Engineered to prevent refrigerant leakage and withstand heavy freeze-thaw cycles. Direct from certified precision manufacturing facilities.
Norway is a global leader in decarbonized heating, boasting one of the highest heat pump densities per capita in the world. As the country aggressively moves towards 100% renewable thermal systems, the demand for highly reliable outdoor components—especially split service valves and refrigeration accessories—has skyrocketed.
Operating in typical Scandinavian winter conditions ranging from -15°C to -30°C demands exceptional material durability. Standard brass fittings are susceptible to thermal contraction stress and micro-fissuring. To address this, specialized dezincification-resistant (DZR) brass alloys and high-purity C12200 copper piping are required. Standard A/C split valves must deliver zero-leakage reliability under high pressures (especially for environment-friendly refrigerants like R32 and R290 Propane) over decades of continuous operation.
During active defrost cycles, outdoor units experience thermal shock, shifting from sub-zero temperatures to high heat within minutes. This puts extreme pressure on the valve stem seals and copper-to-brass joints. Only valves manufactured with rigorous molecular-level testing can ensure system integrity.
Explore high-purity copper elbows, industrial drying filters, and brass adapters designed for optimal fluid dynamics and zero pressure drop.
Combining academic research from Zhejiang University with advanced automated production lines for unparalleled precision and economy.
Ningbo Taojun Refrigeration Equipment Co., Ltd. was established in 1988, emerging from the Xiangshan Refrigeration Accessories Factory of Zhejiang University. Our R&D center is staffed by highly qualified engineers collaborating directly with top-tier scientific institutions to implement cutting-edge metallurgy and fluid simulation.
Every split service valve undergoes rigorous automated leak detection. We apply a 24-hour pressure test followed by high-vacuum helium mass spectrometer detection to ensure a leak rate of less than 1x10^-7 mbar·l/s. This is crucial for systems deployed in ecologically sensitive Nordic environments.
Operating with advanced German-imported CNC machining centers and forging systems managed by MES, we minimize material waste and labor costs. This allows us to supply global markets at highly competitive rates without compromising on international standards like ISO9001:2015, RoHS, REACH, and UL.
Get a direct look into our state-of-the-art production lines, automated testing labs, and high-speed CNC forging systems in Zhejiang, China.
From deep fjords to coastal commercial projects, Taojun HVAC accessories deliver stable operation across diverse conditions.
Widely used across Oslo and Bergen, residential heating relies on outdoor units connected via copper piping. Our copper split valves provide robust service isolation points, allowing safe installation and easy maintenance without refrigerant discharge.
Norway's aquaculture and fishing vessels demand corrosion-resistant refrigeration components. Taojun's high-purity brass parts feature heavy-duty surface treatment to resist salt spray erosion and galvanic corrosion in marine environments.
Integrating large multi-split VRF systems for commercial buildings in Trondheim requires durable distribution lines. Our customized high-purity U-bend copper accessories and high-pressure contactors ensure seamless long-term operation.
Founded in 1988 as the Xiangshan Refrigeration Accessories Factory of Zhejiang University, our growth is powered by science and quality. For 38 years, we have designed and supplied refrigeration filter driers, check valves, service valves, condensers, and brass accessories.
As a recognized national high-tech enterprise, we work with global names including Midea, Gree, Haier, Whirlpool, and Electrolux. Our "Lingshan" filter and "Taojun" valves have become synonyms for durability, backed by ISO9001:2015, EU RoHS, and US UL certifications.
We stand by certified excellence in refrigeration component design and manufacturing. Our registration (GB/T19001-2016/ISO9001:2015, Registration No.: 41325Q00065R0S) guarantees complete design validation and systematic control over production lines.
Main ISO Certification Document
Detailed Scope of Verification
Our commitment to tech innovation includes heavy investments in physical infrastructure, ensuring our raw materials and end products meet strict performance metrics.
Clean-room environments containing automated forging and thread rolling units imported from Germany. This ensures dimensional tolerances within ±0.02mm.
Our product lines integrate real-time optical CCD sensors to verify alignment, O-ring seal positioning, and structural integrity at each processing step.
High & low temperature chambers test finished valves between -35°C and 75°C for 500 hours, ensuring no degradation of rubber seals or brass stress cracking.
Get professional answers from our engineering division on technical specifications, pressure limits, and compliance for the Nordic market.
A: We use high-grade HPb59-1 brass and optional CW617N/DZR (Dezincification Resistant) brass alloys. These materials feature high copper content and controlled zinc levels, preventing low-temperature embrittlement and copper-zinc separation under thermal cycling in Scandinavian conditions.
A: Our standard L-bend split service valves are designed and tested for working pressures up to 4.5 MPa (45 Bar), making them fully compatible with high-pressure refrigerants like R410A and R32. Custom versions for CO2 (R744) subcritical applications can be engineered upon request.
A: We implement a double O-ring stem seal design using high-performance synthetic rubber (Neoprene/HNBR) rated for low temperatures. Furthermore, 100% of our split valves undergo helium mass spectrometer leak detection down to 1x10^-7 mbar·l/s before packaging.
A: Yes, all components manufactured by Ningbo Taojun conform with RoHS (Restriction of Hazardous Substances) and REACH directives. Our packaging is 100% recyclable, aligning with Norway's circular economy goals.
A: For standard sizes, our MOQ starts at 500 units. For customized OEM/ODM specifications, lead times range between 15 to 30 days. We offer sea freight through Ningbo Port and express air freight for urgent project schedules.
Complete your supply chain with our range of heavy-duty tapes, safety valves, brazing rods, and auxiliary electrical components.
Taojun
