2PCS Air Conditioning AC Fitting Set，#8#10 180°Stright A/C Hose Adapter, Aluminum Air Conditioning Hose Fittings with R134a Pressure Valve(Red-High,Blue-Low)

Automotive A/C High-Pressure & Low-Pressure Hose fitting– Precision Engineered for Professional HVAC Maintenance:Our premium aluminum A/C hose connectors are specifically designed to withstand the demanding conditions of automotive air conditioning systems, ensuring safe refrigerant handling and reliable system diagnostics. HIGH-PRESSURE CONNECTOR FEATURES:Built to endure extreme operating conditions, our high-pressure connectors withstand system pressures of 1.5–2.5 MPa (15–25 bar) commonly found between the compressor discharge, condenser, receiver-dryer, and expansion valve. The robust construction prevents refrigerant leakage even under continuous thermal stress. Each connector features integrated Schrader valves or quick-connect fittings, serving as essential diagnostic access points for pressure gauge connection, system evacuation, and refrigerant charging operations. LOW-PRESSURE CONNECTOR FEATURES:Engineered for the suction side operating at 0.1–0.3 MPa (1–3 bar), these connectors connect evaporator outlets to compressor intake lines, facilitating the return of gaseous refrigerant for compression cycling. Despite lower pressure requirements, our precision seals maintain exceptional leak-proof performance. The dedicated service ports enable technicians to monitor suction pressure, detect refrigerant deficiencies, and assess expansion valve functionality. ALUMINUM CONSTRUCTION ADVANTAGES:Crafted from high-grade aluminum alloy, these connectors deliver significant benefits: lightweight design reduces overall vehicle weight; natural corrosion resistance through protective oxide formation; and enhanced thermal conductivity supporting efficient heat exchange. Additional zinc or nickel plating provides superior protection against harsh under-hood environments. SAFETY & ERROR-PREVENTION DESIGN Our ac line connectors incorporate physically differentiated port sizes and configurations, eliminating dangerous cross-connection risks during maintenance. Color-coded dust caps (red for high-pressure, blue/black for low-pressure) ensure instant identification. This intelligent design prevents catastrophic equipment damage from pressure mismatches and protects technicians from high-pressure blowouts. DIAGNOSTIC APPLICATION:Dual-port pressure monitoring enables rapid system assessment: elevated high-pressure indicates condenser airflow restrictions or overcharge conditions; depressed low-pressure signals leaks or expansion valve blockages; balanced low readings on both sides suggest compressor inefficiency. These insights streamline troubleshooting and reduce diagnostic time. Professional-Grade Reliability:Whether performing routine maintenance, refrigerant recovery, or complex repairs, our aluminum A/C connectors provide the durability, precision, and safety that automotive HVAC professionals demand. Compatible with R-134a and R-1234yf systems.Automotive A/C High-Pressure & Low-Pressure Hose fitting– Precision Engineered for Professional HVAC Maintenance:Our premium aluminum A/C hose connectors are specifically designed to withstand the demanding conditions of automotive air conditioning systems, ensuring safe refrigerant handling and reliable system diagnostics. HIGH-PRESSURE CONNECTOR FEATURES:Built to endure extreme operating conditions, our high-pressure connectors withstand system pressures of 1.5–2.5 MPa (15–25 bar) commonly found between the compressor discharge, condenser, receiver-dryer, and expansion valve. The robust construction prevents refrigerant leakage even under continuous thermal stress. Each connector features integrated Schrader valves or quick-connect fittings, serving as essential diagnostic access points for pressure gauge connection, system evacuation, and refrigerant charging operations. LOW-PRESSURE CONNECTOR FEATURES:Engineered for the suction side operating at 0.1–0.3 MPa (1–3 bar), these connectors connect evaporator outlets to compressor intake lines, facilitating the return of gaseous refrigerant for compression cycling. Despite lower pressure requirements, our precision seals maintain exceptional leak-proof performance. The dedicated service ports enable technicians to monitor suction pressure, detect refrigerant deficiencies, and assess expansion valve functionality. ALUMINUM CONSTRUCTION ADVANTAGES:Crafted from high-grade aluminum alloy, these connectors deliver significant benefits: lightweight design reduces overall vehicle weight; natural corrosion resistance through protective oxide formation; and enhanced thermal conductivity supporting efficient heat exchange. Additional zinc or nickel plating provides superior protection against harsh under-hood environments. SAFETY & ERROR-PREVENTION DESIGN Our ac line connectors incorporate physically differentiated port sizes and configurations, eliminating dangerous cross-connection risks during maintenance. Color-coded dust caps (red for high-pressure, blue/black for low-pressure) ensure instant identification. This intelligent design prevents catastrophic equipment damage from pressure mismatches and protects technicians from high-pressure blowouts. DIAGNOSTIC APPLICATION:Dual-port pressure monitoring enables rapid system assessment: elevated high-pressure indicates condenser airflow restrictions or overcharge conditions; depressed low-pressure signals leaks or expansion valve blockages; balanced low readings on both sides suggest compressor inefficiency. These insights streamline troubleshooting and reduce diagnostic time. Professional-Grade Reliability:Whether performing routine maintenance, refrigerant recovery, or complex repairs, our aluminum A/C connectors provide the durability, precision, and safety that automotive HVAC professionals demand. Compatible with R-134a and R-1234yf systems.

• Longer service life: The primary material used in our Air conditioner hose fitting is aluminum. And Zinc and nickel coatings provide a protective barrier that prevents oxidation and corrosion, especially in harsh environments.So these #8 #10 ac fittings with high and low pressure fitting will extended usage time on your vehicle
• Advantages: Compared with low-hardness plastic and heavier stainless steel, aluminum fittings contribute to overall vehicle weight reduction, meeting the automotive lightweighting trend.Good thermal conductivity facilitates heat exchange between the pipeline and the external environment
• High and low pressure Kit: This air conditioning fitting kit include #8 straight (high pressure)and #10 straight(low pressure) which marked in different colors that used to prevent incorrect connection of charging equipment or pressure gauges during maintenance, avoiding dangers caused by pressure mismatch
• Right Operation : When charging refrigerant, gaseous refrigerant is typically added from the low-pressure side; the high-pressure side is used for recovery or liquid charging (requires professional operation). Properly distinguishing the interfaces ensures operational safety
• Attention: Due to the low strength of aluminum AC fitting threads, avoid excessive force when tightening. Follow standard torque specifications (typically 10–20 N·m) And check these A/C line fitting if there is any dirt/grass in the tubing and clean it before installing or risk destroying your ac system