Why can't the pneumatic switch butterfly valve rotate? The disk shaped butterfly plate of the hard seal pneumatic butterfly valve rotates around the axis, and the rotating point of view is between 0 ° and 90 °. When it rotates to 90 °, the valve is fully open. Now, the butterfly plate of the hard seal butterfly valve is installed in the diameter direction of the pipeline. Hard seal butterfly valve body in cylindrical channel. Hard seal butterfly valve, as a component used to realize on-off and flow control of pipeline system, has been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc.
、 1. Stainless steel butterfly valve plate: commonly used for liquid containing water, oil, weak acid and alkali or a small amount of suspended solids. In some working conditions, cast steel butterfly plate or galvanized butterfly plate is sometimes used to save costs. Stainless steel butterfly valves of pneumatic butterfly valves are divided into 304 stainless steel, 316 stainless steel, 316L stainless steel, etc., which can be selected as required.
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