All datasheets Air Prep Systems

Air Prep Systems

Air Cooled After Cooler

Electric and pneumatic fan options

23113 · PR-078 · Rev. No. 01 · Issued 10 Oct 2026

Air Cooled After Cooler

Air-cooled air aftercoolers cool the compressed air with atmospheric air. A standard screw air compressor will increase compressed air temperature by 100°C over the ambient temperature. This hot, laden air is then directed into the pneumatically driven fan-cooled aluminum radiator, where it is cooled, and water vapor begins to coagulate into large droplets. The cooled air is then directed through a coalescent filter to remove the moisture. There are four different models available for Blastline Aftercoolers, namely BL-450, BL-600, BL-800, and BL-1000. The compressed air is cooled to approximately 9°C above ambient temperature. A sufficient capacity aftercooler can take up to 80% of the moisture present in the compressed air. The BL Series is a complete aftercooler package designed to work on most models of rotary air compressors. To select the appropriate model, simply determine compressor horsepower and select the model from the chart.

Features

  • Advanced technology design provides compact cooling with a High-efficiency cooling system - 100% Aluminium-made.
  • Rugged, high-performance Bar & Plate technology.
  • Designed for maximum heat transfer with minimum compressed air pressure loss.
  • High performance & working pressure - Heavy duty.
  • Heat transfer is maximized by heavy-gauge brazed aluminum fins that increase cooling air turbulence.
  • Maintenance-free product.
  • Low noise levels.
  • Cost-effective compared with Cu-Br cooler.
  • Electric/pneumatic pusher fans options are available.
  • All models feature sturdy, corrosion-resistant housing with strong steel brackets for floor mounting.
  • Fan blades are made of Polypropylene and feature an aluminum hub, ensuring balanced vibration-free operation.
  • Fan motors are chosen for extended service life and low maintenance requirements.

Applications

  • Aftercoolers are a crucial component in any system that utilizes compressed air.
  • Used in conjunction with desiccant or deliquescent dryers for the removal of up to 90% moisture.
  • In high-humidity environments, for maximum blasting productivity and reduced abrasive wastage.

Technical specifications

Ambient Temperature-15°C ~ +55°C
Max. Inlet Temperature125°C
Altitude~ 1000m ASL
Delta T (Above Ambient)~ 9°C
Max. Operating Pressure250 Psi

Technical data

ModelInternal Max Air flow (CFM)Compressor Horsepower used
BL AC 5453950-75 HP
BL AC 80785100-125 HP
BL AC 1201200125-160 HP
BL AC 1601569150-200 HP

Technological advantages: high-performance bar & plate technology; up to 60% smaller than conventional fin and tube designs; fin spacing allows uniform air distribution while resisting choking of dust/dirt; reduced air side fouling; 99% efficient moisture separator; well-suited for harsh environments, the fin system prevents clogging and is easy to clean; compact and robust design, field-tested during many years of use in rugged, real-life conditions.

Hollow profile advantages: reduced strain (according to strength calculations, the maximum strain is reduced to 2); prolonged service lifetime (service life time increases by a factor ranging from 3 to 5).