How much is the torque of pneumatic wafer butterfly valve with signal switch? The sphere for fixing the pneumatic butterfly valve is fixed in the middle of the valve body through the upper and lower valve stems, and there is no position movement after pressure. Sealing of fixed pneumatic butterfly valve The difference between fixed pneumatic butterfly valve and floating pneumatic butterfly valve is that the plate spring or cylindrical compression spring on the seal seat provides sufficient preload to ensure sealing, which belongs to double side forced sealing. The ball is supported by upper and lower bearings to reduce friction, eliminate excessive torque caused by the huge sealing load formed by the ball and seal seat driven by the inlet pressure, and save operation effort. The fixed pneumatic butterfly valve is double-sided and double-sided sealing, which will form the sealing cavity between the two sealing seats. To avoid danger, the fixed pneumatic butterfly valve must be designed with an automatic pressure relief function, that is, when the pressure of the stagnant medium in the valve cavity rises abnormally and exceeds the preload of the spring, the valve seat retracts from the ball to achieve the effect of automatic pressure relief, and the valve seat automatically recovers after pressure relief. The fixed pneumatic butterfly valve is widely used in various process pipelines with large diameter and high pressure due to its structural characteristics. As the upper and lower valve stems need to be assembled, only pneumatic butterfly valves with DN50 or above nominal diameter can be produced, and the nominal diameter is too small for assembly.
、 The pneumatic butterfly valve power component is mainly used to control the valve and is closely connected with the valve. This component is mainly driven by electricity. During operation, it is affected by the stroke, rotation torque and axial direction driving force. Because the special properties and utilization efficiency of the valve power component depend on the type of valve, the operation specification of the component and the position of the valve on the pipeline equipment, Because the customer needs to know and master the selection and assembly method of power parts, and then select the appropriate parts, the overload situation needs to be fully considered. Overload actually means that the torque force of work transfer is greater than the torque force of control. This inspection link is a very important part of the whole valve inspection.
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