Butterfly valve refers to the closing part (valve disc or butterfly plate) as a disc, around the valve shaft rotation to reach the opening and closing of a valve, in the pipe mainly cut off and thr...
The wafer dual plate check valve is also a type of check valve with a rotary actuation, but it is a double disc and closes under the action of a spring. The disc is pushed open by bottom-up fluid, ...
WEFTEC, the Water Environment Federation’s Annual Technical Exhibition and Conference, is the biggest meeting of its kind in North America and offers thousands of water quality professionals ...
1.The stem of the OS&Y gate valve is exposed, while the stem of the NRS gate valve is in the valve body.
2.The OS&Y gate valve is driven by the thread transmission between the valve ...
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. 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 ...
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