Wedoany.com Report-Oct. 16, A state-owned vertically integrated power company responsible for power generation, transmission, distribution, and sales. Recently, Henan Quanshun Flow Control Technology Co., Ltd. achieved another breakthrough in valve technology. Its patent for a “large-diameter butterfly valve with a self-closing function” has been authorized by the China National Intellectual Property Administration, adding another layer of safety to industrial pipeline systems.

The patent successfully resolves the long-standing “over-center reversal” issue that has troubled the large-diameter valve industry. Through an innovative reset spring design, the butterfly valve can reliably return to its initial position and complete the automatic closing process under complex operating conditions. This technological advancement holds significant importance for enhancing pipeline safety in industries such as petroleum and chemical engineering.

The valve consists of an installation pipe, within which a matching sealing plate and butterfly plate are installed. The core innovation lies in the coordinated action between the reset assembly and the limiting plate. When abnormal pressure occurs in the pipeline medium, the reset spring drives the reset rod to automatically return the butterfly plate to its initial position, effectively preventing control failure caused by pressure fluctuations.

As China accelerates its industrial transformation and upgrading, demand for high-performance and highly reliable valves will continue to grow. The authorization of this patent not only demonstrates Quanshun Flow Control’s technological innovation capability but also reflects the broader advancement of China’s valve industry toward higher-end and intelligent development.