铸钢法兰球阀的优点

The advantages of the ball valve of the cast steel flange

铸钢法兰球阀在管路中主要用来做切断、分配和改变介质的流动方向。球阀是近年来被广泛采用的一种新型阀门，它具有以下优点：

The cast steel flange ball valve is used in the pipeline to cut, distribute and change the flow direction of the medium. Ball valve is a new type of valve which has been widely used in recent years. It has the following advantages:

1． 流体阻力小，其阻力系数与同长度的管段相等。

1. the fluid resistance is small, and the resistance coefficient is equal to the tube length of the same length.

2． 结构简单、体积小、重量轻。

The 2. is simple in structure, small in size and light in weight.

3． 紧密可靠，目前球阀的密封面材料广泛使用塑料、密封性好，在真空系统中也已广泛使用。

3. closely dependable, the sealing surface materials of the ball valve are widely used in plastic and sealed, and are also widely used in the vacuum system.

4． 操作方便，开闭迅速，从全开到全关只要旋转90°，便于远距离的控制。

4. easy operation, open and close rapidly, from fully open to fully closed as long as 90 degree rotation, facilitate remote control.

5． 维修方便，球阀结构简单，密封圈一般都是活动的，拆卸更换都比较方便。

5. convenient maintenance, the ball valve structure is simple, sealing ring is generally active, disassembly and replacement is more convenient.

6． 在全开或全闭时，球体和阀座的密封面与介质隔离，介质通过时，不会引起阀门密封面的侵蚀。

6. the sealing surface of the ball and the seat is isolated from the medium when it is fully open or completely closed. When the medium is passed, it will not cause the erosion of the sealing surface of the valve.

7． 适用范围广，通径从小到几毫米，大到几米，从高真空至高压力都可应用。 球旋转90度时，在进、出口处应全部呈现球面，从而截断流动。

7. a wide range of applications, path from a small to a few millimeters, a few meters large, from high vacuum to high pressure can be applied. When the ball rotates at 90 degrees, the sphere should be all presented at the inlet and outlet, thus truncating the flow.