Recently, South Valve Technology Co., Ltd. launched a new generation of long-neck structured cryogenic ball valves, achieving stable operation in extreme environments as low as -196°C through zero-leakage sealing design and self-relieving cavity technology. These valves are widely applicable for the transportation and control of liquid cryogenic media.
The valve body and bonnet are made of special materials such as cryogenic-resistant stainless steel and cryogenic-resistant cast steel. The elongated bonnet design strictly controls the gap between the valve stem and extended neck, reduces the cold flow up, and prevents the filling icing resulting in the switch torque and valve stem scratching. Its compact structure enhances thermal insulation performance, reducing heat loss. The anti-static design employs a spring mechanism to prevent explosion risks caused by static electricity accumulation. Additionally, the valve's smooth, flat internal channel resists media deposition. With exceptional cryogenic sealing performance and corrosion resistance, the valve ensures operational safety.
According to Tianyancha data, South Valve Technology Co., Ltd., located in Oubei Town, Wenzhou—China’s “Hometown of Pumps and Valves”—is a technology-based SME specializing in R&D, production and sales of valve technologies. Its products serve diverse industries, including power generation, petrochemical, chemical engineering, natural gas, metallurgy, cement, construction and water supply, with core offerings such as high-temperature high-pressure power station valves, extraction check valves, steam trap valves, and block valves. As of April 2025, the company holds 14 trademarks and 33 patents.
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