Fluorine-lined Butterfly Valve Overview of Pneumatic-lined Butterfly Valves Overview of Pneumatic Butterfly-lined Butterfly Valves There are three types of pneumatic wafer-lined PTFE-lined butterfly valve
s: D671F sealed lined with PTFE, D671F4 fully lined with PTFE, and D671F46 fully lined with PFEP. The pneumatic butterfly valve is a complete set of automatic control valve
composed of centerline fluorine-lined butterfly valve, pneumatic actuator, positioner, limit switch, solenoid valve, filter pressure reducing valve and other components. The shell and valve plate of the D671F pneumatic fluorine-lined butterfly valve can be selected from four materials: gray cast iron, ductile iron, carbon steel and stainless steel; the lining material can be selected from fluorine-containing materials such as F4, F46, and PFA. Pneumatic fluorine-lined butterfly valve is suitable for all kinds of strong corrosion, weak corrosion or certain cleanliness conditions with temperature ≤ 150 ℃. It is used to adjust the flow and intercept the medium. Pneumatic fluorine-lined butterfly valve adopts PTFE-lined butterfly plate with spherical sealing surface. Suitable for applications requiring reliable sealing and good regulation characteristics. The valve body adopts a split type, and the seal at both ends of the valve shaft is controlled by the fluorine rubber on the rotating base surface between the disc and the valve seat; it ensures that the valve shaft does not come into contact with the fluid medium in the cavity. It is widely used in the transportation of liquid and gas (including steam) in various types of industrial pipelines, and the use of severe corrosive media, such as sulfuric acid, hydrofluoric acid, phosphoric acid, chlorine, strong alkali and other highly corrosive media . Structural features of pneumatic fluorine-lined butterfly valve 1. Novel and reasonable design, unique structure, light weight, rapid opening and closing. 2. Small operating torque, convenient operation, labor-saving and smart. 3. It can be installed in any position and easy to maintain. 4. The seals can be replaced, and the sealing performance is reliable to achieve zero leakage of bidirectional sealing. 5. The sealing material has the characteristics of aging resistance, corrosion resistance and long service life. Pneumatic fluorine-lined butterfly valve adopts standard design standard: GB/T2238-1989 flange connection size: GB/T9113.1-2000; GB/T9115.1-2000; JB78 structure length: GB/T12221-1989 Pressure test: GB/T13927 -1992; JB/T9092-1999
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