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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 Tubing
DABUND 100 ft 3/8 in. x 7/8 in. Pre-Insulated Copper Tubing provides a continuous refrigerant piping solution for compatible mini split air conditioners, heat pumps, VRF systems, commercial HVAC equipment and refrigeration applications.
The paired 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, for projects requiring extended refrigerant piping routes.
The source product information specifies 99.9% pure copper with ASTM B280 / C12200 referenced for the refrigerant tubing, together with factory-applied insulation for professional HVAC applications.
Quick Answer: This 100 ft 3/8 x 7/8 pre-insulated copper line set combines a 9.52 mm liquid line and 22.23 mm suction line with Black Rubber insulation for compatible long-distance mini split, heat-pump and commercial HVAC installations.
Pre-Insulated Copper Tubing Video
100 ft 3/8 x 7/8 Copper Tubing Specifications
| Product Type | Pre-Insulated HVAC Refrigerant Copper Line Set |
| Line Set Size | 3/8 in. + 7/8 in. |
| Liquid Line | 3/8 in. / 9.52 mm |
| Suction Line | 7/8 in. / 22.23 mm |
| Length | 100 ft / approximately 30.48 m |
| Copper Material | 99.9% Pure Copper |
| Copper Standard | ASTM B280 / C12200 |
| Featured Insulation | Black Rubber |
| Source-Featured Thickness | 1/2 in. Black Rubber insulation is referenced in the product copy |
| Family Insulation Thicknesses | 8 / 9 / 10 / 13 / 19 / 25.4 mm |
| Listed Temperature Range | -40°C to 120°C; confirm applicability to the exact insulation configuration |
| Source-Listed Pressure Range | 2100–7000 PSI; actual allowable pressure depends on tube dimensions, wall thickness and temperature |
| Listed Refrigerants | R410A / R32; final compatibility must follow equipment specifications |
| General Capacity Reference | 6.0–8.0 Ton / 72,000–96,000 BTU |
100 ft Long Refrigerant Line for HVAC Projects
The 100 ft / 30.48 m continuous coil provides additional routing flexibility for compatible HVAC installations where indoor and outdoor equipment are separated by a greater distance.
A continuous refrigerant line can reduce unnecessary intermediate joints compared with connecting several shorter tubing sections, provided the complete route remains within the HVAC equipment manufacturer's piping limits.
Typical project environments may include multi-story buildings, rooftop HVAC equipment, commercial properties and longer equipment-to-equipment refrigerant routes.
3/8 in. Liquid Line and 7/8 in. Suction Line
The source configuration identifies the 3/8 in. copper tube as the liquid refrigerant line and the 7/8 in. tube as the suction return line.
Buyers should verify that the selected HVAC or refrigeration equipment specifically requires these exact refrigerant-line diameters.
Required pipe sizes vary by equipment manufacturer and model, so system capacity should not be used as the sole selection criterion.
ASTM B280 C12200 Copper Refrigerant Tubing
The source product information specifies 99.9% pure copper and references ASTM B280 / C12200 for the refrigerant tubing.
Copper provides thermal conductivity, corrosion resistance and installation flexibility for compatible HVAC and refrigeration applications.
Suitable HVAC tube-bending tools and appropriate bend radii should be used to reduce the risk of kinking, flattening or restricting refrigerant flow.
Pressure Capability for Modern Refrigerants
The source page lists a pressure range of 2100–7000 PSI and references R410A and R32 refrigerant applications.
Actual allowable working pressure depends on copper tube diameter, wall thickness, operating temperature and exact product configuration. Confirm the applicable tubing specification before installation.
Black Rubber Insulation
Black Rubber insulation is prominently shown in the product images and the wider pre-insulated copper tubing family table.
The source product copy specifically references a 1/2 in. Black Rubber insulation configuration for this product, while the wider family table lists multiple insulation thickness options.
Thermal Insulation
Factory-applied insulation helps limit unwanted thermal exchange between the refrigerant piping and surrounding environment.
Condensation Protection
The closed-cell insulation structure helps reduce moisture penetration and surface condensation around cold refrigerant piping.
UV-Resistant Configuration
UV-resistant insulation is referenced on the source page for outdoor HVAC applications. Final suitability depends on the exact insulation configuration and exposure conditions.
Listed Temperature Range
The source page lists an insulation temperature range of approximately -40°C to 120°C. Confirm the applicable rating for the exact product configuration ordered.
Copper Tubing and Insulation Video
99.9% Pure Copper
Black Rubber Insulated Pipe
Protective Plastic Cap
Black Rubber Insulation Detail
Compatible HVAC Applications
Compatible ductless mini split air conditioners
Heat-pump systems
VRF and VRV systems requiring this pipe size
Central air-conditioning systems
Commercial HVAC installations
Compatible commercial refrigeration systems
Rooftop HVAC equipment
Final compatibility must be confirmed from the equipment manufacturer's required pipe sizes, refrigerant, design pressure and permitted piping length.
General 72,000–96,000 BTU Capacity Reference
The wider DABUND product family lists the 3/8 in. + 7/8 in. configuration as a general reference for some 6.0–8.0 ton HVAC systems.
The corresponding family reference is approximately 72,000–96,000 BTU.
These values are general references only. Final line-set sizing must follow the HVAC equipment manufacturer's exact technical requirements.
Important Checks for a 100 ft Refrigerant Run
Verify Maximum Permitted Piping Length
A physical 100 ft coil does not mean every HVAC system permits a 100 ft installed refrigerant run. Confirm the equipment manufacturer's maximum piping length before installation.
Confirm Exact Pipe Sizes
Verify that the selected equipment specifically requires a 3/8 in. liquid line and 7/8 in. suction line.
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 run may require additional refrigerant beyond the equipment's factory charge. Follow the manufacturer's charging instructions for the actual installed piping length.
Check Equivalent Piping Length
Bends, fittings and elevation changes can increase equivalent piping length. Follow the equipment manufacturer's engineering limits rather than relying only on the physical copper length.
Provide Proper Pipe Support
Use suitable HVAC-rated supports, clips or straps to reduce sagging, vibration and mechanical stress along the extended piping route.
Installation Guidelines
Plan the Complete Piping Route
Measure and plan the complete refrigerant route before uncoiling or cutting the copper tubing.
Avoid Sharp Bends and Kinks
Use suitable HVAC tube-bending tools and appropriate bend radii to reduce the risk of tube deformation and refrigerant-flow restriction.
Protect the Insulation
Avoid crushing, cutting or leaving unnecessary gaps in the insulation around bends, supports and wall penetrations.
Keep Copper Ends Protected
Keep open copper tube ends capped or sealed during storage and installation to reduce moisture and contamination entering the refrigerant system.
Pressure Test and Evacuate Before Startup
Refrigerant piping should be pressure-tested, evacuated, charged and commissioned according to the equipment manufacturer's instructions and applicable local requirements.
OEM and Custom Copper Tubing Options
Custom insulation thickness
Black or white insulation options
Custom packaging
Private-label printing
Custom copper tubing lengths
Company name and logo printing
Product-size and meter markings on insulation
Black Rubber Pre-Insulated Copper Line Set
Available Pre-Insulated Copper Tubing Sizes
| Size | Available Lengths | Black Rubber 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: This specific SKU is 100 ft / approximately 30.48 m. The wider family table lists 30 m as the closest standard metric production length, so buyers should specify the exact finished 100 ft configuration when ordering.
General Line Set Size and Capacity Reference
| 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 |
These capacity values are general product-family references only. Final refrigerant-line sizing must follow the HVAC equipment manufacturer's exact specifications.
DABUND Pre-Insulated Copper Tubing Factory
DABUND manufactures insulated copper tubing, mini split line sets and related HVAC components for distributors, contractors and project buyers.
Insulation Test Documentation
The source certificate section states that applicable Polypropylene or Black Rubber insulation configurations reference ASTM E84, UL94, ASTM D1056 and ASTM G21.
Because Black Rubber is the main configuration shown on this page, the certificate description is consistent with the featured insulation type. Buyers requiring compliance documentation should still confirm the exact insulation thickness and corresponding report for the ordered SKU.
International HVAC Exhibitions
DABUND participates in international HVAC exhibitions where professional buyers can review pre-insulated copper tubing, mini split line sets and related HVAC products.
Frequently Asked Questions
What is 100 ft 3/8 x 7/8 pre-insulated copper tubing used for?
It is used as refrigerant piping between compatible HVAC or refrigeration equipment requiring a 3/8 in. liquid line and 7/8 in. suction line.
How long is this copper tubing?
The product is 100 ft long, approximately 30.48 m.
What size HVAC system can use a 3/8 x 7/8 line set?
The wider 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 tubing size must follow the equipment manufacturer's exact specification.
What copper material is used?
The source product information specifies 99.9% pure copper and references ASTM B280 / C12200.
What insulation is used?
Black Rubber is the main insulation configuration shown on the page. The source product copy specifically references a 1/2 in. Black Rubber insulation configuration.
What insulation thicknesses are available?
The wider product-family table lists 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm Black Rubber insulation thickness options.
Is this tubing compatible with R410A and R32?
R410A and R32 are referenced on the source page. Final compatibility must be confirmed against the HVAC equipment manufacturer's refrigerant, pipe-size and design-pressure requirements.
What is the pressure rating?
The source page lists a pressure range of 2100–7000 PSI. Actual allowable pressure depends on tube diameter, wall thickness, operating temperature and exact product configuration.
Can every HVAC system use a 100 ft refrigerant run?
No. Confirm the HVAC equipment manufacturer's maximum permitted piping length, maximum elevation difference and refrigerant-charge requirements before installation.
Does a 100 ft refrigerant run require additional refrigerant?
Additional refrigerant may be required depending on the equipment's factory charge and included piping allowance. Follow the manufacturer's charging instructions for the actual installed length.
Can this tubing be used outdoors?
UV-resistant insulation is referenced on the source page. Final outdoor suitability should be confirmed for the exact insulation configuration and environmental exposure conditions.
Can the 100 ft copper tubing be shortened?
Yes. The copper tubing can be shortened using appropriate HVAC cutting, deburring and connection procedures while following the equipment manufacturer's requirements.
Can DABUND customize the pre-insulated copper tubing?
Yes. The source page lists customized insulation thickness, insulation color, packaging, line-set length, private-label printing and company logo printing.
Is professional HVAC installation recommended?
Yes. Refrigerant piping should be installed, pressure-tested, evacuated, charged and commissioned according to the HVAC equipment manufacturer's instructions and applicable local requirements.
