Buran Refrigerated Compressed Air Dryers

Put Moisture in its Place

When compressed air contains moisture and contaminants, your entire production process is at risk. Increase your level of protection with Donaldson’s premium Buran Refrigerated Dryer that delivers state-of-the-art drying performance and equipment longevity.

How the Buran Works

The Buran’s innovative aluminum heat exchanger provides a consistent supply of clean, dry air for your valuable equipment and processes.

Compressed air enters the dryer and is pre-cooled via the air-to-air heat exchanger. The inlet air is initially cooled by the outgoing cold compressed air.

The pre-cooled air then passes through the refrigerant-to-air heat exchanger where it is cooled to the required pressure dewpoint.

The moisture in the inbound compressed air condenses and collects in the dryer’s drain and discharges automatically.

Finally, the cold, discharged air is reheated by the incoming compressed air before it enters your system. The process prevents moisture from forming beyond the dryer.

The cooling capacity of the refrigeration cycle is controlled by a hot gas bypass, which provides proper functioning and compressed air delivery even during partial loading.

Features & Benefits

Easy to Install, Monitor & Service

• Compact design, intuitive set-up
• Service kits
• Service display
• Easy access to components within the housing

Certified to Meet Stringent Standards

• cETLus certification: Intertek (ETL) certified in accordance with Underwriters Laboratories (UL) and CSA group (CSA) standards

High Overload Capacity

• In case of overload, the dryer will only switch off at a dewpoint above approximately 68 °F

Integrated Alarm Signal

• Economical operation and integrated alarm installation in the compressed air network
• Connection to higher-level control possible

Electronic Level Controlled Condensate Zero Loss Drain

• No compressed air loss due to condensate removal

Aluminum Heat Exchanger

• Low operating costs due to low pressure drop across the heat exchanger
• No corrosion inside the heat exchanger due to contact with wet compressed air

Hot Gas Bypass Control

• Proven and reliable technology
• Constant dewpoint even with changing loads