In the 30s, the butterfly valve was invented in United States, introduced to the Japan in the 50s, and was widely used in Japan in the 60s, and it was promoted in China after the 70s. At present, b...
(TWS) Tianjin Tanggu Water Seal Valve Co., Ltd. is pleased to announce its participation in the World Valve Exhibition in Suzhou. The exhibition is one of the most popular events in the valve indu...
Sealing is to prevent leakage, and the principle of valve sealing is also studied from leakage prevention. There are many factors that affect the sealing performance of butterfly valves, mainly inc...