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DBJ-003
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DABUND
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Copper
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1M - 10M
Material
Color
Keywords
Application
35 Ft 3/8" x 3/4" Insulated Copper Pipe
DABUND 35 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 uses 1/2" Black Rubber insulation according to the current product information and is supplied with flared copper tube ends and nuts for compatible flare-type HVAC connections.
The copper tubing is identified with ASTM B280 and C12200 DHP references. The 35 ft length is intended for installations where the equipment manufacturer permits this refrigerant-line length and 3/8" x 3/4" tube combination.
Quick Answer: This product is a 35 ft 3/8" x 3/4" pre-insulated copper line set with 1/2" Black Rubber insulation, flared tube ends and nuts for compatible HVACR installations.
Compatibility Notice: Refrigerant line size and length must match the HVAC equipment manufacturer's requirements. Confirm the required liquid and suction line sizes, maximum permitted line length, vertical separation and refrigerant-charging instructions before installation.
35 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" |
| Length | 35 ft |
| 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 and split air-conditioning systems requiring 3/8" x 3/4" copper tubing |
35 Ft Pre-Insulated Copper Line Set
The 35 ft line set combines 3/8" and 3/4" copper tubing with factory-applied Black Rubber insulation for compatible HVAC installations.
Pre-insulated tubing reduces the need to separately apply insulation to the refrigerant piping at the installation site and provides a consistent insulated line-set configuration.
Before choosing a 35 ft line set, verify that the actual piping route and equipment installation requirements permit this length.
ASTM B280 and C12200 Copper Tubing
DABUND identifies the copper tubing used in this product range with ASTM B280 and C12200 DHP references for HVACR copper tube applications.
The current product imagery also identifies the tubing as all-copper construction and describes the copper as 99.9% pure.
Required tube dimensions, wall thickness and connection method should always be checked against the specific HVAC equipment and installation requirements.
Factory-Prepared Flared Ends with Nuts
Both copper tubes are supplied with flared ends and nuts according to the current product information.
Before connecting the line set, inspect the flare surfaces and verify 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 35 ft 3/8" x 3/4" configuration is identified with 1/2" Black Rubber insulation in the current product information.
The insulation provides a thermal and moisture-control layer around the refrigerant tubing and helps limit condensation on the insulated line.
The current Black Rubber product information lists a temperature range from -40°C to 120°C.
Different insulation configurations are available across the wider product range. Confirm insulation type and thickness for the exact SKU before ordering.
Black Rubber Insulation Features
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 to help control condensation around the tubing.
Temperature Range
The Black Rubber insulation information supplied on the page lists a temperature range from -40°C to 120°C.
Test References
The current product page references ASTM E84, UL94, ASTM D1056 and ASTM G21 for insulation-related testing. Buyers requiring a particular report or classification should confirm which test data apply to the exact insulation configuration being ordered.
What Can Be Included with the Line Set?
The current product information references an installation package that may include communication wire cable, a 3 m drain hose, wall pipe, wall cover and other installation accessories.
Exact package contents should be confirmed for the 35 ft 3/8" x 3/4" SKU before ordering, particularly for distributor, contractor and project purchases.
Available Insulated Copper Line Set Sizes
DABUND supplies multiple copper tube size combinations, insulation thicknesses and line-set lengths 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 3/8" x 3/4" Line Set
Refrigerant line size is determined by the HVAC equipment design and manufacturer specifications. Nominal system capacity alone should not be used as the final selection method.
The current DABUND product information associates 3/8" x 3/4" insulated copper tubing with some approximately 4.5–6 ton or 54,000–72,000 BTU split air-conditioning applications.
This capacity range should be treated only as a general reference. The equipment installation manual governs the required liquid-line size, suction-line size, permitted line length and vertical separation.
When Is a 35 Ft Line Set Appropriate?
A 35 ft line set can be considered when the actual route between the indoor and outdoor equipment requires approximately this amount of refrigerant tubing and the equipment manufacturer permits the length.
Do not choose a longer line set only for convenience without checking the equipment manufacturer's minimum and maximum permitted line lengths.
For longer refrigerant lines, also verify equivalent length, vertical separation and any manufacturer requirements for additional refrigerant or long-line installation procedures.
Before Installing the 35 Ft Copper Line Set
Confirm 3/8" x 3/4" Line Sizes
Verify that the HVAC equipment specifically requires 3/8" and 3/4" refrigerant tubing.
Confirm the Permitted Line Length
Check that 35 ft falls within the minimum and maximum refrigerant-line length specified by the equipment manufacturer.
Check Vertical Separation
If the indoor and outdoor units are at different elevations, verify the maximum permitted vertical separation in the equipment documentation.
Check Refrigerant Charging Requirements
Confirm the refrigerant type, factory charge, included line-length allowance and whether additional refrigerant is required for a 35 ft installation.
Inspect the Flared Ends
Inspect the flare surfaces and nuts before installation and follow the HVAC equipment manufacturer's tightening procedure for compatible flare connections.
Leak Test and Evacuate the System
Complete the required pressure testing, leak checking and evacuation procedures according to the equipment manufacturer's installation instructions before system operation.
HVACR Applications
The 35 ft 3/8" x 3/4" insulated copper line set can be considered for compatible HVACR equipment that specifically requires this tubing combination.
Compatible split air-conditioning systems
Compatible ductless HVAC systems
Compatible heat-pump installations
Compatible VRF applications
HVAC replacement projects requiring 3/8" x 3/4" tubing
New HVAC installations requiring a 35 ft refrigerant line route
Always verify compatibility using the exact HVAC equipment model and installation documentation.
Information to Confirm Before Ordering
HVAC distributors, wholesalers, contractors 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: 35 ft
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 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 tubing 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 different insulation configurations are available, buyers requiring a particular report or classification should confirm the applicable test documentation for the exact product being ordered.
Exhibition
DABUND presents insulated copper line sets and related HVAC installation products at industry exhibitions for international customers and professional buyers.
Frequently Asked Questions
What size is this insulated copper line set?
This product uses 3/8" and 3/4" copper tubing.
How long is this copper line set?
This product is supplied in a 35 ft length.
What insulation is used on the 35 ft 3/8" x 3/4" line set?
The current product information identifies this configuration with 1/2" Black Rubber insulation.
What copper standards are listed?
The current product information identifies ASTM B280 and C12200 DHP references for the copper tubing.
Are the copper tube ends flared?
Yes. The current product information states that both copper tube ends are flared and supplied with nuts.
What is the listed temperature range of the Black Rubber insulation?
The current page lists a Black Rubber insulation temperature range of -40°C to 120°C.
What system capacity commonly uses 3/8" x 3/4" tubing?
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 equipment manufacturer.
Can I use this line set with any 5-ton air conditioner?
Not automatically. Different HVAC models can require different refrigerant tubing sizes even when their nominal capacities are similar. Confirm the required liquid and suction line sizes in the equipment installation manual.
Is a 35 ft line set suitable for every installation?
No. Confirm the minimum and maximum permitted refrigerant-line length and actual routing requirements for the specific HVAC system.
Do I need additional refrigerant with a 35 ft line set?
It depends on the HVAC system. Check the factory refrigerant charge, included line-length allowance and additional refrigerant requirements specified by the equipment manufacturer.
Does vertical separation matter when using a 35 ft line set?
Yes. The permitted vertical separation between indoor and outdoor units is equipment-specific and should be checked in the manufacturer's installation documentation.
Can this copper line set be used with a heat pump?
It can be considered for compatible heat-pump equipment that specifically requires 3/8" x 3/4" refrigerant tubing and permits the selected line length.
Can it be used with VRF equipment?
Only where the applicable VRF system piping design specifically requires this tubing combination. Confirm the manufacturer's piping design 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. Confirm the exact package contents for this 35 ft 3/8" x 3/4" SKU before ordering.
Are other copper line sizes available?
Yes. The current product range includes 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" combinations.
Are different insulation thicknesses available?
Yes. Multiple Black Rubber insulation thickness options are listed across the product range. Confirm the required insulation configuration for the exact order.
Can DABUND provide OEM or ODM insulated copper line sets?
Yes. OEM and ODM requirements can be discussed according to tubing size, insulation configuration, packaging 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.
