1/2" x 3/4" Mini Split Line Set

1/2" x 3/4" Mini Split Line Set

DABUND 1/2" x 3/4" Mini Split Line Set combines two insulated copper tubes for compatible air conditioning, heat pump and HVACR installations.

The copper tube outside diameters are 1/2" and 3/4", equivalent to approximately 12.7 mm and 19.05 mm. Current product information identifies the copper tubing as ASTM B280 / C12200 DHP and primarily shows Black Rubber insulation.

Available production lengths listed for this product range include 15 m, 20 m, 25 m, 30 m and 50 m, allowing HVAC distributors, contractors and project buyers to select a length according to the installation requirement.

Quick Answer: This page covers the 1/2" x 3/4" insulated copper line set size rather than one fixed length. The listed range includes 15–50 m coils with multiple insulation thickness options.

Compatibility Notice: Confirm the exact liquid-line and suction-line dimensions required by the HVAC equipment before ordering. Do not select a 1/2" x 3/4" line set only from system capacity.

1/2" x 3/4" Mini Split Line Set Specifications

Key Features of 1/2" x 3/4" Insulated Copper Line Set

12.7 mm and 19.05 mm Copper Tube Pair

The nominal 1/2" and 3/4" copper tube outside diameters correspond to approximately 12.7 mm and 19.05 mm.

Whether these dimensions are suitable depends on the exact HVAC equipment. Always verify the manufacturer's refrigerant piping specification before purchasing.

ASTM B280 / C12200 Copper Tubing

Current product information identifies the copper tubing as C12200 DHP copper with ASTM B280 specification available for HVAC and refrigeration piping applications.

Multiple Coil Lengths from 15 m to 50 m

The 1/2" x 3/4" line set can be supplied in multiple listed lengths, including 15 m, 20 m, 25 m, 30 m and 50 m.

This allows distributors and project buyers to choose coil lengths according to installation planning, inventory strategy and local market requirements.

Paired and Insulated Copper Tubes

The two insulated copper tubes are supplied together as a paired line set and are bundled for organized transportation and handling.

OEM Identification Printing

DABUND can discuss customized printing on insulation, including company name, pipe size and length identification, according to the ordered configuration.

Copper Refrigerant Tubing

Black Rubber Insulation

Protective Plastic Cap

Black Rubber Insulation

The current 1/2" x 3/4" product page primarily shows Black Rubber insulated tubing. Closed-cell insulation helps reduce heat transfer between the copper refrigerant lines and the surrounding environment.

Thermal Insulation

The closed-cell insulation structure is designed to reduce unwanted heat transfer around refrigerant piping.

Condensation Control

Properly installed insulation helps limit moisture penetration and reduce surface condensation around refrigerant copper tubing.

Temperature Range

Current product information lists selected insulation configurations with a temperature range of approximately -40°C to 120°C. Confirm the applicable insulation specification for the exact ordered product.

Available Insulation Testing

Current product information references insulation testing or standards including ASTM E84, UL 94, ASTM D1056, ASTM G21, ASTM C1427 and UL 723 for selected configurations. Buyers should confirm which documents apply to the exact insulation material being ordered.

1/2" x 3/4" Black Rubber Copper Line Set

The 1/2" x 3/4" configuration provides paired insulated copper tubing for compatible HVAC installations requiring approximately 12.7 mm and 19.05 mm outside-diameter refrigerant lines.

Because the required copper tube dimensions vary by equipment model, application and manufacturer, compatibility should always be verified from the HVAC equipment technical documentation.

Available Mini Split Line Set Sizes

The current product range lists multiple copper tube combinations, coil lengths and insulation thickness options. The table below preserves the available size information from the original product page.

How to Select a 1/2" x 3/4" Mini Split Line Set

Confirm Both Refrigerant Pipe Sizes

Verify that the HVAC equipment requires 1/2" and 3/4" outside-diameter copper tubing. Similar-capacity systems can use different refrigerant pipe combinations.

Select the Required Coil Length

Choose among the listed 15 m, 20 m, 25 m, 30 m and 50 m lengths according to project requirements and the maximum piping length permitted by the HVAC equipment manufacturer.

Check Maximum Piping Length and Vertical Separation

For longer installations, confirm the equipment manufacturer's maximum actual piping length, equivalent piping length and permitted vertical separation between indoor and outdoor units.

Confirm Refrigerant Charging Requirements

Some HVAC systems include a factory refrigerant charge for only a specified standard piping length. Follow the equipment manufacturer's instructions to determine whether additional refrigerant is required.

Confirm Copper Tube Wall Thickness and Pressure Requirements

Allowable working and test pressure depends on copper tube diameter, wall thickness, material specification and system requirements. Confirm the technical data for the exact line-set configuration rather than applying one pressure value to every size.

Applications

The 1/2" x 3/4" insulated copper line set can be used with compatible HVAC and refrigeration equipment where these exact refrigerant pipe dimensions are specified.

• Compatible split air conditioning systems

• Compatible ductless HVAC systems

• Compatible heat pump installations

• HVACR project piping

• Commercial air conditioning installations

• HVAC distributor and contractor supply

For HVAC Distributors and Project Buyers

DABUND supplies insulated copper line sets to HVAC distributors, wholesalers, importers, contractors and project suppliers requiring different pipe combinations, coil lengths and insulation configurations.

The 1/2" x 3/4" product page functions as a size-specific purchasing reference, with multiple coil lengths available for distribution inventory and project requirements.

OEM and Custom Mini Split Line Sets

DABUND supports OEM and ODM supply according to the required line-set configuration.

• Multiple copper tube combinations

• 15 m, 20 m, 25 m, 30 m and 50 m listed lengths

• Multiple insulation thickness options

• Company-name printing

• Pipe-size identification

• Length or meter marking

• Private-label requirements

Why Choose DABUND Mini Split Line Sets?

HVAC Manufacturing Experience Since 2008

DABUND has manufactured HVAC components since 2008, supplying insulated copper pipes, mini split line sets and related HVAC products for international customers.

Multiple Copper Sizes and Lengths

The product range includes multiple copper tube combinations and coil lengths for different HVAC distribution and installation requirements.

Custom Identification for B2B Orders

Product identification and printing requirements can be discussed for OEM and private-label orders.

DABUND Factory and Export Packaging

DABUND supplies insulated copper pipe, mini split line sets and related HVAC components for international B2B customers.

Insulation Testing and Product Documentation

Current product information references ASTM E84, UL 94, ASTM D1056 and ASTM G21 for selected insulation configurations. Applicable reports and material scope should be confirmed for the exact product being ordered.

International HVAC Exhibitions

DABUND participates in international exhibitions to present mini split line sets, insulated copper tubing and related HVAC products to professional buyers.

Frequently Asked Questions

What size is the 1/2" x 3/4" mini split line set in millimeters?

The nominal outside diameters are approximately 12.7 mm for the 1/2" tube and 19.05 mm for the 3/4" tube.

What copper specification is used?

Current product information identifies the copper tubing as C12200 DHP and references ASTM B280.

What lengths are available for the 1/2" x 3/4" line set?

Listed production lengths include 15 m, 20 m, 25 m, 30 m and 50 m.

What insulation is used on this line set?

The current product page primarily presents Black Rubber insulated tubing. Other insulation configurations appear in the broader product range and should be confirmed when ordering.

What insulation thicknesses are available?

Current product information lists 8 mm, 9 mm, 10 mm, 13 mm, 19 mm and 25.4 mm insulation thickness options according to configuration.

Is the 1/2" x 3/4" line set suitable for every mini split system?

No. HVAC systems use different refrigerant pipe dimensions. Verify that the equipment manufacturer specifies 1/2" and 3/4" outside-diameter refrigerant tubing before ordering.

Can I select the line set only by BTU capacity?

No. Similar-capacity systems can require different copper tube sizes. The equipment installation manual should be used to confirm the required liquid and suction line dimensions.

Can I use a 50 m line set on any compatible-size HVAC system?

Not automatically. Even when the copper diameters match, the HVAC equipment manufacturer may limit actual piping length, equivalent length and vertical separation.

Does a longer line set require additional refrigerant?

It may. Refrigerant charging requirements depend on the equipment manufacturer's factory-charge allowance and specified piping length.

What pressure can the copper tubing handle?

Allowable working and test pressure depends on copper tube diameter, wall thickness, material specification and the selected configuration. Confirm the applicable technical data for the exact product and HVAC system.

Can DABUND print my company name on the insulation?

Yes. Current product information states that company name, pipe size, length and related identification can be printed according to order requirements.

Can I get samples before placing a bulk order?

Yes. According to the current product information, DABUND can provide three sample pieces, with the buyer covering express shipping costs. 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?

Current product information lists a typical delivery period of approximately 15–20 days. Actual lead time depends on order quantity, product specification, customization and production schedule.