C1-02 Danfoss Thermostatic Expansion Valve TDEN8.5T 068H8564 for Bus AC

The C1-02 Danfoss TDEN8.5T thermostatic expansion valve (original part number 068H8564) is a precision throttling component matched for bus and coach air conditioning systems, widely applied to rooftop AC units of city buses, intercity coaches and shuttle vehicles. As one of the four core components of the vapor compression refrigeration cycle, it undertakes throttling depressurization and refrigerant flow regulation, directly affecting cooling efficiency, operation stability and energy consumption of the whole bus AC system.

Installed between the condenser and evaporator, the expansion valve reduces high-pressure liquid refrigerant into low-temperature low-pressure mist before it enters the evaporator, and automatically adjusts refrigerant flow according to superheat at the evaporator outlet, ensuring the evaporator runs in optimal condition and avoiding liquid slugging damage to the compressor.

Core Product Advantages

1. Original Danfoss Precision Manufacturing

   Produced under Danfoss strict industrial quality standards, the internal valve core features high machining accuracy and stable flow regulation performance, maintaining long-term precise throttling control under continuous operation.

2. Sensitive Thermostatic Temperature Control

   Equipped with a high-sensitivity temperature sensing bulb, it quickly detects refrigerant temperature changes at the evaporator outlet and automatically adjusts valve opening to match actual cooling demand, effectively preventing evaporator frosting and compressor liquid return failures.

3. Industrial-Grade Vibration & Corrosion Resistance

   Reinforced valve body structure and metal connecting parts adapt to long-term bumpy bus driving conditions. Sealing components are made of cold and heat resistant materials, suitable for a wide ambient temperature range of -20℃ ~ 60℃.

4. Standard Interface Direct Replacement

   Port sizes, capillary length and installation dimensions fully comply with Danfoss original specifications. It can directly replace the original expansion valve of bus AC units without secondary modification, greatly shortening on-site maintenance time.

5. Eco-Friendly Refrigerant Compatibility

   Compatible with R410A and other mainstream environmentally friendly refrigerants, meeting global HVAC environmental emission standards and matching new energy bus air conditioning system configurations.

Application Scenarios

• 7–12m city bus and tourist coach rooftop air conditioning units

• Bus fleet routine AC maintenance & expansion valve failure replacement

• Bus repair workshop refrigeration system overhaul spare parts stocking

• Bus OEM factory original supporting Danfoss refrigeration accessories

• Global aftermarket bus HVAC spare parts one-stop procurement

With 39 years of professional bus HVAC manufacturing experience, TCHAIN supplies original authentic Danfoss expansion valves and a full range of refrigeration system spare parts compatible with TCD, TCH and TCN series bus air conditioners. We support bulk wholesale, professional technical matching guidance and fast global delivery to reduce your fleet maintenance downtime.