Dongfeng VL truck parts Connected evaporator inlet air conditioning pipeline assembly 8108040-C4200

Built to optimize the air conditioning system’s cooling efficiency, this pipeline assembly features a smooth inner wall design and low-flow-resistance structure. Crafted from seamless aluminum alloy (6063-T5), the pipeline has an inner surface roughness of Ra ≤0.4μm, reducing refrigerant flow resistance by 25% compared to traditional steel pipelines. It supports a maximum refrigerant flow rate of 8L/min, ensuring rapid transmission of low-temperature refrigerant from the condenser to the evaporator—lowering the cab temperature from 45℃ to 25℃ in 8 minutes, 30% faster than inefficient pipelines. The precise inner diameter tolerance (±0.05mm) maintains stable refrigerant pressure (0.2-0.8MPa), preventing cooling performance degradation caused by pressure loss

Engineered to eliminate refrigerant leakage—a common issue in air conditioning systems—the assembly features precision-machined connection interfaces. The pipeline ends adopt flared joints (SAE J513 standard) with a 45° taper, achieving a tight fit with the evaporator and compressor connectors. Each joint is equipped with a nitrile rubber O-ring (Shore hardness 70±5) and stainless steel clamp (torque 15-18N·m), forming a dual-seal structure that reduces leakage rate to ≤0.01g/year, far below the SAE J2776 standard limit. The aluminum alloy pipeline withstands a burst pressure of 3.5MPa and operating pressure of 0.2-1.2MPa, ensuring no deformation or rupture even under extreme temperature fluctuations (-40℃ to 120℃)

Designed to endure the harsh conditions of heavy-duty truck engine compartments, the pipeline assembly exhibits exceptional corrosion and wear resistance. The aluminum alloy pipeline undergoes anodizing treatment (oxide layer thickness 10μm) and is coated with anti-corrosion paint, resisting chemical corrosion from engine oil, coolant, and road de-icing agents. The outer surface is wrapped in a flame-retardant EPDM foam sleeve (UL94 V-0 rating), which absorbs vibration and prevents abrasion from contact with metal components. It passes 1500-hour salt spray testing (ASTM B117) with no oxidation, and 500-hour vibration testing (ISO 16750-3) without foam sleeve detachment, ensuring durability for ≥200,000km

Optimized for efficient fleet maintenance, the pipeline assembly features a user-friendly design that simplifies installation and reduces downtime. Its pre-formed bends eliminate on-site bending, ensuring precise alignment with the evaporator and compressor mounting points. The assembly comes with pre-installed mounting clips and brackets that fit the original engine compartment holes, securing the pipeline and preventing vibration-induced displacement. Installation requires only a flaring tool and torque wrench, with two technicians completing the process in 60 minutes—40% faster than non-OE pipelines. The smooth inner wall minimizes refrigerant impurity accumulation, reducing system cleaning frequency by 50%. Backed by a 1-year/100,000km warranty, it ensures reliable cooling performance for long-haul and heavy-duty operations