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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 1/4" x 1/2" Insulated Copper Tube
DABUND 35 Ft 1/4" x 1/2" Insulated Copper Tube is a pre-insulated copper line set for compatible HVACR and split air-conditioning systems requiring 1/4-inch and 1/2-inch refrigerant tubing.
This configuration is supplied with 1/2" Black Rubber insulation according to the current product information. Both copper tubes have factory-prepared flared ends and nuts for compatible flare-type HVAC connections.
The copper tubing is identified with ASTM B280 and C12200 DHP references. The 35 ft configuration is intended for installations where the actual HVAC equipment permits the 1/4" x 1/2" tubing combination and selected piping length.
Quick Answer: This is a 35 ft 1/4" x 1/2" pre-insulated copper line set with 1/2" Black Rubber insulation, flared copper tube ends and nuts for compatible HVACR installations.
Compatibility Notice: The current DABUND product information associates 1/4" x 1/2" tubing with some approximately 1.5–2 ton or 12,000–18,000 BTU mini split systems. This is a general selection reference only. The actual equipment manufacturer's required refrigerant line sizes always govern.
35 Ft 1/4" x 1/2" Copper Line Set Specifications
| Product Type | Pre-Insulated Copper Tube / Copper Line Set |
| Tube Size | 1/4" x 1/2" |
| 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 |
| General Capacity Reference | Some 12K–18K BTU / approximately 1.5–2 ton systems; actual equipment specifications govern |
| Typical Application | Compatible HVACR and split AC systems requiring 1/4" x 1/2" refrigerant tubing |
35 Ft Pre-Insulated Copper Line Set
The 35 ft line set combines 1/4" and 1/2" copper tubing with factory-applied Black Rubber insulation for compatible HVAC installations.
Pre-insulated construction reduces the need to separately apply insulation around the refrigerant piping at the installation site and provides a ready-to-install insulated tubing configuration.
The 35 ft length can be considered for medium-to-long indoor-to-outdoor piping routes where this length remains within the equipment manufacturer's permitted refrigerant-line range.
ASTM B280 and C12200 Copper Tubing
DABUND identifies the copper tubing in this product range with ASTM B280 and C12200 DHP references for HVACR copper tube applications.
The current product information also describes the tubing as all-copper construction and identifies the copper as 99.9% pure.
Required tube dimensions, wall thickness and operating requirements should still be verified against the actual HVAC equipment and project specifications.
Factory-Prepared Flared Ends with Nuts
Both copper tube ends are supplied with factory-prepared flares and nuts according to the current product information.
Before installation, inspect the flare surfaces and verify that the flare dimensions, nuts and connection method match the equipment service valves.
Copper Tube
Black Rubber Insulated Pipe
Flared Ends
1/2" Black Rubber Insulation
This 35 ft 1/4" x 1/2" 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 copper tubing and helps limit condensation on the insulated refrigerant line.
The current Black Rubber product information lists an operating temperature range from -40°C to 120°C.
Different insulation configurations are available across the wider product range. Confirm the exact insulation material and thickness for the product being ordered.
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 functioning as both an insulation layer and a moisture-control layer to help manage condensation around the copper tubing.
Temperature Range
The supplied Black Rubber insulation information lists a temperature range from -40°C to 120°C.
Test References
The current product information references ASTM E84, UL94, ASTM D1056 and ASTM G21 for insulation-related testing. Buyers requiring a particular report or classification should confirm which documentation applies to the exact insulation configuration being ordered.
Installation Accessories
The current product information references a line-set package that can include the insulated copper tubing together with communication wire cable, a 3 m drain hose, wall pipe, wall cover and other installation parts.
Exact package contents should be confirmed specifically for the 35 ft 1/4" x 1/2" SKU before ordering, especially 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 |
Note: The table above represents the wider DABUND product family. This page specifically covers the 35 ft 1/4" x 1/2" configuration with 1/2" Black Rubber insulation.
1/4" x 1/2" Line Set for Compatible 12K–18K Systems
The current DABUND product information associates the 1/4" x 1/2" tubing combination with some approximately 1.5–2 ton or 12,000–18,000 BTU mini split air-conditioning systems.
This should be treated as a general product-family reference rather than a universal compatibility rule.
Different HVAC models with similar nominal capacity can require different refrigerant line sizes. Always verify the required liquid and suction line dimensions in the equipment manufacturer's installation documentation.
Important Checks for a 35 Ft Refrigerant Line
Confirm the Required Tube Sizes
Verify that the HVAC equipment specifically requires 1/4" and 1/2" refrigerant tubing.
Check Maximum Permitted Line Length
Confirm that a 35 ft refrigerant piping route remains within the maximum piping length permitted by the actual equipment manufacturer.
Check Minimum Permitted Line Length
Some HVAC systems specify a minimum refrigerant-line length. Follow the equipment manufacturer's instructions when the actual route is shorter than the supplied line set.
Confirm Vertical Separation
If the indoor and outdoor units are installed at different elevations, check the maximum permitted vertical separation for the actual system.
Check Refrigerant Charge Requirements
Check the equipment factory charge and the piping length included in that charge. Follow the HVAC manufacturer's instructions if refrigerant adjustment is required for the installed line length.
Check Long-Line Requirements When Applicable
If the equipment manufacturer publishes additional requirements for longer refrigerant piping, follow those instructions for the actual installation.
How to Install a 35 Ft 1/4" x 1/2" Copper Line Set
Step 1: Confirm Equipment Compatibility
Check the indoor and outdoor equipment model numbers and verify that 1/4" x 1/2" is the required refrigerant-line size.
Step 2: Plan the Refrigerant Piping Route
Plan the route between the indoor and outdoor equipment and verify that the selected 35 ft length complies with the manufacturer's piping limits.
Step 3: Inspect the Copper Tube and Insulation
Inspect the tubing and Black Rubber insulation before installation and avoid crushing, sharp bends or insulation damage during routing.
Step 4: Inspect the Flared Ends
Check the factory-prepared flare surfaces and nuts before connecting them to compatible equipment service valves.
Step 5: Make the Refrigerant Connections
Follow the HVAC equipment manufacturer's flare-joint connection and tightening requirements.
Step 6: Leak Test and Evacuate
Complete the required leak testing and evacuation procedures according to the equipment manufacturer's installation instructions before system operation.
Step 7: Confirm Refrigerant Charge
Confirm that the refrigerant charge and installed piping length comply with the equipment manufacturer's requirements before commissioning.
HVACR Applications
The 35 ft 1/4" x 1/2" insulated copper line set can be considered for compatible HVACR systems that specifically require this tubing combination and permit the selected piping length.
Compatible ductless mini split systems
Compatible split air-conditioning systems
Compatible heat-pump installations
HVAC systems requiring 1/4" x 1/2" refrigerant tubing
Some compatible 12K–18K BTU applications
Medium-to-long indoor-to-outdoor refrigerant piping routes
Compatibility must always be verified using the exact HVAC equipment model and installation documentation.
Information to Confirm Before Ordering
HVAC distributors, wholesalers, contractors and professional buyers should confirm the following information before ordering:
Required copper tube size: 1/4" x 1/2"
Required line-set length: 35 ft
HVAC equipment model
Minimum and maximum permitted piping length
Vertical separation requirements
Required insulation type and thickness
Required package accessories
Order quantity
Packaging requirements
OEM or private-label requirements
DABUND Insulated Copper Tube 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 HVAC distributors, wholesalers, 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, aluminum pipe 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 materials and configurations are available, buyers requiring a specific report or classification should confirm that the requested test documentation applies to the exact Black Rubber insulation configuration 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 1/4" and 1/2" 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 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. Both copper tube ends are described as factory-flared and supplied with nuts.
What is the listed temperature range for the Black Rubber insulation?
The current product information lists a Black Rubber insulation temperature range of -40°C to 120°C.
What system capacity commonly uses 1/4" x 1/2" tubing?
The current DABUND product information associates 1/4" x 1/2" tubing with some approximately 1.5–2 ton or 12,000–18,000 BTU mini split air-conditioning systems. This is only a general reference.
Can this line set be used with every 12,000 or 18,000 BTU mini split?
No. Different HVAC models can require different refrigerant line sizes even when nominal capacities are similar. Confirm the required tubing sizes in the equipment installation manual.
Is 35 ft suitable for every HVAC installation?
No. Confirm that 35 ft falls within the minimum and maximum refrigerant piping lengths permitted by the actual HVAC equipment manufacturer.
Does a 35 ft line require additional refrigerant?
It depends on the HVAC system. Check the factory refrigerant charge, included piping-length allowance and any refrigerant adjustment instructions provided by the equipment manufacturer.
Does vertical separation matter?
Yes. Confirm the permitted elevation difference between indoor and outdoor units in the equipment 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 1/4" x 1/2" refrigerant tubing and permits the selected line length.
Can this line set be used with VRF equipment?
Only where the applicable VRF system design specifically requires this tubing combination and permits the selected piping configuration.
What accessories can be supplied with this line set?
The current product information references communication wire cable, a 3 m drain hose, wall pipe, wall cover and other installation parts. Confirm the exact package contents for this 35 ft 1/4" x 1/2" SKU before ordering.
Are other copper tube 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.
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, product configuration, customization and production schedule.
