Premium 50 ft insulated copper pipe set designed to deliver reliable refrigerant flow, improved thermal efficiency, and condensation control for mini split, ductless AC, and HVAC applications.
1/4" x 3/8" x 50 ft Insulated Copper Pipe is two tubes tied together with insulating tape, unlike White Embossed Copper Tube, two tubes can be glued together. For the convenience of transportation, we will pack the tubes very neatly and beautifully. So buy it now.
Product Overview – High-Quality Insulated Copper Refrigerant Line
This 1/4″ x 3/8″ x 50-foot insulated copper pipe combines high-purity copper tubes with factory-applied insulation to help maintain optimal refrigerant temperatures, reduce energy loss, and prevent condensation on line surfaces — suitable for indoor and outdoor HVAC installations.
Standard Line Sizes for HVAC Compatibility
1/4″ liquid line and 3/8″ suction line
Standard configuration used in many mini split air conditioners and ductless heat pump systems
Compatible with most residential and light commercial HVAC units
Factory-Applied Insulation for Enhanced Performance
Pre-insulated to reduce heat gain and heat loss during refrigerant transfer
Eliminates need for field insulation wrapping, saving installation time
Improves system efficiency and reduces condensation risk
UV-Resistant and Weather-Ready Insulation
UV-resistant insulation protects the copper pipe from sunlight and outdoor exposure
Suitable for rooftop, exterior wall, and other outdoor HVAC line runs
Key Features & Benefits
99.9% Pure Copper for Reliable HVAC Performance
Made from 99.9% pure copper tubing, this line set provides excellent thermal conductivity, corrosion resistance, and durable performance under a wide range of temperatures and operating conditions.
H3: Improved Energy Efficiency
Pre-insulated tubing helps minimize thermal transfer and system energy loss — keeping refrigerant at desired temperatures and improving HVAC efficiency.
H3: Condensation Control for Clean Operation
Insulation surface reduces condensation and dripping, helping prevent moisture damage to walls, ceilings, and surrounding materials.
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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Compatibility & HVAC Applications
Ideal for Mini Split and Ductless AC Systems
This 50 ft insulated copper pipe is designed for use in:
Mini split air conditioners
Ductless heat pump systems
Residential HVAC setups
Light commercial HVAC installations
Supports Modern Refrigerants
Compatible with common refrigerants including R410A, R32, and similar HVAC refrigerants, meeting pressure and safety standards required by most systems.
Technical Specifications
Length: 50 ft (15.24 m)
Line Sizes: 1/4″ (liquid) × 3/8″ (suction)
Material: 99.9% pure copper tubing
Insulation: Factory-applied UV-resistant insulation
Application: Mini split HVAC refrigerant lines
Temperature Range: Typical HVAC operating range
Installation Tips for Best Results
Confirm Refrigerant Line Path Before Installation
Measure total line run length between indoor and outdoor units to plan routing and avoid sharp bends or kinks that could impact performance.
Protect Insulated Lines at Wall Penetrations
Use wall pipe sleeves or protective grommets where lines pass through building surfaces to protect insulation and tubing from damage.
Support Line Set Properly
Secure copper lines using appropriate clamps or straps to minimize vibration, prevent sagging, and extend line set lifespan.
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Insulated Copper Pipe
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 piping 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 line set 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 piping 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 pipe used for 54000 BTU and 72000 split air conditioner installation.
3/8 + 7/8 Insulated copper piping 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 piping apply for 72K - 96K ductless mini split air conditioner.
Why Choose This 50 ft Insulated Copper Pipe?
Reliable Performance and Installation Ease
With premium copper construction and factory-insulated design, this 50 ft line set delivers dependable HVAC performance, easier installation, reduced energy loss, and long-lasting durability for residential and commercial systems.
DABUND FACTORY
We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts
![DABUND FACTORY]( "222")
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 “1/4″ x 3/8″” mean in this insulated copper pipe set?
It refers to the outer diameters of the two copper tubes — 1/4″ for the liquid line and 3/8″ for the suction line, a common size used in mini split and ductless HVAC systems.
8.Is this insulated copper pipe suitable for outdoor use?
Yes — the factory-applied insulation is UV-resistant and weather-ready, designed to withstand outdoor exposure while protecting performance.
9.Do I need extra insulation in the field?
No — this product comes with factory-applied insulation that eliminates the need for additional insulation in most installations.
10.Is this line set compatible with R410A and R32 refrigerants?
Yes — this line set is compatible with common refrigerants such as R410A, R32, and similar HVAC refrigerants, meeting standard pressure and safety requirements.
