隔膜阀的关闭与开启是通过来自管路的压力作用于增强橡胶隔膜实现的。
当压力介质进入阀门控制腔，隔膜下压，关闭阀门通道，当控制腔压力排向大气或下游管道，隔膜上升，阀门通道被打开。
阀门没有阀杆、密封垫、定向座等，通道中运动的**部件就是隔膜，所以不存在锈蚀及抱死现象，具有更高的稳定性。
多种结构形式及控制形式，可适用于多种的流体控制需要。
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型号 |
44 |
45 |
47 |
53 |
67 |
77 |
82 |
84 |
87 |
91 |
94 |
75 |
95 |
96 |
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连接方式 |
螺纹 |
法兰 |
法兰 |
法兰 |
法兰 |
螺纹 |
法兰 |
螺纹 |
螺纹 |
螺纹 |
螺纹 |
熔焊 |
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|
材质 |
铜 |
铸铁 |
铸铁 |
球墨铸铁 |
铸铁 |
铸铁 |
铜 |
铜 |
球墨铸铁 |
UPVC塑料 |
UPVC塑料 |
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口径mm |
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20 |
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* |
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25 |
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* |
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32 |
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● |
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40 |
● |
● |
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● |
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● |
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* |
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50 |
● |
● |
● |
● |
● |
● |
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● |
● |
● |
* |
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65 |
● |
● |
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● |
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* |
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80 |
● |
● |
● |
● |
● |
● |
● |
● |
● |
● |
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* |
● |
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90 |
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● |
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100 |
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* |
● |
● |
● |
● |
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● |
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110 |
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* |
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150 |
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● |
● |
● |
● |
● |
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● |
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160 |
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● |
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200 |
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● |
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● |
● |
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● |
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250 |
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● |
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● |
● |
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● |
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300 |
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● |
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● |
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● |
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350 |
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● |
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● |
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400 |
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● |
● |
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500 |
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● |
● |
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600 |
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● |
● |
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