High-precision components built to meet global compliance and severe thermodynamic system challenges.
Established in 1988, Ningbo Taojun Refrigeration Equipment Co., Ltd. traces its roots back to the prestigious Xiangshan Refrigeration Accessories Factory of Zhejiang University. Situated in the manufacturing hub of Ningbo, China, the company has evolved over three decades into a leading national high-tech enterprise that designs, manufactures, and supplies critical refrigeration components.
Our specialized portfolio spans copper filter driers, check valves, air conditioning valves, wire-tube condensers, high-precision brass and copper fittings, and refrigeration tubing accessories. Operating under our flagship brand "Lingshan" and "Taojun", we have earned the trust of global appliance giants including Haier, Midea, Gree, Whirlpool, Electrolux, and Xinfei. Our enterprise features certified manufacturing paths via ISO 9001:2015, compliance with the EU RoHS Directive, and safety standards validated by UL.
Observe our automated assembly lines, helium leak detection, and advanced quality verification processes.
In modern HVAC/R systems, the integrity of fluid pathways is paramount. Refrigerant charging accessories—specifically the Can Tap Valve—serve as critical interfaces between high-pressure gas containers and system manifolds. Under the E-E-A-T framework, our engineering team highlights the physical, chemical, and design elements required to prevent micro-leakages, withstand structural stresses, and sustain long operational lifespans under fluctuating pressures.
A high-performance can tap valve requires structural materials capable of resisting stress-corrosion cracking (SCC) while maintaining precise mechanical threads. We utilize premium CW617N and HPb59-1 lead-free brass, coupled with high-purity copper alloys.
Refrigerant charging can introduce trace moisture and atmospheric impurities into the system loop. To counter this, our filter driers utilize a high-capacity 3A molecular sieve matrix combined with an activated alumina/carbon barrier.
This configuration ensures that any moisture, acid, or particulate matter introduced during field servicing is trapped, preventing the formation of hydrofluoric acid that degrades compressor motor windings and clogs critical expansion components.
Global regulatory frameworks, including the Kigali Amendment to the Montreal Protocol, are accelerating the phase-out of high-GWP (Global Warming Potential) refrigerants like R134a and R404A in favor of natural alternatives (R290, R600a) and HFO blends.
This transition imposes severe challenges on sealing components:
Why Tier-1 global appliance manufacturers rely on Taojun Refrigeration components.
Our core production lines feature automated machining tools imported directly from Germany, ensuring absolute repeatability and dimensional accuracy across high-volume production runs.
Supported by 15 advanced engineering researchers and doctors, we maintain a persistent feedback loop with refrigeration technology departments, keeping our products at the frontier of thermodynamics.
Raw materials are thoroughly verified: Japanese-imported ITO films and liquid crystal components undergo rigorous thermal stability checking, and finished products undergo 500-hour environmental chambers.
Our integrated MES workshop management system provides real-time tracking of orders. We offer custom dimensions, branding, and packaging with a low MOQ of 500 units for global distribution.
Establishing stability, technical innovation, and partnerships since 1988.
We believe that integrity management and quality utmost form the source of our enterprise's competitive edge. Every step of our metallurgical and chemical processes is documented and certified.
Our engineers make innovations in concepts, mechanics, and design to accommodate changes in modern eco-friendly refrigerants.
All refrigeration parts adhere strictly to RoHS and REACH environmental regulations. We prioritize lead-free brass formulations and 100% recyclable packaging materials to support green global supply chains.
Where Taojun HVAC/R components are installed globally.
Our Quality Management System is verified through official channels, ensuring global trade standard compliance.
We operate under verified ISO certification (Registration No.: 41325Q00065R0S) issued by Zhongci International Certification (China). This credential certifies our design, manufacture, and distribution processes for refrigeration filter driers, condensers, and access valves. Verify this record directly via the CNCA official validation portal (www.cnca.gov.cn) or our certification partner's web hub (www.zcgirz.com).
This system controls operational variations, ensuring our copper filter driers absorb moisture stably (capacity ≥ 20%), our brass charging valves maintain tight tolerances, and our wire-tube condensers endure continuous service.
ISO9001:2015
QC System
UL Standard Verification
RoHS Certification
Technological Patents
Ensuring micro-level precision and process reliability across all production stages.
Equipped with high-precision machining hubs to shape brass connectors and can tap components under micron tolerances.
Processes raw materials into finished units under MES tracking, preventing contamination by foreign matter.
Houses chambers for high-low temperature cycling (75°C to -35°C), damp heat tests, and helium leak analysis.
Providing global partners with technical support and supply chain responsiveness.
Our design engineers provide expert consultation to align mechanical specifications with regional safety codes.
We back all shipments with proactive quality verification, field diagnostics, and responsive warranties.
Answers from our engineering department regarding specifications, materials, and global trade standards.
Select a product to view technical datasheets, CAD structures, and ordering codes.
Taojun