-
DBJ-003
-
DABUND
-
Copper
-
1M - 10M
Material
Color
Keywords
Application
25 Ft 3/8" x 3/4" Insulated Copper Pipe
DABUND 25 Ft 3/8" x 3/4" Insulated Copper Pipe is a pre-insulated copper line set for compatible HVACR and split air-conditioning installations requiring 3/8-inch and 3/4-inch copper tubing.
This configuration provides approximately 25 ft (7.62 m) of tubing with 3/8" (9.52 mm) and 3/4" (19.05 mm) outside diameters and 1/2" Black Rubber insulation according to the current product information.
The copper tube ends are flared and supplied with nuts for compatible flare-type HVAC connections. DABUND identifies the copper tubing with ASTM B280 and C12200 DHP references.
Quick Answer: This is a 25 ft 3/8" x 3/4" insulated copper line set with 1/2" Black Rubber insulation, flared tube ends and nuts for compatible HVACR installations.
Compatibility Notice: Copper line size must match the HVAC equipment manufacturer's installation requirements. Do not select a 3/8" x 3/4" line set only by system capacity. Confirm required liquid and suction line sizes, maximum permitted line length, vertical separation and refrigerant-charging requirements before installation.
25 Ft 3/8" x 3/4" Copper Line Set Specifications
| Product Type | Pre-Insulated Copper Pipe / Copper Line Set |
| Tube Size | 3/8" x 3/4" |
| Metric Outside Diameter | 9.52 mm x 19.05 mm |
| Length | 25 ft / 7.62 m |
| Insulation | 1/2" Black Rubber |
| Copper Tube Reference | ASTM B280 / C12200 DHP |
| Tube End Preparation | Flared ends with nuts |
| Black Rubber Temperature Range | -40°C to 120°C according to current product information |
| Typical Application | Compatible HVACR, split AC and other systems requiring 3/8" x 3/4" copper tubing |
Product Overview
The 25 ft pre-insulated copper line set combines two copper tubes in the 3/8" and 3/4" size combination with Black Rubber insulation for compatible HVAC installations.
Pre-insulation helps protect the refrigerant tubing and reduces the need to separately install insulation around the copper tubes at the job site.
The 25 ft length is suitable where approximately 7.62 m of line-set routing is required, subject to the HVAC equipment manufacturer's permitted line length and installation instructions.
Copper Tube Construction
DABUND identifies the copper tubing with ASTM B280 and C12200 DHP references for HVACR copper tube applications.
The product information also identifies the tubing as all-copper construction and describes the copper as 99.9% pure.
Copper line dimensions and wall thickness must still meet the requirements of the specific equipment and installation.
Factory-Prepared Flared Ends
Both copper tubes are supplied with flared ends and nuts according to the current product information.
Before installation, inspect the flare surfaces and confirm that the flare dimensions, nuts and connection method are compatible with the equipment service valves.
Copper Tube
Black Rubber Insulation
Flared Ends
1/2" Black Rubber Insulation
This 25 ft 3/8" x 3/4" configuration is identified with 1/2" Black Rubber insulation in the current product information.
The Black Rubber insulation provides a thermal and moisture-control layer around the copper tubing and is intended to help limit condensation on the insulated refrigerant line.
The current product information lists a Black Rubber operating-temperature range of -40°C to 120°C.
For installations requiring specific fire, smoke, UV or environmental performance, confirm the applicable test report and insulation configuration for the exact ordered product.
Insulation Performance
Thermal Insulation
The insulation layer helps reduce heat transfer between the refrigerant tubing and the surrounding environment.
Moisture and Condensation Control
The current product information describes the insulation as providing both thermal insulation and moisture protection, helping control condensation around the refrigerant tubing.
Temperature Range
The supplied Black Rubber insulation information lists an operating range from -40°C to 120°C.
Test References
The supplied insulation information references ASTM E84, UL 94, ASTM D1056 and ASTM G21. Confirm which reports and classifications apply to the exact insulation configuration being ordered.
What Is Included with the 25 Ft Line Set?
The current product information references an insulated copper-pipe installation package that may include communication wire, a 3 m drain hose, wall pipe, wall cover and other installation parts.
Exact package contents should be confirmed for the 25 ft 3/8" x 3/4" SKU before ordering, especially for wholesale or project purchases.
Available Insulated Copper Line Set Sizes
DABUND supplies multiple copper tube size combinations and insulation thickness options for different HVAC installation requirements.
| Copper Tube Size | Available Lengths | Black Rubber Insulation Options | Listed Flame Class |
|---|---|---|---|
| 1/4" + 3/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4" + 1/2" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/4" + 5/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8" + 5/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8" + 3/4" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 1/2" + 3/4" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
| 3/8" + 7/8" | 3 m / 4 m / 5 m / 7 m / 10 m | 8 / 9 / 10 / 13 / 19 / 25.4 mm | M1 / B1 |
Selecting the Correct Copper Line Size
Refrigerant line size is determined by the HVAC equipment design and manufacturer specifications rather than by physical appearance or installation length alone.
The current DABUND product information associates the 3/8" x 3/4" size combination with some approximately 4.5–6 ton or 54,000–72,000 BTU split-system applications.
This is a general reference only. The actual HVAC equipment installation manual governs the required liquid-line size, suction-line size, maximum line length and permitted vertical separation.
Before Installing a 25 Ft 3/8" x 3/4" Line Set
Confirm Required Line Sizes
Verify that the HVAC equipment specifically requires 3/8" and 3/4" refrigerant tubing.
Check Minimum and Maximum Line Length
Confirm that a 25 ft line length falls within the equipment manufacturer's permitted refrigerant-line range. Some systems specify both minimum and maximum allowable lengths.
Check Vertical Separation
If the indoor and outdoor units are installed at different elevations, confirm the maximum permitted vertical separation in the equipment manual.
Confirm Refrigerant Charging Requirements
Check the refrigerant type, factory charge, included line-length allowance and whether additional refrigerant is required for the actual installation length.
Inspect Flare Connections
Inspect the flare faces and nuts before connection, follow the equipment manufacturer's tightening procedure and perform the required leak testing and evacuation before system operation.
HVACR Applications
The 25 ft 3/8" x 3/4" insulated copper line set can be considered for compatible HVACR installations requiring this exact tubing combination.
Compatible split air-conditioning systems
Compatible ductless HVAC systems
Compatible heat-pump installations
Compatible VRF applications
HVAC replacement and installation projects requiring 3/8" x 3/4" tubing
Compatibility must always be verified using the actual equipment model and installation documentation.
Information to Confirm Before Ordering
HVAC distributors, contractors, installers and project buyers should confirm the following information before placing an order:
Required copper tube size: 3/8" x 3/4"
Required line-set length
Required insulation type
Required insulation thickness
HVAC equipment model
Required package accessories
Order quantity
Packaging requirements
OEM or private-label requirements
DABUND Insulated Copper Pipe Manufacturer
DABUND has produced insulated copper pipe, mini split line sets and related HVAC installation products since 2008.
Multiple copper tube size combinations, insulation configurations and line-set lengths are available for distributors, wholesalers, HVAC contractors and professional buyers.
OEM and ODM requirements can be discussed according to the required copper size, insulation configuration, packaging and commercial order requirements.
DABUND Factory
DABUND produces insulated copper pipe, mini split line sets and related HVAC installation components.
Insulation Test References
The current product information references ASTM E84, UL94, ASTM D1056 and ASTM G21 for insulation-related testing.
Because insulation configurations can vary, buyers requiring a particular test result or classification should confirm the applicable report for the exact product being ordered.
Exhibition
DABUND presents HVAC line-set and installation products at industry exhibitions for international customers and professional buyers.
Frequently Asked Questions
What size is this insulated copper line set?
This product is a 3/8" x 3/4" copper line set, equivalent to approximately 9.52 mm x 19.05 mm outside diameter.
How long is the copper line set?
The line set is 25 ft long, equivalent to approximately 7.62 m.
What insulation is used on this 25 ft line set?
The current product information identifies this configuration with 1/2" Black Rubber insulation.
What copper standard is listed for the tubing?
The current product information identifies ASTM B280 and C12200 DHP references for the copper tube.
Are the copper tube ends flared?
Yes. The current product information states that the copper tube ends are flared and supplied with nuts.
What is the temperature range of the Black Rubber insulation?
The current product information lists a temperature range of -40°C to 120°C for the Black Rubber insulation.
What system capacity uses a 3/8" x 3/4" line set?
The current product information associates 3/8" x 3/4" tubing with some approximately 4.5–6 ton or 54,000–72,000 BTU split-system applications. This is only a general reference. Always use the line sizes specified by the actual HVAC equipment manufacturer.
Can I use this line set with any 5-ton air conditioner?
Not automatically. Different equipment models can require different refrigerant line sizes even when their nominal capacities are similar. Confirm the required liquid and suction line sizes in the equipment installation manual.
Is 25 ft suitable for every installation?
No. Confirm the equipment manufacturer's minimum and maximum permitted refrigerant-line length and the actual installation routing before selecting the line-set length.
Do I need additional refrigerant for a 25 ft line set?
It depends on the HVAC system. Check the equipment's factory refrigerant charge, included line-length allowance and additional refrigerant requirements in the manufacturer documentation.
Can this copper line set be used with a heat pump?
It can be considered for compatible heat-pump systems that specifically require 3/8" x 3/4" refrigerant tubing. The equipment manual determines compatibility.
Can this line set be used for VRF equipment?
Only when the applicable VRF equipment design specifically requires this tubing size and line configuration. Confirm the piping design and manufacturer instructions before installation.
What accessories are included?
The current product information references communication wire, a 3 m drain hose, wall pipe, wall cover and other installation parts in the line-set package. Confirm the exact package contents for this 25 ft 3/8" x 3/4" SKU before ordering.
Are other copper tube sizes available?
Yes. The current product range includes combinations such as 1/4" x 3/8", 1/4" x 1/2", 1/4" x 5/8", 3/8" x 5/8", 3/8" x 3/4", 1/2" x 3/4" and 3/8" x 7/8".
Are different insulation thicknesses available?
Yes. The current product information lists multiple Black Rubber insulation thickness options across the product range. Confirm the required insulation thickness for the exact order.
Can DABUND provide OEM or ODM insulated copper line sets?
Yes. OEM and ODM requirements can be discussed according to the required tubing size, insulation configuration, package and commercial order requirements.
Can I request a sample?
Sample requests are available according to the current sales policy. View sample information.
What payment terms are available?
Available payment methods can include T/T, L/C at sight and credit card. Final payment terms depend on the commercial agreement.
What delivery terms are available?
Available international trade terms can include EXW, FOB, CFR and CIF.
What is the typical delivery time?
The current product information lists a typical delivery period of approximately 15–20 days. Actual lead time depends on order quantity, configuration, customization and production schedule.
