1. Defect characteristics
Unfused refers to the phenomenon that the weld metal is not completely melted and bonded with the base metal or between the layers of the weld metal.
Failure to penetrate ...
Ball valve is a common fluid control equipment, is widely used in petroleum, chemical, water treatment, food and other industries. This paper will introduce the structure, working principle, classi...
1. Basic Definition and Structure
A soft sealing flanged concentric butterfly valve (also known as a “center-line butterfly valve”) is a quarter-turn rotary valve designed for on/off or...
TWS Valve will attend the 2018 PCVEXPO Exhibtion in Russia
The 17th International Exhibition PCVExpo / Pumps, Compressors, Valves, Actuators and Engines.
Time: 23 – 25 October 2018 • Mosc...
In the daily use of butterfly valves, various failures are often encountered. The leakage of the valve body and bonnet of the butterfly valve is one of the many failures. What is the reason for thi...
Both the handle lever butterfly valve and the worm gear butterfly valve are valves that need to be operated manually, commonly known as manual butterfly valves, but they are still different in use....
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