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DBJ-003
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DABUND
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Copper
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1M - 50M
Material
Color
Keywords
Application
100 ft 3/8 in. x 7/8 in. Pre-Insulated Copper Line Set
DABUND 100 ft 3/8 in. x 7/8 in. Pre-Insulated Copper Line Set is designed for compatible mini split air conditioners, ductless heat pumps, multi-zone HVAC systems and commercial refrigerant piping installations requiring an extended line run.
The paired refrigerant tubing combines a 3/8 in. liquid line with a 7/8 in. suction line and provides a continuous 100 ft length, approximately 30.48 m.
The refrigerant tubing is manufactured from 99.9% pure copper and supplied with factory-applied insulation to help reduce thermal exchange, control condensation and protect the copper tubing during compatible indoor and outdoor HVAC installations.
Quick Answer: This 100 ft 3/8 x 7/8 copper line set provides a continuous pre-insulated refrigerant piping solution for compatible HVAC equipment requiring a 3/8 in. liquid line and 7/8 in. suction line.
100 ft 3/8 x 7/8 Copper Line Set Specifications
| Product Type | Pre-Insulated Copper HVAC Refrigerant Line Set |
| Line Set Size | 3/8 in. x 7/8 in. |
| Liquid Line | 3/8 in. / approximately 9.52 mm |
| Suction Line | 7/8 in. / approximately 22.23 mm |
| Length | 100 ft / approximately 30.48 m |
| Copper Material | 99.9% Pure Copper |
| Copper Standards | ASTM B280 / C12200 |
| Insulation | Factory-Applied, UV-Resistant |
| Featured Insulation | White PE Configuration Shown |
| Source Pressure Reference | Listed as high-pressure rated up to 7000 PSI; confirm exact working and burst pressure for the selected tube specification |
| Listed Refrigerants | R410A, R32 and other compatible HVAC refrigerants |
| Applications | Compatible mini split, heat pump, multi-zone and commercial HVAC systems |
3/8 in. Liquid Line and 7/8 in. Suction Line
The line set combines a 3/8 in. liquid line for refrigerant delivery with a 7/8 in. suction line for refrigerant vapor return.
The larger 7/8 in. suction line is used by compatible HVAC equipment requiring greater refrigerant vapor-return capacity.
Both tube sizes must match the HVAC equipment manufacturer's specified refrigerant piping dimensions. Do not select line-set diameter based only on nominal system capacity.
Extended 100 ft Refrigerant Line
The continuous 100 ft refrigerant line provides additional routing flexibility for installations where the indoor and outdoor equipment are separated by a significant distance.
It can be used for compatible multi-story buildings, larger commercial spaces, rooftop HVAC equipment and other projects where shorter refrigerant line sets cannot complete the required route.
Using one continuous line can reduce intermediate piping connections compared with joining multiple shorter sections, provided the total installed length remains within the HVAC equipment manufacturer's requirements.
99.9% Pure Copper Refrigerant Tubing
The refrigerant tubing is manufactured from 99.9% pure copper and references ASTM B280 and C12200 for HVAC refrigerant piping applications.
Copper provides thermal conductivity, corrosion resistance and flexibility for routing between compatible indoor and outdoor HVAC equipment.
99.9% Pure Copper
White PE Insulated Pipe
Protective Plastic Cap
Factory-Applied White PE Insulation
The featured product configuration uses White PE insulation around the copper refrigerant tubing.
Factory-applied insulation helps reduce unwanted heat gain and heat loss along the refrigerant line while helping control condensation on cold tubing surfaces.
Pre-insulated construction also reduces additional field insulation work and provides consistent insulation coverage over long refrigerant piping runs.
Insulation Production and Structure
Insulation Pipe Production
Insulation Pipe Warehouse
Inner Layer Insulation
100 ft White PE Copper Line Set
The featured White PE configuration combines factory-insulated copper refrigerant tubing with a continuous 100 ft coil for compatible extended HVAC installations.
Benefits of Pre-Insulated Copper Tubing
Reduced Field Insulation Work
Factory-applied insulation reduces additional on-site insulation wrapping and provides more consistent coverage around the refrigerant tubing.
Condensation Control
Proper insulation helps reduce surface condensation on cold refrigerant tubing and limits moisture exposure to walls, ceilings and surrounding building materials.
Thermal Protection
Insulation helps reduce unwanted thermal exchange between the refrigerant tubing and surrounding environment during heating and cooling operation.
Fewer Intermediate Connections
A continuous 100 ft coil can reduce the number of intermediate piping connections required on compatible long-distance HVAC installations.
Available Copper 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 |
General Line Set Size and Capacity Reference
The following capacity ranges are general references from the wider DABUND copper line set family. Final refrigerant-line sizing must follow the HVAC equipment manufacturer's specified liquid-line and suction-line dimensions.
| 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 7/8 configuration, the product family lists 6.0–8.0 ton and 72,000–96,000 BTU as general references. Final selection must be based on the exact piping dimensions specified by the HVAC equipment manufacturer.
Compatible HVAC Applications
Compatible higher-capacity ductless mini split air conditioners
Heat-pump systems requiring 3/8 x 7/8 refrigerant piping
Multi-zone HVAC systems
Residential HVAC projects
Commercial HVAC installations
Institutional and rooftop HVAC applications
Refrigerant Compatibility
The source product information lists R410A and R32 among the common refrigerants used with compatible HVAC systems.
Final refrigerant compatibility, pressure requirements, refrigerant-line dimensions and connection requirements must be verified against the HVAC equipment manufacturer's technical documentation.
Important Considerations for a 100 ft Refrigerant Line
Verify Maximum Permitted Line Length
Confirm that the HVAC equipment manufacturer permits at least 100 ft of total refrigerant piping before selecting this line set.
Check Maximum Elevation Difference
For multi-story or rooftop installations, confirm the maximum permitted vertical separation between indoor and outdoor equipment.
Check Additional Refrigerant Charge
A 100 ft refrigerant line may require additional refrigerant depending on the HVAC equipment and its factory charge. Follow the equipment manufacturer's charging instructions.
Confirm the Exact Pipe Sizes
Confirm that the specific equipment requires a 3/8 in. liquid line and 7/8 in. suction line. The required tube diameter is not determined by line length alone.
Support the Long Refrigerant Run
Use suitable HVAC-rated clamps, straps or support brackets along the piping route to reduce sagging, vibration and mechanical stress on the tubing and insulation.
Installation Guidelines
Plan the Complete Piping Route
Measure the entire indoor-to-outdoor refrigerant piping path before installation and allow for routing around structural components without excessive bends.
Avoid Sharp Bends and Kinks
Use appropriate bending methods and bend radii to reduce the risk of kinking the copper tubing or restricting refrigerant flow.
Protect Insulation at Penetrations
Use wall sleeves, grommets or suitable protection where the insulated line set passes through walls, ceilings or other structural openings.
Maintain Insulation Integrity
Avoid cutting, crushing or excessively compressing the insulation because damaged insulation can reduce thermal and condensation-control performance.
Follow the Equipment Manufacturer's Instructions
Refrigerant piping, connection preparation, evacuation, charging and system commissioning should follow the HVAC equipment manufacturer's installation requirements.
DABUND Insulated Copper Line Set Factory
DABUND manufactures insulated copper pipe, mini split line sets, aluminum pipe and related HVAC installation products for distributors 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 images show White PE insulation, buyers requiring specific certification should confirm the selected insulation material, thickness and corresponding test documentation before ordering.
International HVAC Exhibitions
DABUND participates in international HVAC exhibitions where distributors and professional buyers can review insulated copper line sets and related HVAC installation products.
Frequently Asked Questions
What does 3/8 in. x 7/8 in. mean?
It refers to the outside diameters of the refrigerant tubing: 3/8 in. for the liquid line and 7/8 in. for the suction return line.
How long is this copper line set?
The line set is 100 ft long, equivalent to approximately 30.48 m.
What material is the refrigerant tubing made from?
The source product information lists 99.9% pure copper tubing.
What standards are referenced for the copper tubing?
ASTM B280 and C12200 are referenced for the copper tubing.
Is the copper line set pre-insulated?
Yes. The refrigerant tubing is supplied with factory-applied insulation.
What insulation configuration is shown?
The featured product images show a White PE insulated configuration.
What insulation thicknesses are available?
The wider product family lists White PE insulation thicknesses of 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm.
What size HVAC system can use a 3/8 x 7/8 line set?
The DABUND product family lists 3/8 x 7/8 as a general reference for some 6.0–8.0 ton or 72,000–96,000 BTU systems. Final refrigerant-line sizing must follow the equipment manufacturer's required piping dimensions.
Can every HVAC system use a 100 ft line set?
No. Confirm the maximum permitted line length, allowable elevation difference, required refrigerant pipe dimensions and charging requirements for the specific HVAC equipment.
Does a 100 ft refrigerant line require additional refrigerant?
Additional refrigerant may be required depending on the HVAC equipment and total installed piping length. Follow the equipment manufacturer's charging instructions.
Is this line set compatible with R410A and R32?
R410A and R32 are listed among the compatible refrigerants. Final suitability should be verified against the specific HVAC equipment manufacturer's technical specifications.
Can the line set be installed outdoors?
The product information describes the factory-applied insulation as UV-resistant for compatible outdoor refrigerant-line installations.
Is additional field insulation required?
Factory-applied insulation reduces additional field wrapping, although local codes, project specifications and installation conditions may require additional protection.
What is the pressure rating?
The source page describes the product as high-pressure rated and references values up to 7000 PSI. Exact working pressure and burst pressure should be confirmed for the 3/8 x 7/8 tube dimensions, wall thickness and applicable test method before ordering.
What other copper 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.
Can DABUND provide free samples?
Yes. The listed sample policy provides up to three free samples for qualified requests, with the buyer paying the express freight. View Sample Information
What payment terms are available?
Available payment methods include T/T, L/C at sight and credit card.
What delivery terms are available?
Available 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.
