Premium 75 ft pre-insulated copper tubing with 1/2″ liquid line and 3/4″ suction line — engineered for HVAC, mini split, and ductless air conditioner refrigerant applications requiring extended line runs with superior thermal protection.
Product Overview – Long HVAC Refrigerant Line with Factory Insulation
This 75 ft 1/2″ × 3/4″ insulated copper tubing combines high-quality copper tubing with a factory-applied insulation jacket to reduce heat gain/loss, control condensation, and support reliable refrigerant transport between indoor and outdoor units in HVAC and air conditioning systems.
Designed for Extended Refrigerant Runs
75 ft length accommodates larger installation distances
Ideal for second-story units, rooftop systems, and wide-area layouts
Reduces need for couplers and joins, lowering leak potential
Standard 1/2″ × 3/4″ Line Size Pairing
1/2″ liquid line for refrigerant feed
3/4″ suction line for return gas
Common size combination for mini split and ductless AC installations and other HVAC applications.
Factory-Applied Insulation – Thermal Performance & Protection
Enhanced Thermal Efficiency
Factory insulation helps maintain consistent refrigerant temperatures over the line length, reducing heat gain/loss that can negatively affect system performance.
Condensation Prevention & Moisture Control
Pre-insulated tubing significantly reduces surface condensation and dripping, helping prevent water damage on nearby walls and structures and minimizing indoor moisture issues.
UV-Resistant & Weather-Durable Jacket
The insulation layer is UV-resistant and suitable for outdoor exposure, providing long-term durability in varied climatic conditions.
Premium Copper Construction for HVAC Reliability
99.9% Pure Copper Tubing
Constructed with high-purity copper that provides:
Designed for High Pressure HVAC Systems
This copper tubing supports pressures well above typical HVAC requirements, making it suitable for systems using modern refrigerants and pressure loads encountered in residential or commercial installations.
HVAC Compatibility & Applications
Works with Mini Split & Ductless AC Systems
Ideal for connecting the indoor evaporator and outdoor condenser in:
Mini split air conditioners
Ductless heat pump systems
Residential and light commercial HVAC installs
Supports Common HVAC Refrigerants
Compatible with widely used refrigerants such as R410A, R32, and other modern HVAC refrigerants, meeting industry performance expectations.
Features of pipe insulation tubing:
● Pipe Insulation, Material Black Rubber, Temp Range -40 Degrees to 120 Degrees.
● The pipe insulation has a better function of moisture condensation. Insulation material is both the insulation layer and moisture-proof layer.
● There is no need to drop the water vapor permeation protective layer so that it has a better moisture condensation function.
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Key Benefits of This Insulated Copper Tubing
Reduced Installation Labor & Field Insulation Work
Pre-insulated tubing eliminates the need for additional field insulation wrapping, reducing installation time and labor costs.
Improved HVAC Efficiency & System Performance
By preserving refrigerant temperatures and reducing heat transfer along the line, this tubing supports efficient cooling and heating cycles.
Protects Against Moisture & Structural Damage
Proper insulation helps prevent dripping and condensation buildup that can lead to moisture-related issues in wall cavities and building structures.
Technical Specifications
| Feature | Detail |
| Length | 75 ft (22.86 m) |
| Liquid Line Diameter | 1/2″ |
| Suction Line Diameter | 3/4″ |
| Material | 99.9% Pure Copper |
| Insulation | Factory-applied, UV-resistant |
| Applications | Mini split AC, ductless HVAC systems |
| Compatible Refrigerants | R410A, R32, and similar refrigerants |
| Standards | ASTM B280, C12200 |
Installation Tips for Best Results
Confirm Line Length and Path Before Installation
Measure total run distance between units before installation to ensure the tubing length is appropriate without excessive bending or stress.
Protect Insulation at Wall Penetrations
Use wall sleeves or protective grommets where the line passes through structures to prevent insulation abrasion and tear.
Secure Tubing with Proper Supports
Install clips or HVAC line brackets along long runs to prevent sagging, reduce vibration, and protect insulation integrity over time.
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Insulated Copper Tubing
Size | Length | Insulation Black Rubber | Flame Resistant |
1/4+3/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+1/2 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+5/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/2+3/4 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
3/8+7/8 | 15m/20m/25m/30m/50m | 8mm/9mm/10mm/13mm/19mm/25.4mm | M1/B1 |
1/4 + 3/8 Mini split line set used for 0.75TON - 1.0TON mini split air conditioner.
1/4 + 1/2 Insulated copper line set used for 1.5TON - 2.0TON mini split air conditioning.
1/4 + 5/8 Insulated copper pipe used for 2.0TON - 2.5TON split air conditioner system.
3/8 + 5/8 Insulated copper tube apply for 3.0TON - 4.0TON ductless mini split air conditioner.
3/8 + 3/4 Insulated copper tubing used for 4.5TON - 6.0TON split air conditioner installation.
3/8 + 7/8 Insulated copper Pipe apply for 6.0TON - 8.0TON ductless mini split air conditioner.
Air conditioning copper line sets 1/4 + 3/8 used for 0.75P and 1P split air conditioning.
Copper pipe kit 1/4 + 1/2 commonly used for 1.5P and 2P mini split air conditioners.
1/4 + 5/8 Insulated copper pipe used for 2P and 2.5air conditioner system.
3/8 + 5/8 Mini-split copper line set apply for 3P and 4P ductless mini split air conditioner.
3/8 + 3/4 Copper pipe kit used for 4.5P and 6P split aircon installation.
3/8 + 7/8 Insulated copper pipe apply for 6P - 8p TON ductless mini split air conditioner.
1/4 + 3/8 Mini split line set used for 9000BTU and 12000 BTU split air conditioner.
All copper line set 1/4 + 1/2 commonly used for 12000 BTU and 18000 BTU mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 24000 BTU and 30000 BTU air conditioner system.
3/8 + 5/8 Mini-split line set apply for 36000 BTU and 48000 ductless air conditioner.
3/8 + 3/4 Insulated copper tubing used for 54000 BTU and 72000 split air conditioner installation.
3/8 + 7/8 Insulated copper pipe apply for 72000 BTU - 96000 BTU ductless mini split air conditioner.
Aircon copper line set 1/4 + 3/8 used for 9K and 12K split air conditioner.
High quality copper line set 1/4 + 1/2 commonly used for 12K and 18K mini split air conditioners.
1/4 + 5/8 Insulated copper line set used for 24K and 30K air conditioner system.
3/8 + 5/8 Mini-split line set apply for 36K and 48K ductless air conditioner.
3/8 + 3/4 Insulated copper pipe used for 54K and 72K split air conditioner installation.
3/8 + 7/8 Insulated copper tubing apply for 72K - 96K ductless mini split air conditioner.
Why Choose This 75 ft Insulated Copper Tubing
Reliable HVAC Performance & Long-Term Durability
With premium copper construction and UV-resistant insulation, this tubing delivers dependable performance and long-lasting service in demanding HVAC environments.
Ideal for Professional & DIY Installations
Whether you are a certified HVAC technician or an experienced DIY installer, this line set offers ease of installation and consistent performance quality.
Versatile Application Across HVAC Systems
Perfect for residential, apartment, and light commercial HVAC installations where extended line runs are required, offering flexibility and performance.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
![Factory Profile]( "Factory Profile")
SGS Certificate
Mini Split Line Set is made of Polypropylene or Black Rubber with UV Resistant, meets ASTM E 84, UL94, ASTM D1056 and ASTM G 21
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Exhibition
We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.
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FAQ
1.Q:What is your payment terms?
A:TT,L/C AT SIGHT,CREDIT CARD etc
2.Q:What is your delivery terms?
A:EXW, FOB, CFR, CIF etc
3.Q:Are you trading company or manufacturer?
A:Manufacturer
4.Q:May I get a sample?
A:Yes, we can send you 3pieces free samples.
You just charge for the express cost is ok.
5.Q:Can I print my logo?
A:Yes of cause, we accept OEM and ODM.
6.Q:How long is your delivery time?
A:Usually 15-20days, if urgent, we can arrange to do in advance and delivery fast.
7.What does “1/2″ × 3/4″” refer to?
It refers to the outer diameters of the copper tubing: 1/2″ liquid line and 3/4″ suction line, matching common HVAC refrigerant line sizes.
8.Is this tubing suitable for outdoor HVAC installations?
Yes — factory-applied insulation is UV-resistant and weather-durable, making it appropriate for outdoor line runs and exposed applications.
9. Do I need to wrap extra insulation on site?
No — this product includes factory insulation that meets common HVAC insulation requirements, eliminating the need for additional field wrapping.
10.Is this tubing compatible with R410A and R32 refrigerants?
Yes — this insulated copper tubing supports common modern refrigerants such as R410A and R32, meeting typical HVAC operating specifications.
