High-durability HVAC parts precision-engineered by Taojun Refrigeration. Explore our catalog below.
Established in 1988, the predecessor of Ningbo Taojun Refrigeration Equipment Co., Ltd. was the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Situated in Ningbo, Zhejiang province, our company has evolved over three decades into a leading national high-tech enterprise dedicated to the design, research and development, manufacturing, and distribution of high-performance refrigeration accessories.
Our core product portfolio includes copper filter driers, check valves, air conditioning split service valves, condensers, brass and copper tube fittings, and specialized refrigeration consumables. Through rigorous scientific management, Taojun has secured key certifications including ISO 9001:2015, EU RoHS, and US UL listings, establishing our "Lingshan" brand as an industry benchmark in China and internationally.
The global refrigeration and HVAC market demands components that guarantee zero leakage, high moisture absorption, and acid filtration capacity to safeguard compressors from corrosion. Here is how Ningbo Taojun delivers unmatched technological superiority:
Our core production lines incorporate high-precision equipment sourced directly from Germany. Automated processing limits human error, providing consistent product dimensions and precise structural integrity.
Our research and development team comprises 15 engineers, including doctoral researchers and professors from the University of Science and Technology of China, working on advanced thermodynamic materials.
We source our ITO film and liquid crystal spacers directly from Japan to ensure zero shrinkage and uniform alignment. Structural adhesives are sourced from premier European suppliers, rated for extreme heat resistance (80-90°C).
To assure compliance with global standards, Taojun enforces testing parameters that exceed standard regulatory practices. Our finished copper drier filters undergo:
A refrigerator filter drier is a crucial safety component in any vapor-compression refrigeration loop. When capillary tubes or expansion valves experience microscopic blockages due to solid contaminants or frozen moisture droplets, the compressor's thermal load spikes, risking catastrophic motor failure. Below is the structural composition that enables Taojun filter driers to prevent these failures:
Shell Material: Built with deoxidized high-purity copper tube. Copper provides superior thermal conductivity, ease of soldering during installation, and exceptional natural corrosion resistance against ambient atmosphere and chemical solvents.
3A Molecular Sieve: Unlike generic desiccant materials, our filters utilize high-grade 3A molecular sieves (Zeolite). With an average pore diameter of 3 Angstroms, it absorbs water molecules efficiently while completely excluding refrigerant molecules (like R134a, R600a, or R290). This prevents co-adsorption and maintains high absorption capacity (exceeding 20% water absorption weight ratio).
Activated Carbon Integration: For complex applications, an active carbon layer is blended inside the core to absorb organic acids, varnish, and wax impurities formed from lubricating oil degradation under high thermal compression.
Over three decades, our engineering capacity has earned the trust of premier global home appliance manufacturers. We work closely as an OEM/ODM supplier for brands such as Haier, Midea, Gree, Whirlpool, Electrolux, and Huarui. Whether it is custom dimensions, dual-inlet ports, or special mounting brackets, our factory delivers tailor-made solutions aligned with automated assembly line requirements.
Transparent insights into our ISO 9001:2015 certified production environment, modern test labs, and quality certifications.
The global HVAC and commercial cooling sector is experiencing massive transformations driven by environmental regulations. The phase-down of hydrofluorocarbons (HFCs) under the Kigali Amendment has accelerated the adoption of natural refrigerants like Hydrocarbons (Propane R290, Isobutane R600a) and Carbon Dioxide (R744). These transitions present major design challenges:
Modern eco-friendly refrigerants often run under higher pressure profiles compared to older generation gases. Taojun has restructured the wall thickness profile of its copper shells and transitioned to automated argon arc welding, ensuring our copper filters can handle burst pressures up to three times their operational limits.
Synthetic lubricants (specifically Polyolester or POE oils) used with eco-friendly gases are highly hygroscopic. If moisture leaks inside the system, the water reacts with POE oil to trigger hydrolysis, producing organic acids that eat away at winding insulation on the compressor motor. Our high-affinity molecular sieves are optimized specifically to isolate free-water molecules rapidly before hydrolysis can take place.
With warehouse costs climbing, international home appliance brands require fast lead times and dependable shipping schedules. Situated near the deep-water Port of Ningbo, Taojun provides strategic logistics advantage. Integrated MES (Manufacturing Execution System) scheduling keeps production transparent, offering real-time order tracking from raw copper extrusion to vessel boarding.
Technical explanations to common queries related to design, sizing, and optimization of refrigeration filter driers.
Optimize your supply chain with our certified line of air conditioning, electrical controls, and brazing supplies.
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