Patent for High-seal Check Valve

Financial Circle reported on July 19, 2025 that, according to information from the State Intellectual Property Office, Zhejiang Naibang Valve Co., Ltd. has obtained a patent entitled "A High-Sealing Check Valve" with the authorization announcement number CN223120730U. The application date is June 2025.

The patent abstract shows that the utility model discloses a high-sealing check valve, which includes a valve body. A cut-off surface is formed in the valve body, and a valve clack is arranged. A valve stem connected to the valve clack and driving the valve clack to perform cut-off is arranged on the valve body. 

An actuator connected to the valve stem is arranged on the valve body. A sealing member connected to the valve clack is arranged in the valve body. The sealing member includes a sealing sleeve and a driving member. The sealing sleeve is slidably sleeved and slides on the valve stem, and one end of the sealing sleeve extends to the flow channel. 

When the actuator drives the valve clack to perform cut-off, the driving member drives the sealing sleeve to move to abut against the valve clack. The driving member includes a driving sleeve, which slides on the valve body. One end of the driving sleeve is located outside, and the driving sleeve is threadedly connected to the valve body.