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Automotive air conditioning hose (pipe) for R134a 8 mm - 13/32".

The operation of a car's air conditioning system is based on a circulatory system consisting of various components. In this system, a refrigerant (freon) is compressed, liquefied, and releases heat. Then, the refrigerant evaporates again, absorbing heat and cooling the air, which is subsequently supplied to the vehicle's interior through the air ducts.

The individual components of the cooling circuit are connected by a network of flexible hoses (pipes) through which the refrigerant can circulate. Flexible hoses are used throughout the air conditioning system where rigid pipes and connections would be impractical. In the circuit, the pressure and temperature requirements of the refrigerant vary, so the hoses used must meet the corresponding specifications.

Additionally, the hose dimensions often need to be adapted to the specific air conditioning system and usually consist of multiple layers of different plastics. The outer cover of the hose is often made of synthetic rubber with a PET or similar plastic reinforcement embedded. The interior of the hose has a special lining resistant to the refrigerant. Metal mesh covers are sometimes also used.

Complete sealing of the hoses can often be affected by vibrations and engine conditions, and refrigerant can escape from the flexible hoses and other joints of the cooling circuit. Therefore, an annual inspection is recommended, as significant loss of refrigerant can not only reduce performance but also damage the system's compressor, potentially carrying away the refrigerant oil from the crankcase.

View the technical brochure here