Pneumatic diaphragm valve has two main advantages: one is the valve does not need a separate stem packing seal structure, diaphragm in cutting off the medium at the same time as the stem seal, and the other is the flexible diaphragm closed reliable, even to the sewage can be done a good cut off. Therefore, the control mechanism and the media channel is completely separated, so that the pneumatic diaphragm valve can not only be applicable to the food industry and the pharmaceutical industry, but also to some difficult to transport the medium and the greater risk of the medium.
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