Copper Couplings

Category Overview

Copper couplings are brazeable fittings used to join two copper tubes securely and leak-tight in air conditioning, refrigeration, heating and industrial piping systems. Thanks to their high pressure resistance, excellent thermal conductivity and long service life, they are an indispensable part in the HVAC sector. At Yedepa.com we stock a wide range of copper couplings, from 1/4" (6 mm) up to 1 3/8" (35 mm), that service engineers, refrigeration technicians and air conditioning installers need in field conditions. Using a coupling of the correct size and quality prevents refrigerant leaks, extends compressor life and significantly reduces call-backs after service.

Products You Can Find in This Category

Our category includes brazeable copper couplings to meet every size requirement, from split air conditioner indoor-outdoor unit connections to cold room piping, and from supermarket refrigeration to industrial chiller lines. All our products are rated for high pressure and are compatible with modern refrigerants such as R32, R410A and R134a. The main product types we keep in stock are:

• Copper Coupling 1/4" - 6 mm: Used on thin gas lines and the liquid lines of small-capacity split air conditioners.
• Copper Coupling 1/2" - 12 mm: A common choice for the gas lines of medium-capacity air conditioning and refrigeration systems.
• Copper Coupling 5/8" - 15 mm: Stands out on the main lines of VRF systems and large split air conditioners.
• Copper Coupling 3/4" - 18-19 mm: Frequently used in commercial refrigeration and supermarket cabinet installations.
• Copper Coupling 1 3/8" - 35 mm: Preferred in industrial refrigeration, chillers and large-capacity HVAC systems.

Selection Criteria and Tips

The first criterion to consider when choosing the right copper coupling is the outside diameter of the tube you will be joining. Because sizes in the trade are expressed in both inches and millimetres, it is critical to match equivalents such as 1/4" - 6 mm, 1/2" - 12 mm or 5/8" - 15 mm correctly. The second criterion is the operating pressure of the system: with high-pressure refrigerants such as R410A and R32, thick-walled copper couplings rated for high pressure must always be used. Purging nitrogen through the tube during brazing to prevent oxidation has become standard practice in professional work to keep the refrigerant line clean. Also make sure the inside surface of the coupling is clean and free of burrs and dust; otherwise capillary blockage and subsequent compressor failures can become inevitable.

Copper Couplings at Yedepa.com

Yedepa.com has for years been an address trusted by technicians and service companies for household appliance, air conditioning and HVAC spare parts supply. All products in our copper coupling category are dispatched quickly from stock, and B2B price advantages are offered to our dealer and service customers. Whether you need a single 1 3/8" - 35 mm coupling or want to build a service set covering all sizes, Yedepa.com's wide product range and technical support team are always at your side. On our category page you can compare product sizes, review the technical specifications and order the right part with confidence.