Engineered for Atlas Copco non-cycling and cycling refrigerated compressed air dryers (such as the FD and FX series), this compact, vacuum-brazed aluminum heat exchanger serves as the core thermal transfer unit—combining the air-to-air pre-cooler/reheater and the air-to-refrigerant evaporator into a single high-efficiency block.
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Two-Stage Thermal Efficiency: Incoming warm, saturated compressed air is pre-cooled by outgoing cold, dry air before entering the evaporator section, where evaporating refrigerant lowers the air temperature to achieve a stable pressure dew point (+3°C to +7°C).
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Minimal Pressure Drop: High-efficiency internal plate-fin geometry maximizes heat transfer surface area while keeping airflow resistance low, reducing compressor energy losses.
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Heavy-Duty Brazed Aluminum Construction: Corrosion-resistant, lightweight aluminum alloy housing with precision TIG-welded end tanks and manifold ports ensures leak-free operation under continuous industrial duty cycles.
| Specification | Details |
| Component Type | Integrated Air-to-Air & Refrigerant Evaporator Heat Exchanger |
| Primary Part Numbers | 619-1004M-BSP, 619-1004M-B-BSP (API Airtech / Atlas Copco) |
| Related / Associated Part Nos. | 1621600103, 1623711700, 1621401401 |
| Core Material | Vacuum-Brazed Aluminum Alloy |
| Compatible Refrigerants | R134a / R410A / R404A (depending on dryer model) |
| Max Design Pressure (Air Side) | 13 – 16 bar (188 – 232 psi) |
| Max Design Pressure (Refrigerant Side) | Up to 28 bar (406 psi) |
| Port Configuration | BSP Air Inlet/Outlet + Sealed Refrigerant & Drain Connections |
