Features and technical parameters of large-diameter medium linear rubber butterfly valve Main features of large-diameter medium linear rubber butterfly valve are: low cost, exquisite valve design, reliable performance, replaceable rubber seat (replaceable rubber seat can effectively reduce maintenance costs), midline structure suitable for two-way flow of media, fully rubber lined valve body and valve plate can effectively improve corrosion resistance The light weight valve plate design can make the valve run smoothly

(2) There should be no negative pressure. The fluorine lined valve should avoid negative pressure in the pipeline. If there is negative pressure, it is easy to cause the fluorine lined plastic layer in the valve cavity to be sucked out (bulged out) and shelled, leading to valve opening and closing failure.