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Diaphragm valve is a special form of cut-off valve, which has the following characteristics compared to other valves:
1. Elastic sealed opening and closing parts to ensure no internal leakage;
2. Streamlined flow path, making pressure loss small;
3 no filler, so there is no leakage;
4. The valve body and the cover are separated by an intermediate diaphragm so that the valve cover, valve stem and other parts above the diaphragm are not eroded by the medium;
5. The diaphragm can be replaced and the maintenance cost is low;
6. The diversity of lining materials can be applied to various media and have good corrosion resistance.