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How can the sealing structure of forged steel globe valve see its simplicity?

Release time: 2018.12.28 viewed:  
  
How can the sealing structure of forged steel globe valve see its simplicity? Fluorine lined globe valve belongs to forced sealing valve, so when the valve closes, pressure must be exerted on the disc to force the sealing surface not to leak. When the medium enters valve 6 from below the disc, the resistance to be overcome by the operating force is the friction between the stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the stem is larger, otherwise the stem top will occur.

The sealing structure of fluorine-lined globe valve includes cover, cap and fluorine-lined stem. The fluorine-lined stem penetrates the cap and the cap into the valve body. The inner side of the product cap is lined with a sealing chamber. The product lining, cap and fluorine-lined stem are surrounded by a sealing chamber. The product's sealing chamber is filled with a sealing ring. The inner ring of the product's sealing ring is provided with an inner O-ring, and the outer ring of the product's sealing ring is set up. Outer O-ring. In the sealing structure of the fluorine lined globe valve, there are fewer installations in the sealing chamber, the processing is easier and the structure is simpler.
Fluorine lined globe valve belongs to forced sealing valve, so when the valve closes, pressure must be exerted on the disc to force the sealing surface not to leak. When the medium enters valve 6 from below the disc, the resistance to be overcome by the operating force is the friction between the stem and packing and the thrust generated by the pressure of the medium. The force to close the valve is greater than the force to open the valve, so the diameter of the valve stem is larger, otherwise the failure of the top bending of the valve stem will occur. After the emergence of self-sealing valve, the medium flow direction of fluorine-lined globe valve changes from above the valve disc to enter the valve chamber. Under the action of medium pressure, the force of closing the valve is small, while the force of opening the valve is large, and the diameter of the valve stem can be reduced accordingly. At the same time, under the action of medium, this form of valve is also more tight.
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