The three-piece ball valve and gate valve are valves of the same type. The difference is that its closing piece is a sphere, which rotates around the center line of the valve body to achieve opening a ...
The three-piece ball valve also has internal thread connection, external thread connection, and internal and external thread connection. The thread usually uses 55° tapered pipe thread, which has good ...
In high-rise buildings, people often worry about the lack of new air volume, and designers often feel very aggrieved. Because from the drawing point of view, fresh air standard value is not low, but w ...
The structural characteristics of the centerline butterfly valve stem axis, butterfly plate center, the center of the body in the same position. Simple structure, easy to manufacture. Common rubber li ...
In high-rise buildings, people often worry about the lack of new air volume, and designers often feel very aggrieved. Because from the drawing point of view, fresh air standard value is not low, but w ...
At present, China's various industries commonly used in the production of valve metal valves, metal valves for use has been a century of history, during which although improved through structure and m ...
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