Explore our industrial-grade refrigeration components engineered for maximum thermodynamic efficiency and leak-proof longevity.
In modern cooling infrastructures, the critical role played by the AC Split Service Valve (commonly searched in supply chains as the Ac Splte Valve) cannot be overstated. These components act as the gatekeepers of refrigerant integrity, providing isolation during charge, installation, and preventative maintenance cycles.
As a global leader in HVACR components, Ningbo Taojun Refrigeration Equipment Co., Ltd. addresses the evolving challenges of high-pressure refrigerant containment (such as with R32, R410A, and next-generation low-GWP hydrofluoroolefins). Mechanical fatigue, micro-leakage, and galvanic corrosion are key issues faced by engineers. By selecting deoxidized phosphorus copper (C12200) and combining it with precision machining and automated assembly, Taojun sets a high benchmark for split valve stability.
This technical document explores the critical performance indicators, manufacturing advancements, quality frameworks, and procurement dynamics that define first-rate refrigeration parts in today's highly demanding global market.
Founded in 1988, the predecessor of Ningbo Taojun Refrigeration Equipment Co., Ltd. was the renowned Xiangshan Refrigeration Accessories Factory of Zhejiang University. Strategically located in the coastal city of Xiangshan, Ningbo, our enterprise is built on three decades of engineering innovation, transitioning into a national high-tech enterprise in 2021.
Under the guidance of our domestic refrigeration brand "Lingshan" and our global brand "Taojun", we design, manufacture, and distribute critical components, including:
Today, our products support major appliance brands worldwide, including Haier, Xinfei, Midea, Gree, Whirlpool, Electrolux, and Huarui.
Comprehensive design, material control, and testing routines behind our world-class component solutions.
Engineered to absorb moisture and acids while filtering particulate matter. Constructed from high-purity copper shells, utilizing 3A molecular sieves (water absorption capacity ≥20%) coupled with active carbon cores. Sealed via automated argon arc welding.
Our core product range features split valve designs that sustain high system pressures (up to 4.3 MPa for R410A/R32 networks). Precision-honed brass stems minimize torque and eliminate micro-fissure leakage.
Providing deoxidized copper fittings (U-Bends, Equal Tees) and aluminum receiver tanks. Each fitting undergoes continuous ultrasonic cleaning to remove grease, oxide residue, and particulate matter before shipment.
*All copper and brass parts are fully compatible with domestic and commercial refrigerators, freezers, and variable refrigerant flow (VRF) systems.
Deep-dive into our imported machinery, scientific engineering pool, and test profiles that guarantee a 98.6% client satisfaction rate.
Our main automated extrusion, machining, and assembly equipment is imported directly from Germany, assuring ±0.02mm dimensional tolerances for all aluminum and copper flow control elements.
Our state-level engineering center retains 15 full-time research professionals, including doctors and consulting professors from the University of Science and Technology of China (USTC).
Our liquid crystal spacer (offering excellent uniformity) and low-shrinkage ITO films are imported from Japan. Our engineering adhesives originate from Europe, ensuring thermal stability up to 80-90°C.
We subject finished components to hot/cold temp cycling (75°C to -35°C for 500 hours), thermal shock trials (10°C to 90°C for 30 minutes), and 100V high-voltage breakdowns to ensure insulation and weld stability.
Our factories operate under a centralized MES (Manufacturing Execution System) and utilize CCD visual inspection alongside automated helium leak detection to screen out surface defects and seal micro-fissures.
Argon arc welding processes and specialized low-temperature brazing rods are deployed across all joint assemblies, preventing refrigerant escapes and safeguarding compressor longevity.
For over three decades, Taojun has steadily expanded its technology stack and manufacturing capabilities.
1988
Established as Xiangshan Refrigeration Accessories Factory of Zhejiang University, blending academic research with industrial manufacturing.
1998
Constructed our primary factory building in Xiangshan, Ningbo, expanding the manufacturing footprint to support domestic HVAC enterprises.
2008
Implemented the MES intelligent workshop management system, transitioning quality control from periodic sampling to real-time process monitoring.
2012
Ningbo Taojun Refrigeration Equipment Co., Ltd. was established to focus on global markets, launching the "Taojun" brand condenser and stop valve lines.
2021 - 2024
Designated a national high-tech enterprise. Upgraded manufacturing lines with helium leak detectors and automated high-pressure testing bays.
How Taojun aligns with transition trends in refrigerant technologies and modern green building codes.
The global HVACR sector is rapidly transitioning away from high-GWP (Global Warming Potential) HFCs like R410A toward eco-friendly alternatives such as R32, R290 (propane), and R744 (carbon dioxide). These alternatives operate at higher pressures and require components that can withstand severe thermal expansion cycles.
Our split valves and filter driers are designed with high-density molecular sieves and reinforced brass forgings. This design prevents corrosion and refrigerant leaks, making them compatible with flammability risks associated with A2L and A3 refrigerants.
Refrigeration reliability in commercial settings is essential for keeping food and medical supplies safe. We manufacture custom liquid receivers, filter driers, and service access ports that support stable, continuous operation in supermarket cold storage, industrial ice machines, and refrigerated transport.
Copper U-bends, equal tees, wall brackets, and service valves configured to endure outdoor humidity and vibration.
Aluminum liquid receivers and specialized filter cartridges that keep freezing cycles free from mineral contaminants.
IATF 16949-grade manufacturing setups providing customized block valves and micro-driers for vibration-heavy installations.
At Taojun Refrigeration, quality control is backed by formal, verifiable industry certifications.
Our facility operates under GB/T19001-2016 / ISO9001:2015 certification (Registration No.: 41325Q00065R0S), issued by Zhongci International Certification (ZCGIRZ) and monitored by China's national regulatory body (CNCA). This framework ensures traceabilty for all incoming copper rods, molecular sieve desiccant beads, and finished valves.
We supply testing and regulatory compliance documentation to simplify global distribution:
ISO 9001:2015 Certificate
Detailed Scope Profile
A look at the production floors and research labs that produce our precision HVAC components.
A secure supply chain requires quick technical support and reliable delivery. Taojun supports global procurement teams through structured engineering service workflows:
Our dedicated sales engineers, backed by 15+ years of pump and valve engineering expertise, help specify materials, confirm dimensions, and run compatibility analyses based on the target refrigerants. Our consultation channels respond within 8 hours.
Every Taojun refrigeration component comes with a comprehensive one-year product replacement warranty. We provide lifelong technical support, assist with layout installation, troubleshoot pressure abnormalities, and collect field performance data to refine future production runs.
Our long-term growth is guided by four core values that shape our daily operations:
Expert insights on sizing, material grades, compliance, and supply chain logistics for professional buyers.
We use high-purity C3771 or HPb59-1 forging brass for our AC split valves. This alloy offers excellent machinability and durability, preventing stress corrosion cracking under high-pressure conditions (such as R32 or R410A systems operating at up to 4.3 MPa).
Every filter drier is welded using automated argon arc welding or induction brazing, which provides deep joint penetration. After assembly, the driers undergo a pressurized helium mass spectrometer test to detect and reject any parts with micro-leaks.
Yes, our R&D center provides full OEM and ODM customization. We can adjust diameter sizes, wall thicknesses, and connection types (flare or solder) to meet your system specifications, with a minimum order quantity (MOQ) starting at 500 units.
Yes, all our copper fittings, brass valves, and brazing alloys are certified compliant with RoHS and REACH. We verify lead content and other chemical restrictions to ensure our parts meet EU environmental regulations.
We use 3A molecular sieve desiccant beads, which have a pore opening of 3 Angstroms. This size selectively adsorbs water molecules while excluding refrigerant molecules (such as R134a or R600a), preventing degradation of the refrigerant stream.
For standard components, production lead time is typically 20 to 30 days. For urgent OEM projects, we can fast-track production through our MES-coordinated schedules, allowing us to dispatch orders within 72 hours if inventory is available.
Complete your HVACR builds with our certified installation brackets, brazing materials, and evaporators.
We support global refrigeration projects with custom manufacturing, quick delivery options, and technical documentation. Partner with us to optimize your HVACR supply chain.
Taojun
