Heavy-duty refrigeration split valves and copper line components engineered for peak performance in extreme ambient environments.
Uzbekistan is experiencing an unprecedented industrial and urban transformation. With major infrastructural upgrades spanning Tashkent City, Samarkand, Bukhara, and the Fergana Valley, the demand for highly reliable Heating, Ventilation, and Air Conditioning (HVAC) systems has surged exponentially. The country’s continental climate presents extreme thermal contrasts: blistering summer temperatures exceeding 45°C and freezing winters dipping below -15°C.
For engineering consultants and HVAC manufacturers serving Central Asia, standard split service valves often fail under these extreme conditions. Thermal expansion, high moisture levels during seasonal transitions, and fine desert dust require split service valves forged from top-tier brass alloys (such as HPb59-1) and high-purity copper pipelines. Standard components degrade rapidly, causing critical refrigerant leaks that ruin compressors and elevate lifecycle maintenance costs.
Our specialized China-based factory addresses these exact regional vulnerabilities. By utilizing German-imported machining centers and advanced leak detection systems, we supply A/C split valves, copper filter driers, and line connectors engineered to handle R410A, R32, and R290 high-pressure refrigerants up to 4.2 MPa, ensuring uninterrupted operation for Uzbekistan’s massive residential complexes and industrial cold storage chains.
Over three decades of engineered precision, university collaborations, and high-tech manufacturing.
Our core production lines utilize precision machinery directly imported from Germany, ensuring sub-micron manufacturing tolerances (+/-0.02mm) for all valve stems, internal seats, and threaded connections.
Backed by our predecessor—the Xiangshan Refrigeration Accessories Factory of Zhejiang University established in 1988—our R&D center is directed by doctors and engineering specialists from top institutions like the University of Science and Technology of China.
We custom design, tool, and manufacture specialized split valves, copper manifolds, and drying filters tailored to your custom specifications. OEM/ODM services are backed by a flexible MOQ threshold and rapid tooling protocols.
We utilize C12200 phosphorus-deoxidized copper tubing and premium brass. Our internal components (including Japanese-imported liquid crystal spacers and high-grade seals) withstand constant exposures between -35°C and 75°C.
Finished goods undergo thermal shock tests (10°C to 90°C), damp heat tests for 500 hours, and smart visual inspections. Split valves are tested using high-sensitivity helium mass spectrometers to guarantee zero-leak rates.
Ningbo Taojun holds official ISO 9001:2015, IATF 16949, CE, EU RoHS, REACH, and US UL safety certifications, making us a fully authorized Tier-1 vendor for brands like Gree, Haier, Midea, Whirlpool, and Electrolux.
Our manufacturing philosophy focuses on eliminating systemic HVAC failures. Water moisture and acidic residues within a closed refrigerant loop are the primary drivers of compressor breakdown. To counter this, Ningbo Taojun's copper filter driers feature custom-formulated interior cores combining 3A Molecular Sieve (with water absorption capacity ≥20%) and activated carbon layers.
Extruded from high-purity C12200 copper piping to guarantee a burst pressure resistance threshold of over 12 MPa, satisfying global industrial cooling demands.
All connections are bonded utilizing 5%, 10%, or 15% silver brazing alloy with automated argon gas protection, ensuring leak-free performance and structural integrity under constant thermal cycling.
Our custom interior core design minimizes pressure drops across the valve or filter, enhancing energy efficiency and reducing current draw in modern inverter AC systems.
From our humble beginnings in 1988 as the Xiangshan Refrigeration Accessories Factory, our growth has been driven by a commitment to technological innovation and strategic expansion. By 2012, Ningbo Taojun formally unified its manufacturing operations, launching the "Taojun" premium stop valve, service valve, and condenser series. Today, our products are shipped to over 50 countries, serving major commercial hubs in the Middle East, Southeast Asia, South America, and Central Asia.
We believe that high-performing hardware must be backed by a strong corporate culture. We focus on four key values: Honesty in client negotiations, continuous Innovation in brass forging, complete Responsibility for quality control, and close Cooperation with overseas procurement directors. This philosophy ensures we build lasting partnerships, not just transactional sales.
Verifiable quality control frameworks to guarantee international safety and performance standards.
Registration No: 41325Q00065R0S
Design & Manufacturing of Filter Driers, Condensers, and Split Service Valves
Equipped with high-performance test systems for precise material analysis
Our ISO 9001 certificate is fully verifiable via the Certification and Accreditation Administration of the People's Republic of China (CNCA) portal at www.cnca.gov.cn. This validation underscores our commitment to providing reliable refrigeration components for global HVAC projects.
How our engineered refrigeration components fit key regional infrastructure demands.
High-durability brass L-bend stop valves built for multi-split compressor setups, preventing gas leakage during high-temperature summers.
Large-capacity filter driers and heavy-duty contactors designed to handle high daily cooling demands and frequent startup cycles.
Specially constructed copper accumulators and liquid receivers that optimize compressor safety in massive food processing facilities.
Vibration-resistant copper fittings and flexible service ports designed to withstand heavy transit shock on regional overland routes.
Examine our diverse selection of filters, condensers, contactors, and tooling options designed for global HVAC systems.
Exporting HVAC and refrigeration components to landlocked Uzbekistan requires reliable logistics management. Ningbo Taojun's dedicated global trade team offers optimized transport solutions to Central Asian markets, reducing transit delays and securing competitive freight costs.
Our standard freight routing options include:
Our technical support teams are available online 24/7 to answer engineering and logistics questions, responding within 8 hours. We offer a one-year warranty on all products and continuous lifetime technical support.
Find answers to common engineering, procurement, and shipping questions regarding our refrigeration valves.
We use premium brass alloys (specifically HPb59-1 grade) for the main valve body forging and high-purity C12200 phosphorus-deoxidized copper for the tubing segments. This combination prevents oxidation, maintains structural strength under high pressure, and supports reliable field brazing.
Yes, all our split service valves and copper accessories are pressure-rated and tested for compatibility with eco-friendly, high-pressure refrigerants like R410A and R32. They are rated for working pressures up to 4.2 MPa (42 bar) with a burst safety threshold exceeding 12 MPa.
Yes, we have 15 engineers in our R&D center who specialize in custom designs. We can adjust port sizes, thread designs, mounting angles, and copper tube thicknesses based on your specific requirements. We accept custom sizes and shapes with low MOQ requirements.
Every product batch is subjected to high and low-temperature thermal cycling tests (-35°C to 75°C for 500 hours), thermal shock trials, and 100V electrical load testing for contactors. Additionally, all split valves undergo high-sensitivity helium mass spectrometer testing to ensure a zero-leak seal.
We coordinate direct overland container shipping via the China-Central Asia railway network or intermodal road transit. We handle the export clearance documents from China and provide certified certificates of origin to simplify customs processing in Tashkent and other local hubs.
Our manufacturing facility and products are fully certified under GB/T19001-2016/ISO9001:2015 quality management systems, IATF 16949 automotive standards, European Union RoHS environmental directives, and Underwriters Laboratories (UL) safety listings for North America.
Standard product configurations are typically manufactured, inspected, and packaged for dispatch within 20 to 30 days. Custom OEM/ODM designs requiring new tooling may require an additional 15 days for sample approval prior to bulk production runs.
Taojun
