Structure and Performance Characteristics of Diaphragm Valve
Jan 05, 2023
Diaphragm valves consist of a corrosion-resistant diaphragm and a body lined with corrosion-resistant material. Diaphragm movement is used to regulate fluid flow. The valve body is made of cast iron, cast steel, or cast stainless steel, lined with various corrosion-resistant or wear-resistant materials. Diaphragm materials such as rubber and polytetrafluoroethylene. It is suitable for cut-off control or throttling control of strong acids, strong alkalis and strong corrosive fluids. There are two kinds of flow paths for diaphragm valves: weir type and straight-through type. There is a weir in the flow path of the valve body of the weir-type diaphragm valve. When the diaphragm is pressed against the weir, the fluid is blocked. The valve body of the straight-through diaphragm valve is straight through, and the fluid is blocked by moving the diaphragm down to compress the valve body. Since the valve body is straight through, the ability to block fluid and seal is not as good as that of the weir diaphragm valve.
The characteristics of the Sanitary Diaphragm Valve With Sample produced by Xi'an Changxin Metal Products Co., Ltd. are as follows.
1. The flow resistance is small and the structure is simple. Because there is no filler, the controlled fluid will not leak out.
2. The price is lower than that of control valves made of corrosion-resistant materials, and there is still a certain market in China.
3. It is suitable for the control of high viscosity and fluid with suspended particles.
4. The application uses corrosion-resistant materials to make the valve core, valve seat, and valve internals to improve the dynamic performance of the control valve and make the flow characteristics meet the control requirements.
5. Diaphragm valves used in industries such as sanitation and biochemistry are designed to be made of all stainless steel, and the flow paths are all polished to prevent stagnation in the valve body, thereby ensuring the safety required by the industry.
