Explore our core high-durability system accessories designed to optimize thermal efficiency and maximize compressor lifespan.
In modern multi-split VRF (Variable Refrigerant Flow) and commercial refrigeration systems, the refrigeration tee (or copper branch joint) is not simply a pipe fitting; it is a critical dynamic component. As systems shift to high-pressure eco-friendly refrigerants like R410A, R32, and R744 (CO₂), the mechanical demands on tee connections have increased exponentially. Structural integrity, internal surface smoothness, and precise bifurcation geometry are paramount to prevent turbulence, pressure drops, and compressor oil-return issues.
Our refrigeration tees are manufactured exclusively from C12200 Deoxidized High Phosphorus (DHP) copper, conforming to global ASTM B280 and EN 12735-1 standards. This grade features a minimum copper content of 99.9% and phosphorus limits between 0.015% and 0.040%. Deoxidization prevents hydrogen embrittlement during brazing, ensuring joint integrity at operating pressures exceeding 4.15 MPa. Under extreme temperature cycling (from -40°C to +120°C), C12200 maintains excellent tensile strength and ductility, preventing fatigue cracks at critical bend points.
Unequal branch division in refrigeration tees creates unequal vapor-liquid flow distribution. When liquid refrigerant hits a poorly designed tee, the phase separation ratio changes, causing dry-out or liquid slugging in downstream evaporators. By optimizing the branching radius ($R \ge 1.5d$) and utilizing advanced internal sizing mandates, Taojun's tees maintain laminar flow profiles. This reduces pressure drops by up to 15% compared to standard generic copper fittings, saving considerable energy and optimizing the overall system's Seasonal Energy Efficiency Ratio (SEER).
From residential smart homes to heavy industrial cold chains, our components deliver absolute reliability.
Perfect split distribution is required to balance liquid and gas phases to different indoor units. Our branch tees offer precise dimensional tolerance (±0.02mm) ensuring even heat exchange across multiple building zones.
Under ultra-low temperature requirements (down to -80°C), thermal shock can compromise standard joint interfaces. Our argon-arc welded, high-purity copper joints eliminate brazing micro-cracks and prevent refrigeration leaks.
For systems handling hot gas defrosting cycles and severe vibration, our heavy-gauge copper tees absorb mechanical stress and dynamic pulsation without deformation or structural breakdown over decades of operation.
Ningbo Taojun Refrigeration Equipment Co., Ltd. is located in Xiangshan, Ningbo, a beautiful tourist city. Founded in 1988, its predecessor was Xiangshan Refrigeration Accessories Factory of Zhejiang University. The company's leading products include: filter driers, check valves, air conditioning valves, condensers, brass and copper accessories, air conditioning cable ties, and other refrigeration accessories series products.
After 30 years of hard work and rapid development, it has now become a comprehensive enterprise integrating the design and development, production and sales, and after-sales service of refrigeration accessories. In 2021, it became a national high-tech enterprise. Our company is committed to technological and process innovation, equipment improvement, and the introduction of advanced management concepts to produce first-class products.
Customer satisfaction is our unwavering pursuit. With reasonable design, reliable quality, and perfect after-sales service, the "Lingshan" filter has become a well-known brand in the domestic refrigeration industry. The company has successively passed ISO9001:2008 quality management system certification, EU ROHS environmental protection directive certification, and US UL certification. The company always takes customer needs as the basis and continuously innovates management concepts to ensure efficient and stable development.
In 2012, Ningbo Taojun Refrigeration Equipment Co., Ltd. was established, creating the brand "Taojun" condensers, "Taojun" stop valves and other series of products. Over the years, it has established partnerships with well-known domestic and foreign home appliance enterprises such as Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui. The product sales network covers major and medium-sized cities in China and is exported to Europe, America, South America, Southeast Asia, the Middle East, Africa and other overseas markets.
Over 38 Years of Continuous Innovation in Copper and Brass Refrigeration Components
Taojun specializes in refrigeration parts for 38 years. Our catalog includes high-efficiency filter driers, access valves, condensers, and premium brass/copper fittings. Feature: 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.
Why do leading appliance giants like Haier, Midea, Whirlpool, and Electrolux trust Ningbo Taojun for their critical component supply? It comes down to our localization in Ningbo's world-class industrial cluster, raw material hedging strategies, and vertically integrated manufacturing lines.
Our factory utilizes direct sourcing networks from local smelters. By reducing the logistical latency between copper extrusion, precision bending, and branch tee forming, we minimize oxide layer formations on raw metal. This ensures clean brazing surfaces right off the line. Coupled with automated manufacturing machinery imported directly from Germany, we control the geometry tolerance down to ±0.02mm, ensuring zero-gap fits for high-vibration systems.
As the global HVAC industry adopts green refrigerants, traditional connection components must change. Standard copper connections are prone to failure under the high pressures of CO₂ trans-critical cycles. Ningbo Taojun's R&D department is leading this evolution by engineering reinforced dual-layer copper-iron alloys (CuFe2P) and brazing rods containing specialized flux alloys. These innovations allow our fittings to withstand pressures up to 120 bar, making them future-proof for next-generation commercial refrigeration systems.
Commitment to Scientific Innovation and Uncompromised Quality Standards
Our core manufacturing equipment is imported directly from Germany, guaranteeing sub-micron accuracy and highly consistent wall thicknesses for all refrigeration tees and copper pipes.
We have 15 engineers in our R&D center, all of whom are doctors or professors from the University of Science and Technology of China, specializing in metallurgical science and thermal dynamics.
Customized sizes, multi-port branch tee structures, and complex refrigeration manifold designs are available. Welcome to share your project dimensions to co-engineer specialized thermal paths.
Our liquid crystal spacers and ITO films are sourced from high-grade Japanese suppliers; high-stability glues are imported from European manufacturers, boasting thermal resistance ranges between 70°C and 90°C.
High & low temperature tests at 75°C and -35°C for 500 hours; thermal shock tests (10°C to 90°C) for 30 minutes; damp heat testing for 500 hours. Active smart film products undergo a continuous 24-hour high-voltage aging test.
Inside our ISO-Certified Production Facilities in Zhejiang, China
Our original factory building in Xiangshan. Serving as a crucial supplier of OEM refrigeration accessories and starting our long-term collaboration with Zhejiang University engineers.
Implementation of the MES intelligent workshop management system, tracking raw copper inputs to final packaging. Improving manufacturing transparency and defect isolation.
Launch of fully automated production lines for complex branch joints, multi-split refrigeration tees, and smart leak detection modules, reducing lead time by 30%.
"A world brand is supported by a corporate culture. We fully understand that our culture forms through Impact, Infiltration, and Integration. Honesty, Innovation, Responsibility, and Cooperation guide our operations."
Adhering to people-oriented, integrity-focused management with quality at the center of our reputation. Honesty is the true source of our competitive edge.
We innovate across concept, mechanism, technology, and management, maintaining an active corporate structure to meet environmental changes.
A strong sense of mission for our clients and society. This invisible yet powerful drive fuels the development of the Taojun group.
Working together to create win-win situations. Integrating resources to complement strengths and allow professional team members to excel.
Trusted globally for system integrity under high thermal loads
Verified Quality Systems and Traceable Raw Material Pipelines
Main Certification Document
Detailed Scope of Certification
Juntao Refrigeration (NINGBO TAOJUN REFRIGERATION EQUIPMENT CO., LTD.) stands as a globally recognized leader in the design and production of critical refrigeration components. With our official GB/T19001-2016 / ISO9001:2015 certification (Registration No.: 41325Q00065R0S), we demonstrate uncompromising commitment to quality in manufacturing filter driers, condensers, and access valves.
This certification, verifiable via China's CNCA (www.cnca.gov.cn) and our partner Zhongci International (www.zcgirz.com), validates our advanced OEM and ODM capabilities for clients worldwide. For partners seeking reliable refrigeration component solutions, Juntao delivers innovation, precision, and supply chain security from our ISO-certified facility in Zhejiang, China.
Complete Lifecycle Customer Service for Global Distributors & OEMs
Inquiry and consulting support backed by 15 years of pump and refrigeration technical experience. One-to-one sales engineers provide immediate technical evaluations. Hotline services are available 24/7, with guaranteed responses within 8 hours.
Technical training and equipment evaluation, installation and debugging troubleshooting, and proactive maintenance updates. Every component comes with a one-year warranty, alongside free lifetime technical support.
We maintain continuous, lifetime contact with our partners to gather system feedback. This allows our metallurgical engineers to constantly refine product designs, ensuring our refrigeration tees operate flawlessly over years of use.
How we guarantee consistent quality and optimized fluid performance
35+ years of R&D expertise supported by our historical partnership with Zhejiang University metallurgical labs.
ISO 9001 and IATF 16949 certified manufacturing pipelines utilizing our proprietary 5D quality control system to achieve a 0.05% defect rate.
Serving a network of 50+ countries with long-term supply partnerships for Haier, Midea, Whirlpool, and Electrolux.
OEM/ODM support for custom split tee diameters, small runs (500-unit MOQ), and 72-hour global dispatch capacities.
RoHS, REACH, and WEEE certified manufacturing processes utilizing 100% recyclable shipping packaging.
Real-time MES systems, CCD visual inspection cameras, and high-vacuum helium leak testing for every component.
±0.02mm raw foil tolerance and specialized pressure testing designed for a 10-year service life.
Continuous product innovation focused on high-efficiency green cooling cycles to minimize carbon footprints.
Expert insights on metallurgy, flow characteristics, and installation requirements
High-durability hoses, valves, and filter dryers engineered to withstand harsh operating conditions.
Taojun