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PH 760-3390 HE

High-capacity welded-vessel adsorption dryers designed for demanding industrial compressed-air systems, delivering -40°C pressure dew point as standard with an optional -70°C configuration. The range combines low pressure drop, optimized purge consumption and advanced control for reliable, energy-conscious drying.
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Introduction

Atcorp offers PH 760–3390 HE welded-vessel heatless adsorption dryers for large compressed-air installations requiring dependable low-dew-point performance. The range uses high-quality desiccants, counter-current regeneration, large-diameter vessels and open silencers to achieve efficient drying with a purge rate of only 16%. Three control configurations provide flexibility for different plant requirements.

Key Benefits

Large Vessel Diameter
Three Controller Options
Transport-Friendly Design
Robust Welded Construction
Low Noise Purging
Only 16% Average Purge Rate

Why Choose pH 760–3390 He Adsorption Dryers?

Large industrial compressed-air systems often require continuous moisture control to protect pneumatic equipment, instrumentation, production processes and final products. Heatless adsorption dryers remove water vapour by passing compressed air through a desiccant and regenerating the saturated material with dry, expanded purge air.

 

The PH 760–3390 HE is designed specifically for high-flow applications. Its welded vessels, large diameter, open silencers and optimized regeneration system help provide dependable drying while keeping pressure drop and purge consumption under control.

Model

Version PDP -40° C

Nominal volume flow at dryer inlet (m3/h)

PH 760 HE

1296

PH 1020 HE

1728

PH 1330 HE

2268

PH 2060 HE

3492

PH 2670 HE

4536

PH 3390 HE

5760

The PH 760–3390 HE uses a two-vessel heatless adsorption process to continuously produce dry compressed air.

 

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

 

Step 2 – Desiccant Adsorption
The air passes through the desiccant, where moisture is captured.

 

Step 3 – Dry Air Delivery
The treated compressed air leaves the active vessel with the required low pressure dew point.

 

Step 4 – Desiccant Saturation
As the drying cycle continues, the active desiccant accumulates moisture.

 

Step 5 – Counter-Current Regeneration
A portion of dry, expanded purge air flows through the saturated vessel in the opposite direction to the normal drying airflow.

 

Step 6 – Moisture Release
The purge air removes the accumulated moisture from the desiccant.

 

Step 7 – Vessel Switching
The vessels automatically switch functions once regeneration is complete.

 

Step 8 – Continuous Drying
One vessel dries compressed air while the other regenerates, maintaining continuous dry-air production.

-40°C Standard Pressure Dew Point

The standard configuration delivers a pressure dew point of -40°C / -40°F, suitable for demanding industrial compressed-air applications.

 

Optional -70°C Pressure Dew Point

For applications requiring exceptionally dry air, the range can be configured for -70°C / -94°F using molecular-sieve desiccant.

 

High Flow Capacity

With capacities up to 5,760 m³/h, the range is designed for large centralized compressed-air systems.

 

16% Purge Rate

The optimized design reduces average regeneration-air consumption to approximately 16% at maximum flow, helping lower the operating cost of heatless drying.

 

Open Silencer Design

Innovative open silencers help minimize pressure drop while reducing noise during purge cycles.

 

Counter-Current Regeneration

Regeneration against the direction of normal airflow supports efficient moisture removal and consistent dry-air production.

 

Application-Specific Desiccant

The standard -40°C version uses activated alumina, while molecular sieves are used for -70°C and high-inlet-temperature applications.

 

Large Vessel Diameter

The large vessels help reduce the risk of desiccant crushing. A sonic nozzle is available to further support desiccant protection.

 

Robust Welded Vessels

The welded-vessel construction provides a durable platform for large industrial installations.

Flexible Control Options

Customers can select from DC1, PureLogic™ or pneumatic control, depending on monitoring, energy-management and installation requirements.

 

Electricity-Free Pneumatic Control

The pneumatic controller option can operate without electricity at the dryer installation, making it suitable for specialized applications where electrical installation is undesirable or unavailable.

Drying Technology

  • Heatless adsorption
  • Two-vessel operation
  • Counter-current regeneration
  • -40°C standard PDP
  • -70°C optional PDP
  • Activated alumina for standard -40°C operation
  • Molecular sieve for -70°C/high-temperature operation

 

Energy Management

  • 16% average purge rate
  • PDP control
  • Compressor synchronization
  • Optional purge-nozzle optimization
  • Low pressure drop

 

Mechanical Construction

  • Welded vessels
  • Large vessel diameter
  • Open silencers
  • Sonic nozzle availability
  • Robust industrial construction
  • Transport-friendly design

 

Controller Options

  • DC1 Controller – Basic control and monitoring
  • PureLogic™ Controller – Advanced control, monitoring and energy optimization
  • Pneumatic Controller – Electricity-free installation option

 

Available Options

  • Purge-nozzle optimization
  • PDP control for DC1 configuration
  • Inlet and outlet filters
  • Vessel safety valves
  • Wooden packaging
  • High-inlet-temperature configuration

Industrial Applications

PH 760–3390 HE adsorption dryers are designed for large compressed-air systems where consistent low-dew-point air, high capacity and controlled operating costs are important.
Large Manufacturing Plants
Provides dry compressed air for centralized pneumatic networks serving multiple production areas.
Automotive Manufacturing
Supports large-scale pneumatic automation, assembly lines and production equipment.
Pharmaceutical Manufacturing
Suitable for selected process and utility-air applications requiring controlled moisture levels.
Chemical & Process Industries
Provides low-dew-point compressed air for suitable instrumentation, control and process applications.
Oil & Gas
Suitable for selected instrument-air and utility-air systems requiring dependable moisture control.

Frequently Asked Questions

Find answers about PH 760–3390 HE welded-vessel heatless adsorption dryers, capacity, pressure dew point, purge consumption, controls and installation.
The PH 760–3390 HE is a range of high-capacity welded-vessel heatless adsorption dryers designed for industrial compressed-air systems requiring very dry air.
The range covers nominal inlet flows from 1,296 to 5,760 m³/h.
The PH 760 HE has a nominal inlet flow capacity of 1,296 m³/h at the published -40°C PDP condition.
The PH 3390 HE provides a nominal inlet flow capacity of 5,760 m³/h, making it the largest model in this range.
Selection should consider compressed-air flow, operating pressure, required pressure dew point, inlet temperature, ambient conditions, purge-air requirements, control preference and available installation space.
Yes. Atcorp can help Indian industrial customers evaluate their compressed-air treatment requirements and identify the appropriate PH 760–3390 HE model and configuration based on flow, pressure, dew point, operating conditions and plant requirements.

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