Auto AC Hose: Premium Quality for Reliable Car Air Conditioning

The 28mm auto air conditioning hose represents a critical heavy-duty component specifically engineered for bus climate control systems. This large-diameter hose is designed to handle substantial refrigerant flow rates required for cooling voluminous passenger compartments in city transit buses, intercity coaches, and school buses. Manufactured from advanced multi-layer polymer materials reinforced with textile or spiral steel wire, it maintains structural integrity under high-pressure conditions while resisting permeation of modern refrigerants like R-134a and R-1234yf. The internal tube typically utilizes nylon or specialized rubber compounds compatible with PAG and ester oils, ensuring long-term material stability. For bus fleets operating in extreme climates, these hoses feature enhanced UV resistance and ozone protection to prevent cracking from continuous thermal cycling. Installation scenarios include original equipment manufacturing where hoses are custom-cut and assembled to precise vehicle specifications, as well as maintenance replacements in service centers. A practical application case involves municipal transit authorities implementing preventive replacement programs during scheduled maintenance, significantly reducing roadside breakdowns during peak summer months. The hose ends incorporate specialized SAE or metric fittings with robust crimping systems that maintain seal integrity despite constant vibration from diesel engines. When selecting 28mm bus AC hoses, technicians must verify material certifications against OEM standards and ensure proper evacuation procedures during installation to prevent moisture contamination. We provide customized solutions with various connection configurations and length options to match specific bus models and routing requirements. For detailed technical specifications and commercial inquiries regarding our 28mm bus air conditioning hoses, please contact our engineering support team for comprehensive assistance.