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The maintenance of stainless steel sanitary diaphragm valve has strict requirements

by:Mayer     2021-08-27
The maintenance of stainless steel sanitary diaphragm valve has strict requirements. Diaphragm valve is a special form of shut-off valve, which appeared in the 1920s. Its opening and closing part is 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 parts, so it is called a diaphragm valve. The characteristics of the diaphragm valve are as follows: The most prominent feature 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 located above the diaphragm are not corroded by the medium, and the packing seal structure is omitted, and No medium leakage occurs.   1. The diaphragm made of rubber or plastic with soft seal has better sealing performance. Since the diaphragm is a vulnerable part, it should be replaced regularly according to the characteristics of the medium.  2. Limited by the diaphragm material, the diaphragm valve is suitable for low pressure and relatively low temperature occasions.  Stainless steel sanitary diaphragm valve uses the valve stem to press the elastomer film on the valve seat to block the gas path. Turning the handwheel can drive the valve stem to move up and down, so that the diaphragm leaves the valve seat to open the valve or the diaphragm is pressed against the valve seat to close the valve. If this kind of valve adopts nitrile rubber diaphragm, it is suitable for non-corrosive gas on the front stage and pre-exhaust pipeline and the temperature is -25~80℃. If a fluorine rubber diaphragm is used, it can be used in a high vacuum system, and the operating temperature range is -30~150℃. Although the stainless steel sanitary diaphragm valve has a variety of unique properties, each valve body has a service life and a maintenance cycle in use. Only when the sanitary diaphragm valve is maintained can the valve body perform better. Its performance can better serve customers and have a longer service life. The same requirements apply to sanitary diaphragm valves. Be sure to pay attention to maintenance during use. The maintenance requirements are very detailed in the instruction manual. The maintenance work must be done carefully during the use of the valve. The maintenance of the stainless steel sanitary diaphragm valve has certain requirements. Because the diaphragm in this valve body structure has strict requirements in daily storage, the valve body must be placed in a dry and ventilated room to prevent the diaphragm from aging Cause damage to the valve body. In addition to the maintenance of the sanitary diaphragm valve, in the process of use, the sanitary diaphragm valve is also an important maintenance component. According to different media, the maintenance cycle of the diaphragm is different. The diaphragm needs to be replaced according to different cycles. Only in this way can the valve body be used better. The metal surface of the valve body must be kept clean and oil-free, and rust remover should be applied appropriately to keep the valve body from being severely oxidized and corroded.
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