Explore our foundational range of engineered accessories designed for maximum efficiency and system longevity.
Within any sealed refrigeration or air conditioning loop, the liquid line filter drier is critical. Its function is to protect the expansion valve and compressor from harmful elements: moisture, acids, and solid particles. Even trace amounts of moisture can freeze at the expansion orifice, blocking refrigerant flow, and react with POE, PAG, or mineral oils to create hydrochloric or hydrofluoric acids. These acids degrade motor winding insulation, causing compressor burnouts.
As the global market transitions to low-GWP (Global Warming Potential) refrigerants like R32, R290 (propane), CO2 (R744), and HFO blends, the physical requirements for filter driers have changed significantly. Modern eco-friendly refrigerants have different chemical behaviors and compatibility rules with lubricants. They require precise molecular sieves to prevent chemical breakdown and maintain systemic efficiency.
Taojun Refrigeration has spent over 35 years refining desiccant and filtration technology. We design filter driers that offer high adsorption capacity and structural durability. This protects modern HVACR systems from chemical degradation and premature failure.
Industrial buyers and appliance manufacturers prioritize compliance, material traceability, and custom design options when sourcing filtration components.
Components must meet international regulatory standards. Taojun holds ISO 9001:2015, GB/T19001-2016, UL certifications, and EU RoHS/REACH compliance to guarantee environmental safety and reliable operation.
Modern refrigerants require highly efficient water-retention desiccants. We use 100% 3A molecular sieves, which selectively adsorb water molecules while excluding refrigerant molecules, preventing structural degradation.
System configurations often require customized connection types, shell lengths, or integrated service ports. Our engineers design, build, and prototype customized variations tailored to your specifications.
Ningbo Taojun Refrigeration Equipment Co., Ltd. operates a highly automated production facility. Our core production equipment is imported from Germany, and we use a modern MES (Manufacturing Execution System) to track every step of production, from raw materials to final shipment.
By using automated precision cutting, orbital welding, and robotic loading, we minimize human error and ensure uniform consistency across large production batches. Our 10,000-square-meter facility maintains a stable raw material inventory, helping protect global clients from supply chain disruptions.
Our raw material specifications are strictly monitored. We import high-grade copper piping and raw materials from trusted suppliers in Japan and Europe. This ensures our components can withstand the higher operating pressures of eco-friendly refrigerants without degradation.
Intelligent Workshop
Assembly Line
R&D Testing Lab
Founded in 1988 as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, Ningbo Taojun Refrigeration Equipment Co., Ltd. has developed into a comprehensive manufacturer integrating design, production, sales, and after-sales service. In 2021, Taojun was recognized as a National High-Tech Enterprise.
We work closely with researchers from the University of Science and Technology of China (USTC) to continuously improve our products. Our core product catalog includes copper filter driers, check valves, air conditioning split valves, condensers, and precision brass fittings. Today, our "Lingshan" and "Taojun" brands are trusted by major domestic and international brands like Haier, Midea, Gree, Whirlpool, and Electrolux.
Our company values—Honesty, Innovation, Responsibility, and Cooperation—guide how we work. We focus on resource integration and precision engineering to help our partners succeed in global markets.
Our filters undergo rigorous testing to ensure high reliability and a low defect rate in demanding conditions.
Every Taojun copper filter drier is built to clean and protect refrigeration loops:
Our quality control department tests every batch to verify structural limits and performance:
| Filter Drier Model / Type | Body Material | Desiccant Charge (g) | Compatible Refrigerants | Connection Sizes (Inlet/Outlet) | Burst Pressure Rating |
|---|---|---|---|---|---|
| TJ-DF-10G (Standard) | TP2 Copper (≥99.9%) | 10g (3A Sieve) | R134a, R600a, R290, R22 | 1/4", 3/16", Capillary Capable | > 6.0 MPa |
| TJ-DF-15G (Medium) | TP2 Copper (≥99.9%) | 15g (3A Sieve) | R134a, R290, R410A, R32 | 1/4", 5/16", Capillary Capable | > 6.0 MPa |
| TJ-DF-20G (High Cap) | TP2 Copper (≥99.9%) | 20g (3A + Carbon) | R134a, R404a, R407c, R22 | 1/4", 3/8", 5/16" | > 5.5 MPa |
| TJ-AL-DRIER (Aluminium) | Aluminium Alloy | 15g-30g Molecular | R134a, R600a, R290 | Custom ODF/SAE Soldered | > 5.0 MPa |
Our filter driers are designed to handle moisture and contaminants in many applications, from home appliances to commercial cold storage.
Our copper filters are widely used in home refrigerators, freezers, and beverage coolers. They keep domestic systems running quietly and efficiently for up to 10 years without requiring maintenance.
In supermarkets, commercial display cabinets, and walk-in cold rooms, system downtime can lead to inventory loss. Our robust filter driers manage fluctuating temperatures and higher moisture levels to help prevent compressor damage.
With the rise of electric vehicles, efficient thermal management is critical. We supply lightweight aluminum filter driers and receivers that are vibration-resistant, helping preserve EV battery range and cabin comfort.
We work to maintain high standards of quality and traceability across our entire product range. Taojun Refrigeration is officially certified under GB/T19001-2016 / ISO9001:2015 (Registration Number: 41325Q00065R0S), covering the design, manufacture, and distribution of refrigeration components.
Our quality management system is verified through CNCA-approved auditors (Zhongci International Certification). We document all steps of development, raw material inspections, welding, and pressure testing, allowing us to maintain a low scrap rate and supply reliable components to OEMs worldwide.
Common questions from design engineers and HVACR procurement professionals regarding application, performance, and material choices.
Explore our selection of specialized connection accessories, charging solutions, and control elements.
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