Within thermodynamic cycles, moisture is the primary catalyst for system failure. In HVAC and cooling cycles, even minor traces of atmospheric moisture lead to chemical hydrolysis, generating hydrofluoric and hydrochloric acids when combined with synthetic refrigerants like HFCs, HFOs, and hydrocarbon blends (such as R134a, R32, R410A, and R290). This chemical process results in sludge generation, insulation breakdown in hermetic compressors, and capillary tube restriction.
As a leading China refrigeration dryer factory and manufacturer, Ningbo Taojun has spent nearly four decades addressing this technical vulnerability. By incorporating premium-grade 3A molecular sieves within high-grade copper shells, we create a moisture-absorbing protective barrier that preserves the chemical equilibrium of cooling mechanisms. Our filtration technology ensures minimal pressure drops while optimizing system efficiency.
Navigating the complex phase-outs of traditional F-gases requires component-level adaptation. Our engineering department outlines the industry's technological shift below.
The global shift toward eco-friendly refrigerants like R290 (propane) and R32 demands high-strength, leak-free copper structures. Our filter driers are designed to withstand elevated pressures without compromising adsorption properties.
Integrating physical adsorption kinetics with high-grade desiccant matrices allows our filter driers to maintain a high moisture retention rating (≥20% moisture capture ratio) even in high ambient temperatures.
Using automated argon arc welding rather than standard brazing prevents heat-induced oxidation inside the copper shell, preserving the chemical purity of the desiccant and molecular sieve matrix.
Located in the coastal region of Xiangshan, Ningbo, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established in 1988, tracing its roots to the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over three decades of expansion, we have evolved from a specialized academic workshop into a massive national high-tech manufacturing center.
Our core product line includes copper filter driers, check valves, air conditioning valves, industrial condensers, and customized copper/brass connections. Our "Lingshan" brand filter driers have earned a strong reputation across domestic and global HVAC-R supply chains. We operate a highly modern production campus certified to ISO9001:2015, IATF 16949, RoHS, and UL standards.
Founded as the Xiangshan Refrigeration Accessories Factory, cooperating directly with academic engineering groups at Zhejiang University.
Constructed our first primary manufacturing facility, increasing output for high-purity copper components and household filter driers.
Implemented a state-of-the-art MES (Manufacturing Execution System) workshop management framework to monitor and track tolerances down to the micron level.
Officially established Ningbo Taojun Refrigeration Equipment Co., Ltd. as our primary brand name, launching domestic and international sales channels.
Certified as a National High-Tech Enterprise. Partnered with major global brands including Midea, Gree, Haier, Whirlpool, and Electrolux.
Our filter driers are designed to absorb moisture and acid, and to filter out impurities. Normally installed as a component and replaced as a repair part for both domestic and commercial refrigerators, freezers, and AC units.
We utilize high-deoxidized copper pipe (C12200), ensuring excellent rust resistance, thermal conductivity, and pressure performance. This grade of copper resists internal scale formation and withstands high system pressures.
Loaded with high-efficiency 3A desiccant beads, the matrix features a pore sizing of 3 Angstroms. This configuration absorbs water molecules (kinetic diameter ~2.65Å) while excluding larger refrigerant molecules, ensuring adsorption capacity (≥20%) without chemical interference.
All end caps and joints undergo precise automated argon arc welding. This process produces high-strength, leak-free joints without creating internal carbon deposits, helping prevent capillary tube blockage.
| Product Specification Model | Casing Outer Diameter (mm) | Molecular Sieve Capacity (g) | Inlet/Outlet Inner Diameter (mm) | Max Operating Pressure (PSI) | Target Application Scope |
|---|---|---|---|---|---|
| TJ-CFD-010 | 16.0 - 19.0 | 10g | 2.0 / 6.0 (Customizable) | 450 PSI | Domestic Refrigerators & Freezers |
| TJ-CFD-015 | 19.0 - 24.0 | 15g | 2.5 / 6.35 | 450 PSI | Double Door Chillers & Beverage Coolers |
| TJ-CFD-025 | 24.0 - 30.0 | 25g - 30g | 3.1 / 8.0 | 500 PSI | Commercial Ice Makers & Auto AC Systems |
| TJ-CFD-050 | 32.0 - 45.0 | 50g | 6.35 / 9.52 | 550 PSI | Light Commercial Heat Pumps & Dryers |
To maintain consistent quality, we utilize German-imported manufacturing equipment. This technology allows us to maintain tight tolerances and ensure clean, residue-free internal surfaces on all processed tubing.
Our raw material supply chain includes premium Japanese ITO films and liquid crystal spacers, European-formulated bonding adhesives, and durable protective coatings designed to withstand temperatures from -35°C to 75°C. This combination of materials and manufacturing processes ensures stable performance in varied field environments.
Detailed Finished Product Validation Testing:
A global brand is sustained by its corporate culture. At Ningbo Taojun, our core values of Honesty, Innovation, Responsibility, and Cooperation guide our daily operations.
We focus on honest customer communication, realistic lead times, and open material certification. This transparency forms the foundation of our long-term customer partnerships.
Our R&D team continuously refines production designs and develops products matching the requirements of low-GWP refrigerant systems.
We maintain structured record-keeping to trace raw material batches through all processing steps, helping guarantee consistent quality in every shipment.
We work closely with customers to design custom-sized copper dryer fittings, integrating with their internal engineering requirements.
Our filter driers and HVAC accessories are designed for use across domestic, commercial, and industrial platforms.
We are a certified ISO 9001 manufacturer of precision refrigeration components, demonstrating our commitment to quality across our operations.
These credentials can be verified via China's official CNCA portal (www.cnca.gov.cn), illustrating our compliance with international manufacturing standards.
Taojun
