The KAK Flared Copper Capillary Tube is designed with a single-end flaring structure, making it smooth, flat, and ideal for tight, leak-free brazing connections.
Manufactured from high-purity copper with precise dimensional control, it provides consistent refrigerant flow and excellent thermal conductivity for refrigerators, air conditioners, and HVAC systems.
With clean surfaces and uniform internal diameter, this capillary tube helps maintain stable system performance and energy efficiency even under continuous operation.
It’s a reliable choice for OEM manufacturers and system maintenance engineers in the HVAC/R industry.
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Key Features
✅ Single-end flaring design for easy brazing and firm sealing
✅ Smooth inner wall for consistent refrigerant flow
✅ Excellent heat conductivity for efficient cooling
✅ Flexible and durable – can be bent without cracking
✅ Burr-free, clean surface, sealed for contamination prevention
✅ Conforms to ASTM B280 and EN 12735 copper tubing standards
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Applications
• Refrigerators & freezers
• Commercial coolers & chillers
• HVAC & air conditioning systems
• Refrigerant flow control connections
• Evaporator and expansion valve joints
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Technical Specifications
| Outer Diameter (mm) | Inner Diameter (mm) | Length (mm) |
|---|---|---|
| 2.0 | 0.8 | 900 |
| 3.0 | 1.5 | 450 |
| 3.0 | 2.0 | 250–500 |
Custom sizes available upon request
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Customization Options
• Custom diameter, length, or wall thickness
• Optional double flaring & surface polishing
• OEM / ODM available for refrigeration & HVAC brands
• Compatible with R134a, R404A, R600a, and R290 refrigerants
FAQ
It’s used to connect refrigerant lines and control flow in refrigerators, freezers, and HVAC systems, ensuring accurate metering and smooth operation.
A flared copper capillary tube has a single pre-flared end that allows faster installation, better sealing, and reduced leakage risk compared to non-flared types.
Yes, this tube is suitable for air conditioner capillary tube applications, helping regulate refrigerant flow in split or window units.
All KAK capillary tubes comply with ASTM B280, EN 12735, and RoHS standards for refrigeration copper piping.
Yes, we provide customized lengths, diameters, and flaring to match OEM refrigeration and HVAC requirements.