US Patent Issued on Feb. 18 for "Air volume control valve capable of accurately measuring air volume" (Chinese Inventors)

ALEXANDRIA, Va., Feb. 19 -- United States Patent no. 12,228,304, issued on Feb. 18.

"Air volume control valve capable of accurately measuring air volume" was invented by Lin Dong (Beijing), Ning Sun (Beijing) and Xiangfang Li (Beijing).

According to the abstract* released by the U.S. Patent & Trademark Office: "An air volume control valve capable of accurately measuring an air volume is provided. The air volume control valve includes a round-shaped valve body, and a valve blade and an orifice plate provided in the round-shaped valve body, where the orifice plate is located upstream of the valve blade; an upstream pressure tapping port and a downstream pressure tapping port are respectively provided upstream and downstream of the orifice p...