The Opening And Closing Part Of The Pneumatic Diaphragm Valve Is A Diaphragm Made Of Soft Material.

Sanitary Diaphragm Valve is a special type of shut-off valve. Its opening and closing parts are a diaphragm made of soft material, which separates the inner cavity of the valve body from the inner cavity of the valve cover and the driving components, so it is called a pneumatic diaphragm valve. The most prominent feature of the pneumatic diaphragm valve is that the diaphragm separates the inner cavity of the lower valve body from the inner cavity of the upper valve cover, so that the valve stem, valve disc and other parts above the diaphragm are not corroded by the medium, eliminating the packing sealing structure and preventing the medium from leaking out.
1. Pneumatic diaphragm valves should be installed vertically on the pipeline. Those with large volume and weight and used in vibration situations should be supported and clamped.
2. Pneumatic diaphragm valves should generally be equipped with a bypass pipeline so that they can be converted into bypass operation when the diaphragm fails or is repaired, so that the production process can proceed normally. In general unimportant occasions, the bypass pipeline can be omitted after installing a handwheel mechanism for manual operation, and the valve opening can be limited at the same time. When the handwheel mechanism stops using, it should be restored to the original neutral position to facilitate the normal operation of the automatic control system.
3. When cleaning the pipeline, the adjustment should be at a larger opening to remove the dirt in the pipeline.

4. If the valve body is lined with an anti-corrosion layer, corrosion-resistant cushions should be used when installed on the pipeline, and care should be taken not to damage the valve body flange sealing surface.

5. The diaphragm and lining should be checked regularly to prevent damage to other parts and accidents caused by corrosion and rupture.

The above are the details that need to be paid attention to when using and installing the pneumatic diaphragm valve, and it has two main advantages: one is that the valve does not require a separate valve stem packing sealing structure, and the diaphragm plays a sealing role for the valve stem while cutting off the medium. The second is that the diaphragm with strong flexibility is reliable in closing, and even the dirty liquid can be well cut off. Therefore, the operating mechanism and the medium channel are separated, making the pneumatic diaphragm valve not only suitable for the food industry and the medical and health industry, but also for some difficult-to-transport media and dangerous media.