Three-color AC refrigerant hoses are essential professional accessories for air conditioner installation, refrigerant charging, pressure testing and system maintenance. Matched perfectly with manifold gauge sets, these color-coded hoses are designed for safe and efficient transmission of various refrigerants in automotive AC, household refrigeration and commercial HVAC systems. Adopting premium multi-layer composite rubber and reinforced braided structure, each hose features excellent pressure resistance, air tightness and refrigerant compatibility. Standard red, blue and yellow color classification corresponds to high pressure, low pressure and vacuum/charging ports respectively, effectively avoiding connection errors during operation. Widely used by refrigeration technicians and engineering teams, it is a standard tool for standardized and efficient HVAC system maintenance.
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