1.the main structuralforms:

The valve consists of body, rubber cover, cover and other parts.

2.工作原理:

Control mediurm without input, cavity and the atmosphere between the rubber sleeve and the valve body is comrmunicated with the rubber sleeve, by fluid pressure in the outward tension state. Because the sleeve pipe with reinforcing ply angle arrangement,the tube axial and radial pressure balance each other,so the sleeve length and diameter not because of fluid pressure changes.When the control medium enters into the cavity between the sleeve and the valve body, the closure rubber sleeve deformation under pressure in the medium.

3.安装和维护:

阀门在管道安装中不受任何限制, 介质流动方向.

阀门维护成本低,只能根据实际使用情况更换胶套.