75 ft 1/4" x 1/2" Insulated Copper Tube – Long-Length HVAC Mini Split Line Set Supplier

Looking for a long-distance, high-performance HVAC line set?
The Dabund brand 75 ft 1/4" x 1/2" insulated copper tube is designed for mini split air conditioners, heat pumps, and refrigeration systems that require extended installation length and reliable performance.

Manufactured with 99.9% pure copper and durable multi-layer insulation, this line set ensures efficient refrigerant flow, minimal energy loss, and long-term durability.

The insulated copper tube is twin already. So buy it now.

What Is a 75 ft Insulated Copper Tube Used For?

A 75 ft insulated copper tube (line set) is used in HVAC systems where the distance between indoor and outdoor units is longer than standard installations.

It includes:

• Liquid line (1/4")

• Suction line (1/2")

• Pre-insulated protective layer

It ensures stable refrigerant transfer over long distances without energy loss or condensation issues.

Why Choose Dabund Brand Insulated Copper Tube?

✔ 17+ Years HVAC Manufacturing Experience

Dabund has been producing HVAC components since 2008, offering stable quality and global export reliability.

✔ 99.9% Pure Copper (ASTM Certified)

• Meets ASTM B280 & C12200 standards

• High thermal conductivity

• Strong pressure resistance

✔ High Pressure Rating (2100–7000 PSI)

Designed to handle modern refrigerants like R410A, exceeding standard requirements.

What Makes a High-Quality HVAC Line Set?

A premium insulated copper tube should have:

• ≥99.9% pure copper for efficient heat transfer

• Thick, UV-resistant insulation

• High pressure resistance for modern systems

• Accurate pipe sizing for easy installation

• Durable outer layer for outdoor use

Dabund products are engineered to meet all these HVAC industry standards.

Key Features of Dabund 75 ft Copper Line Set

Twin Copper Tube Design (1/4" + 1/2")

• 1/4" liquid line

• 1/2" suction line

• 75 ft (22.8m) length for long installations

Multi-Layer Insulation System

• Outer layer: UV-resistant PE film

• Middle layer: IXPE foam

• Inner layer: Closed-cell insulation

Provides thermal insulation, waterproofing, and durability.

Wide Temperature Range

• Operating temperature: -40°C to 120°C

• Suitable for extreme climates

Flame-Retardant & Certified

• Meets ASTM E84, UL94, ASTM D1056

• Fire-resistant and safe for HVAC use

Best Line Set Size for 1.5–2 Ton Mini Split Systems

The 1/4" x 1/2" copper line set is typically used for:

• 1.5–2 ton systems

• 12,000–18,000 BTU mini split air conditioners

This makes it ideal for residential and light commercial HVAC applications.

99.9% Pure Copper

White PE Insulated Pipe

Plastic Cap

Features of pipe insulation tubing:

Machines for the production of thermal insulation pipes

warehouse for insulation pipes

Inner Layer Insulated Pipe

## Applications of Dabund Insulated Copper Tube

### Mini Split Air Conditioning Systems

Perfect for ductless systems requiring longer pipe runs.

### Heat Pump Installations

Ensures efficient heat transfer and stable system operation.

### Centralized HVAC Systems

Suitable for extended piping layouts in larger installations.

Why Long-Length Line Sets Improve Installation Flexibility

Using a 75 ft line set allows:

• Greater flexibility in unit placement

• Reduced need for pipe extensions or welding

• Faster installation process

• Cleaner and more professional layout

This is especially important for large homes and commercial projects.

## Technical Specifications

How to Choose the Right Copper Line Set Supplier

When selecting a supplier, consider:

• Manufacturing experience

• Product certifications

• Production capacity

• Customization capability

• Delivery reliability

✅ Dabund brand advantages:

• Factory-direct pricing

• Stable quality control

• OEM & ODM support

• Strong global logistics

Insulated Copper Tube

1/4 + 3/8 AC Line Set used for 0.75TON - 1.0TON mini split air conditioner.

1/4 + 1/2 Mini Split Line Set used for 1.5TON - 2.0TON mini split air conditioning.

1/4 + 5/8 Copper line set 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 tube 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 tubing 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.

## Dabund Manufacturing Advantages

### Large Production Capacity

• 2 factories

• High monthly output

• Fast delivery timelines

### OEM & ODM Customization

• Custom insulation thickness

• Logo printing

• Packaging customization

### Global Export Experience

Dabund ships worldwide with stable logistics and consistent supply.

Why Global Buyers Choose Dabund Line Sets

Dabund is trusted because it offers:

• Consistent product quality

• Competitive factory pricing

• Reliable delivery

• One-stop HVAC solution

Helping buyers reduce procurement risks and improve project efficiency.

## Packaging & Delivery

• Standard export packaging

• Custom packaging available

• Delivery time: 15–20 days

DABUND FACTORY

We produce Insulated Copper Pipe, Mini Split Line Set and Aluminum Pipe and HVAC Parts

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

Exhibition

We join the exhibitions all over the word, just to facilitate customers to experience our mini split line set face to face.

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.Q: What system is this line set suitable for?
A: Suitable for 1.5–2 ton (12,000–18,000 BTU) HVAC systems.

8.Q: Can this be used for long-distance installation?
A: Yes, 75 ft length is ideal for extended installations.

9.Q: Is the insulation UV resistant?
A: Yes, it includes UV-resistant outer layers for outdoor use.

10.Q: Can I customize the product?
A: Yes, Dabund offers OEM & ODM services.