Normal theoretical weight of lq type picture of pneumatic diamond valve air butterfly valve? 2) Reduce S, increase the working opening, improve the service life, reduce S, that is, increase the loss of the system except for the butterfly valve, so that the pressure drop distributed to the valve will be reduced. In order to ensure that the flow passes through the butterfly valve, the butterfly valve opening will be increased, and at the same time, the pressure drop on the valve will be reduced, so that cavitation and erosion will also be weakened. The specific methods are as follows: orifice plate is set behind the valve to throttle the consumption pressure drop; Close the manual valve in series on the pipeline until the butterfly valve has a better working opening. This method is very simple, convenient and effective when the valve is selected to be large at the beginning and operated at a small opening.
、 Precautions for initial operation When the pneumatic butterfly valve is operated at the beginning, it must pass the air or water leakage test. Some media may remain on the contact surface of the valve during the test. If these media react with the working media, attention must be paid. That is to say, during the initial operation, the pipeline must be completely cleaned in the fully open state, so as not to contaminate the sealing surface to prevent damage to the sealing surface. As a reminder, the valve shall not be opened or closed during flushing.
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