Direct supply from China's leading ISO-certified manufacturing facility, optimized for global HVAC/R distribution channels.
In modern industrial and commercial heating, ventilation, air conditioning, and refrigeration (HVAC/R) systems, the dryer filter (filter drier) is the first line of defense against internal system degradation. A high-efficiency liquid line or suction line filter drier removes moisture, organic acids, hydrofluoric acids, and solid physical impurities that otherwise compromise the life of reciprocating, scroll, or rotary compressors.
As the global market transitions rapidly toward environmentally sustainable refrigerants like R32, R290 (propane), and carbon dioxide (R744), the requirements for system cleanliness have grown exponentially. Unlike older CFC and HCFC-based networks, newer synthetic HFC/HFO blends and natural hydrocarbon refrigerants exhibit high hygroscopicity. When moisture interacts with POE (polyolester) or PVE (polyvinyl ether) synthetic oils, it undergoes a hydrolysis reaction that forms reactive acids. These acids attack compressor winding insulation, causing electrical motor burnout, copper plating on valve plates, and severe wear on internal bearings. Therefore, specifying high-performance filter driers with 100% 3A molecular sieve cores is a non-negotiable requirement for system designers.
Located in the scenic coastal city of Xiangshan, Ningbo, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established in 1988, tracing its roots to the esteemed Xiangshan Refrigeration Accessories Factory of Zhejiang University. Over 30 years of relentless engineering evolution has positioned us as a premier national high-tech enterprise (certified in 2021) combining state-of-the-art research, advanced thermodynamic design, high-volume production lines, and comprehensive OEM/ODM services.
Our core product line focuses on the critical circulation pathways of refrigeration systems: filter driers, check valves, air conditioning valves, wire-on-tube condensers, copper and brass fittings, and high-performance refrigerant line assemblies. Our proprietary "Lingshan" filter brand has earned wide recognition across domestic commercial markets, representing elite performance, robust system protection, and longevity.
"In 2012, our brand expanded globally, establishing deep partnerships with top tier appliance giants, including Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. Our reach spans markets across Europe, the Americas, Southeast Asia, the Middle East, and Africa."
Providing specialized refrigeration components engineered for extreme environments and high operating pressures.
TAOJUN copper 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 air conditioners.
Formed using premium C12200 high-purity copper piping. Extremely rust-resistant, boasting excellent thermal conductivity and structural integrity to withstand high operating pressures in systems using R410A or R32.
Utilizes a highly efficient 3A molecular sieve (water absorption efficiency ≥20%) combined with an optional activated carbon layer to target soluble waxes, oil breakdown products, and physical particulates down to 20 microns.
Manufactured using automated, high-precision argon arc welding and robotic induction brazing to ensure absolute seal integrity. Every unit undergoes rigorous helium mass spectrometer leak detection testing.
A look at our state-of-the-art facilities, USTC research collaboration, and rigorous quality standards.
Our core production tools, automatic drawing, and multi-station copper forming machinery are imported from Germany to guarantee structural consistency and dimension tolerances within ±0.02mm.
Our engineering design center employs 15 dedicated research engineers, including PhDs and engineering professors from the University of Science and Technology of China (USTC), keeping us at the forefront of thermodynamic innovation.
We supply customized copper dryer filter configurations, custom shell diameters, capillary connector dimensions, and internal desiccant weights (ranging from 5g to 100g) tailored to client specifications.
We source raw materials globally: Japanese optical-grade separator components, high-density German filter felts, and European heat-resistant bonding agents designed to withstand temperatures of 80°C to 90°C without degassing.
Every product batch is subjected to a 500-hour environmental test (-35°C to 75°C), rapid thermal shock test (10°C to 90°C), and damp heat stress validation to ensure no physical degradation or chemical breakdown occurs inside the circuit.
Our operation is certified to ISO9001:2015, IATF 16949 automotive standards, European Union RoHS directive, and United States UL safety certification, securing easy custom clearance and global compliance.
The manufacturing ecosystem of Ningbo, China offers unprecedented speed and cost-efficiencies for the HVAC/R industry. By integrating raw copper smelting, high-precision capillary drawing, chemical desiccant processing, and assembly logistics within a 50-mile radius, Ningbo Taojun delivers rapid turnarounds without compromising on QA. Our manufacturing facility uses the MES (Manufacturing Execution System) to log every raw material batch and process parameter, ensuring end-to-end traceablity from copper rod to the finished system assembly.
| Parameters | Standard Specifications | Test Conditions & Methods |
|---|---|---|
| Shell Material | High Purity C12200 Copper (Cu ≥ 99.9%) | Metallurgical Analysis |
| Desiccant Type | 3A Molecular Sieve Zeolite Core | X-ray Diffraction (XRD) |
| Water Absorption Capacity | ≥ 20% by weight | Tested at 25°C, RH 60% |
| Maximum Operating Pressure | Up to 4.5 MPa / 45 Bar (R32 / R410A compatible) | Hydrostatic Burst Test |
| Hermetic Seal Leak Rate | < 1 x 10⁻⁷ mbar·l/s | Helium Mass Spectrometer Leak Test |
| Internal Particulate Filtration | Down to 20 Microns | High-density woven copper mesh filter |
| Thermal Shock Tolerance | -35°C to 75°C cycles (500 Hours) | Chamber Cycle Simulation |
Direct access to our most popular high-performance copper filters and specialized HVAC connectors.
For B2B procurement managers and system engineering leads, partnering with a certified manufacturer is crucial. Juntao Refrigeration (registered as Ningbo Taojun Refrigeration Equipment Co., Ltd.) maintains strict quality compliance verified under registration number GB/T19001-2016 / ISO9001:2015 (Reg No: 41325Q00065R0S).
This certification is fully auditable through the National Certification and Accreditation Administration of China (CNCA) portal (www.cnca.gov.cn) and our auditing body, Zhongci International (www.zcgirz.com). It validates our capability to handle advanced manufacturing runs, maintain tight tolerances, and verify material tracing for every production run.
ISO9001 Certification
Detailed Quality Scope
Gain direct support from sales engineers with 15+ years of pump and compressor systems engineering experience. We provide 24-hour rapid response times and resolve engineering queries within 8 hours.
From custom drawing designs to specialized high-pressure performance testing, we match client dimensional tolerances and material configurations for specialized product requirements.
We back our assemblies with a 1-year product replacement warranty, lifetime technical assistance, and continuous communication to integrate customer feedback into our production methodologies.
Tracking our evolution since 1988 and the foundational values driving our future growth.
1998
Our Factory Building
2008
MES Workshop Launch
2024
Smart Automation Era
People-oriented and quality-driven, honesty forms the bedrock of our global competitive edge, maintaining transparent B2B communications across borders.
From conceptual structures to mechanical optimizations, we keep our operations adaptable to industry environmental changes and regulatory standards.
We hold ourselves accountable to our clients and society, prioritizing the manufacture of robust products that support the environment through zero-leakage pathways.
By integrating technical resources and specialized staff, we coordinate closely with clients to build strong, long-term industry supply chains.
Providing custom sealing, filtration, and flow control designs engineered to meet diverse operating requirements.
Specifically tuned filter driers featuring high moisture absorption cores, critical for ice makers, walk-in coolers, and freezing units prone to heavy thermal variations.
Lightweight copper assemblies built to withstand continuous vibration and rapid pressure fluctuations, ensuring high-strength connection points.
Heavy-duty, high-capacity filter cartridges configured for continuous operation, keeping oil oxidation products low to protect expensive scroll compressors.
Optimized capillary configurations and cost-efficient copper filter units built for seamless assembly line integration for appliance manufacturers.
Expert answers addressing the design, selection, and maintenance of copper filter driers in refrigeration systems.
Complete your HVAC installations with our certified outdoor brackets, condensers, and service tools.
Taojun