High-Efficiency Desiccant

The selected desiccant provides effective moisture adsorption and supports reliable low-dew-point performance.

 

Reduced Risk of Desiccant Crushing

The large vessel diameter helps minimize the risk of desiccant damage, while an optional sonic nozzle is available for additional protection.

 

Robust Welded Vessel Construction

The welded vessel design provides a durable platform for demanding industrial applications, with a safety valve provided for each vessel.

 

Advanced Monitoring

PureLogic™ Touch control and monitoring provide greater visibility into dryer operation and performance.

 

Low Noise During Purging

The system is designed to keep purge-related noise levels low, improving the suitability of the dryer for industrial environments.

Drying Technology

  • Heatless adsorption
  • Two-vessel operating principle
  • High-efficiency desiccant
  • Counter-current regeneration
  • -40°C standard PDP
  • Dedicated -70°C PDP option

 

Energy Management

  • PDP control
  • Purge-nozzle optimization
  • Low pressure drop
  • Minimal purge losses
  • Efficient regeneration

 

Mechanical Construction

  • Welded vessels
  • One safety valve per vessel
  • Large vessel diameter
  • Robust industrial construction
  • Designed for transportation

 

Control & Monitoring

  • PureLogic™ Touch controller
  • Advanced dryer monitoring
  • PDP control option
  • Performance monitoring
  • Remote monitoring capability

 

Available Options

  • Dedicated -70°C PDP model
  • Sonic nozzle
  • HP purge nozzle optimization
  • NEMA 4 electrical enclosure
  • NEMA 4X electrical enclosure
  • Reverse inlet/outlet piping
  • Filter pressure-drop indication
  • Stainless-steel tubing
  • Heavy-duty paint for ASME models

Industrial Applications

PH 230–635 HE adsorption dryers are suitable for medium- and high-capacity industrial compressed-air systems where reliable low-dew-point performance is important.
Automotive Manufacturing
Supports pneumatic automation, assembly equipment and production systems where moisture can affect equipment reliability.
General Manufacturing
Provides dry compressed air for production machinery, pneumatic systems and factory-wide air networks.
Electronics Manufacturing
Helps protect sensitive pneumatic and production equipment from moisture-related problems.
Chemical & Process Industries
Provides low-dew-point compressed air for suitable instrumentation, control and process applications.
Food & Beverage
Can support appropriate production and utility applications where dry compressed air is required, subject to the process-specific air-quality specification.

Frequently Asked Questions

Find answers about PH 230–635 HE heatless adsorption dryers, capacity, pressure dew point, regeneration, controls, construction and installation.
The PH 230–635 HE is a range of heatless adsorption dryers with welded vessels, designed for high-capacity compressed-air systems requiring low pressure dew points
The standard configuration achieves -40°C / -40°F, with a dedicated -70°C / -94°F configuration available.
The published nominal inlet flow range is 385–1,080 m³/h.
The range includes PH 230 HE, PH 320 HE, PH 390 HE, PH 530 HE and PH 635 HE.
Selection should consider compressed-air flow, operating pressure, required pressure dew point, inlet temperature, ambient conditions, purge requirements, installation space and future capacity needs.
Yes. Atcorp can help Indian industrial customers assess their compressed-air drying requirements and select the appropriate PH 230–635 HE configuration based on airflow, pressure dew point, operating conditions and installation requirements.

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