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DBJ-003
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DABUND
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Copper
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1M - 50M
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1/4,3/8,1/2,5/8,3/4,7/8,1,1-1/8
Material
Color
Keywords
Application
50 ft 3/8 in. x 3/4 in. HVAC Line Set
DABUND 50 ft 3/8 in. x 3/4 in. HVAC Line Set provides pre-insulated copper refrigerant tubing for compatible mini split air conditioners, split AC systems, heat pumps and light commercial HVAC installations.
The paired refrigerant tubing combines a 3/8 in. liquid line with a 3/4 in. suction line and provides a 50 ft length, approximately 15.2 m.
Manufactured from 99.9% pure seamless copper, the line set is supplied with factory-applied White PE insulation to help reduce thermal exchange, control condensation and simplify compatible HVAC installation.
Quick Answer: This 50 ft 3/8 x 3/4 HVAC line set combines high-purity copper tubing, White PE insulation and factory-prepared connections for compatible split AC, mini split and heat-pump projects.
50 ft HVAC Line Set Video
50 ft 3/8 x 3/4 HVAC Line Set Specifications
| Product Type | Pre-Insulated HVAC Refrigerant Line Set |
| Line Set Size | 3/8 in. x 3/4 in. |
| Liquid Line | 3/8 in. / approximately 9.52 mm |
| Suction Line | 3/4 in. / approximately 19.05 mm |
| Length | 50 ft / approximately 15.2 m |
| Copper Material | 99.9% Pure Seamless Copper |
| Insulation | Factory-Applied High-Density Insulation |
| Featured Insulation | White PE |
| Insulation Features | UV- and Moisture-Resistant Outer Jacket |
| Applications | Compatible Mini Split, Split AC, Heat Pump and Light Commercial HVAC Systems |
Product Detail
The product-detail image below shows the construction and presentation of the 3/8 x 3/4 pre-insulated HVAC refrigerant line set.
3/8 in. Liquid Line and 3/4 in. Suction Line
The paired copper tubing combines a 3/8 in. liquid refrigerant line with a 3/4 in. suction return line.
Before ordering, verify that the specific HVAC equipment requires these exact liquid-line and suction-line diameters.
Refrigerant line size should not be selected only by nominal system tonnage or BTU capacity because required tubing dimensions can vary between HVAC manufacturers and equipment models.
50 ft Length for Extended HVAC Installations
The 50 ft refrigerant line provides additional routing flexibility where compatible indoor and outdoor HVAC equipment are separated by a moderate distance.
It can support compatible residential split systems, ductless HVAC projects, heat-pump installations, replacement projects and light commercial air-conditioning applications.
Before installation, confirm the HVAC equipment manufacturer's maximum permitted refrigerant piping length, allowable elevation difference and any additional refrigerant charging requirements.
99.9% Pure Seamless Copper Refrigerant Tubing
The source product information specifies 99.9% pure seamless copper construction for the refrigerant tubing.
Copper provides the flexibility required for routing compatible refrigerant piping while maintaining suitable thermal performance for HVAC applications.
Proper HVAC bending methods and appropriate bend radii should be used to reduce the risk of kinking or flattening the tubing.
Factory-Applied White PE Insulation
The featured configuration uses White PE insulation around the copper refrigerant tubing.
Factory-applied insulation helps reduce unwanted heat gain or loss and helps control condensation on cold refrigerant tubing.
The source product information describes the insulation outer jacket as resistant to UV exposure and moisture. Buyers requiring specific outdoor-performance or compliance documentation should confirm the exact ordered insulation configuration.
Copper Line Set and Insulation Video
99.9% Pure Copper
White PE Insulated Pipe
Protective Plastic Cap
White PE Embossed Insulated Pipe
White PE insulation provides a protective thermal layer around the copper refrigerant tubing and helps reduce surface condensation during compatible HVAC operation.
Insulation Production and Structure
Insulation Pipe Production
Insulation Pipe Warehouse
Inner Layer Insulated Pipe
Benefits of the 50 ft HVAC Line Set
Extended Installation Reach
The 50 ft length provides greater routing flexibility where compatible indoor and outdoor HVAC units cannot be installed close together.
Reduced Field Preparation
The source product information describes the tubing as pre-insulated and references pre-flared ends, helping reduce field preparation where the factory connection dimensions match the selected HVAC equipment.
Thermal Protection
Factory-applied insulation helps reduce unwanted thermal exchange between the refrigerant line and ambient air.
Condensation Control
Insulation helps reduce condensation on cold refrigerant tubing and limits moisture exposure along the piping route.
Compatible HVAC Applications
Compatible residential split air conditioners
Mini split and ductless HVAC systems
Heat-pump refrigerant lines
Replacement refrigerant-line projects
Multi-zone HVAC installations where this line size is required
Light commercial HVAC systems
Final compatibility should be confirmed using the HVAC equipment manufacturer's required liquid-line size, suction-line size, flare connection dimensions, permitted piping length and refrigerant requirements.
Important Considerations for a 50 ft Refrigerant Run
Confirm the Exact Pipe Sizes
Verify that the selected HVAC equipment specifically requires a 3/8 in. liquid line and 3/4 in. suction line.
Verify Maximum Permitted Piping Length
Confirm that the equipment manufacturer permits at least the required 50 ft refrigerant piping route.
Check Maximum Elevation Difference
Where indoor and outdoor equipment are installed at different heights, verify the maximum allowable vertical separation specified by the manufacturer.
Check Additional Refrigerant Requirements
Additional refrigerant may be required depending on the HVAC equipment, factory refrigerant charge and total installed piping length. Follow the equipment manufacturer's charging instructions.
Installation Guidelines
Measure the Complete Refrigerant Route
Measure the complete piping route before cutting or installing the copper refrigerant tubing.
Avoid Sharp Bends and Kinks
Use suitable tube-bending methods and bend radii to reduce the risk of tube deformation or restricted refrigerant flow.
Maintain Continuous Insulation Coverage
Avoid cutting, crushing or leaving unnecessary gaps in the White PE insulation, particularly around bends, supports and wall penetrations.
Use Correct Flaring and Torque Procedures
Inspect factory-prepared connections before installation. If tubing is shortened, use suitable HVAC cutting, deburring and flaring tools and follow the equipment manufacturer's specified connection torque.
Pressure Test and Evacuate Before Startup
Follow the HVAC equipment manufacturer's approved pressure-testing, evacuation, refrigerant charging and commissioning procedures before startup.
Available HVAC Line Set Sizes
| Line Set Size | Available Lengths | White PE Insulation | Listed Flame-Resistance Options |
|---|---|---|---|
| 1/4 + 3/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4 + 1/2 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4 + 5/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 5/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 3/4 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/2 + 3/4 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8 + 7/8 in. | 15 m / 20 m / 25 m / 30 m / 50 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
Length Note: The wider family table lists 15 m, 20 m, 25 m, 30 m and 50 m production lengths. This specific SKU is 50 ft, approximately 15.2 m, so confirm the exact 50 ft configuration when ordering.
General Line Set Size and Capacity Reference
The following capacity ranges are general references from the wider DABUND HVAC line set family. Final refrigerant-line sizing must follow the HVAC equipment manufacturer's exact piping requirements.
| Line Set Size | General Ton Reference | General BTU Reference |
|---|---|---|
| 1/4 + 3/8 in. | 0.75–1.0 Ton | 9,000–12,000 BTU |
| 1/4 + 1/2 in. | 1.5–2.0 Ton | 12,000–18,000 BTU |
| 1/4 + 5/8 in. | 2.0–2.5 Ton | 24,000–30,000 BTU |
| 3/8 + 5/8 in. | 3.0–4.0 Ton | 36,000–48,000 BTU |
| 3/8 + 3/4 in. | 4.5–6.0 Ton | 54,000–72,000 BTU |
| 3/8 + 7/8 in. | 6.0–8.0 Ton | 72,000–96,000 BTU |
For the 3/8 x 3/4 configuration, the DABUND product family lists 4.5–6.0 ton and 54,000–72,000 BTU as general references. Actual compatibility must be confirmed from the HVAC equipment manufacturer's exact refrigerant piping requirements.
Why Choose the DABUND 50 ft 3/8 x 3/4 Line Set?
99.9% Pure Seamless Copper
High-purity seamless copper construction provides flexible refrigerant tubing for compatible residential and commercial HVAC projects.
White PE Factory Insulation
Factory-applied White PE insulation helps reduce unwanted heat exchange and condensation while reducing additional field insulation work.
50 ft Installation Length
The 50 ft line provides practical routing flexibility for compatible residential, retrofit and light commercial HVAC projects.
Suitable for Distributor and Project Supply
Multiple line sizes, production lengths and insulation thicknesses are available across the wider product family for distributors, contractors and HVAC projects.
DABUND HVAC Line Set Factory
DABUND manufactures insulated copper pipe, mini split line sets, aluminum pipe and related HVAC products for distributors, contractors and project customers.
Insulation Test Documentation
The source certificate section references ASTM E84, UL94, ASTM D1056 and ASTM G21 for applicable Polypropylene or Black Rubber insulation configurations.
Because the featured product configuration on this page uses White PE insulation, buyers requiring project-specific compliance documentation should confirm the selected insulation material, thickness and corresponding test report before ordering.
International HVAC Exhibitions
DABUND participates in international HVAC exhibitions where distributors and professional buyers can review insulated copper pipe, mini split line sets and related HVAC products.
Frequently Asked Questions
What does 3/8 in. x 3/4 in. mean?
It refers to the outside diameters of the two refrigerant tubes: 3/8 in. for the liquid line and 3/4 in. for the suction return line.
How long is this HVAC line set?
The product is 50 ft long, approximately 15.2 m.
What material is the refrigerant tubing made from?
The source product information specifies 99.9% pure seamless copper.
What insulation material is shown?
The featured product configuration and original specification table show White PE insulation.
What White PE insulation thicknesses are available?
The wider product family lists 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm insulation thicknesses.
What size HVAC system can use a 3/8 x 3/4 line set?
The DABUND product family lists 3/8 x 3/4 as a general reference for some 4.5–6.0 ton or 54,000–72,000 BTU systems. Final line sizing must follow the HVAC equipment manufacturer's exact requirements.
Is this line set compatible with every mini split or AC brand?
Universal compatibility should not be assumed. Verify the required liquid-line diameter, suction-line diameter, connection dimensions, refrigerant requirements and permitted piping length for the specific HVAC model.
Can every HVAC system use a 50 ft refrigerant line?
No. Confirm the equipment manufacturer's maximum permitted refrigerant piping length and allowable elevation difference before installation.
Does a 50 ft line set require additional refrigerant?
Additional refrigerant may be required depending on the HVAC equipment, factory refrigerant charge and total installed piping length. Follow the equipment manufacturer's charging instructions.
Are the copper tube ends pre-flared?
The source product information describes the line set as using pre-flared ends. Confirm the flare dimensions and connection requirements against the selected HVAC equipment before installation.
Can the copper tubing be cut to a custom length?
Yes. The source product information states that the copper tubing can be trimmed to the required length. After cutting, use proper HVAC cutting, deburring, re-flaring and sealing procedures.
Is additional insulation required for outdoor installation?
The product is factory pre-insulated. Additional protection may still be appropriate under severe UV exposure, harsh weather, wall penetrations or project-specific installation requirements.
What other HVAC line set sizes are available?
Listed combinations include 1/4 + 3/8, 1/4 + 1/2, 1/4 + 5/8, 3/8 + 5/8, 3/8 + 3/4, 1/2 + 3/4 and 3/8 + 7/8 in.
What production lengths are available?
The wider product family lists 15 m, 20 m, 25 m, 30 m and 50 m production lengths. This specific SKU is approximately 15.2 m, so confirm the exact 50 ft configuration when ordering.
Is DABUND a manufacturer?
Yes. The source product information identifies DABUND as a manufacturer of HVAC line sets, insulated copper pipe and related HVAC products.
Can DABUND provide free samples?
Yes. The listed sample policy provides up to three free samples for qualified requests, with the buyer responsible for express freight. View Sample Information
What payment terms are available?
Listed payment options include T/T, L/C at sight and credit card.
What delivery terms are available?
Listed delivery terms include EXW, FOB, CFR and CIF.
Does DABUND support OEM and ODM?
Yes. OEM and ODM services, including logo customization, are available for suitable orders.
What is the typical delivery time?
The listed typical delivery time is approximately 15–20 days, depending on order quantity and production requirements.
