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DX Evaporator Coil



CUSTOM-MADE HVAC & REFRIGERATION COIL

DX Evaporator Coil

Direct Expansion Cooling Coil

Custom-made finned evaporator coil engineered for air-conditioning, refrigeration and HVAC applications using refrigerant as the direct cooling medium.

โ„๏ธ High-Efficiency Direct Expansion Cooling

DX Evaporator Coil, also known as a Direct Expansion Coil, uses refrigerant as the cooling medium in a closed-loop refrigeration system. Refrigerant entering the evaporator absorbs heat from the air passing across the coil surface, providing effective cooling for HVAC and refrigeration applications.

Coils can be custom manufactured according to required dimensions, tube size, fin material, fin spacing, casing material and system application.

๐Ÿ“ Custom Coil Specifications

๐Ÿ”ต
Copper Tube
Seamless drawn copper tube
3/8" · 1/2" · 5/8"
๐Ÿ“
Fin Spacing
Flexible fin density according to application
3 – 20 FPI
โš™๏ธ
Fin Material
Select according to operating environment
Aluminium / Copper
๐Ÿ›ก๏ธ
Casing Material
Standard or corrosion-resistant options
GI · SS304 · SS316L

๐Ÿ”ง Available Coil Construction

Component Available Specification
Coil Type DX / Direct Expansion Evaporator Coil
Tube Material Seamless Drawn Copper Tube
Tube Diameter 3/8" Ø / 1/2" Ø / 5/8" Ø
Fin Material Aluminium or Copper
Fin Spacing 3 – 20 FPI (Fin Per Inch)
Standard Casing Galvanized Steel
Optional Casing Stainless Steel 304 (2B) / 316L (2B)
Header Material Copper / Galvanized Steel
Special Coating Marine / Corrosion-Protection Coating Available

๐Ÿ“ Custom-Made to Your System Requirements

DX evaporator coils can be manufactured according to the cooling system design and installation requirements. Coil selection can be configured based on:

โœ“ Coil Dimensions
โœ“ Cooling Capacity
โœ“ Refrigerant Type
โœ“ Airflow Requirement
โœ“ Evaporating Temperature
โœ“ Fin Spacing
โœ“ Tube Diameter
โœ“ Installation Environment

โœจ Fin & Material Options

Aluminium Fin
Common fin material providing effective heat-transfer performance for standard HVAC applications.
Copper Fin
Available for applications requiring alternative material construction.
Special Fin Surface
Corrugated, sine-wave and enhanced fin surfaces are available according to design requirements.
Marine Protection
Special chemical coating is available for demanding marine or corrosive environments.

๐Ÿงช Pressure & Leakage Testing

Coils are leak tested under water using high-pressure dry air at 350–400 PSIG to verify coil integrity before delivery.

๐Ÿญ Typical Applications

โ„๏ธ Commercial Refrigeration
๐Ÿข Air Handling Unit (AHU)
๐Ÿ’จ Fan Coil Unit (FCU)
โš™๏ธ Package Air-Conditioning
๐ŸงŠ Cold Room Systems
๐Ÿญ Industrial HVAC Systems

๐Ÿ”„ Looking for a Replacement Coil?

For replacement or custom-made DX coils, provide the existing coil dimensions, tube size, number of rows, fin spacing, refrigerant, operating conditions and connection details whenever available. This helps us select or manufacture a coil suitable for your system requirements.

Need a Custom-Made DX Evaporator Coil?

Contact RNA Engineering & Trading Sdn Bhd for custom-made DX evaporator coils, replacement coils and refrigeration components in Kuala Lumpur (KL), Selangor and Malaysia.



 Inquiry - DX Evaporator Coil