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Problems Existing in Use of Triple Eccentric Butterfly Valve
First, the butterfly plate of the Triple Eccentric Butterfly Valve is fixed with multi-layer soft and hard overlapping sealing rings. When the butterfly plate is open, the flow medium will directly wash the sealing surface. The soft sealing material in the metal interlayer will directly affect the sealing performance of the valve in the long-term erosion of the medium.
2. Triple Eccentric Butterfly Valve are not suitable for valves with diameters less than DN200 because of their own structural constraints, the butterfly plate is very thick and the flow resistance is very large.
3. The sealing between the butterfly plate sealing surface and the seat of theTriple Eccentric Butterfly Valve is to press the butterfly plate to the seat by the moment of the transmission device. When the medium in the pipeline is in the positive flow state, the higher the pressure of the medium, the tighter the sealing extrusion. However, when the medium is countercurrent in the pipeline, the pressure of the medium may cause leakage of the seal.
In order to solve the problems existing in the use of tri-eccentric butterfly valve, a high-performance Triple Eccentric Butterfly Valve hard-sealed butterfly valve was developed. Triple Eccentric Butterfly Valve with bidirectional seal is composed of multi-layer stainless steel sheets on both sides of soft T-ring. The sealing surface of butterfly plate and valve seat is oblique conical structure. Then the alloy material with high temperature resistance and corrosion resistance is surfacing on the sealing surface of oblique conical structure. The spring fixed between the adjusting ring pressure plate and the adjusting bolt on the pressure plate are assembled together.
This special structure effectively compensates the elastic deformation between the axle sleeve and the valve body of the tri-eccentric butterfly valve, and perfectly solves the leakage problem of the Triple Eccentric Butterfly Valve in the process of two-way interchangeable medium transmission. The soft T-shaped multi-layer stainless steel sheets on both sides make up a sealing ring, which not only has the advantages of hard metal sealing material, but also has the characteristics of soft sealing material. Therefore, theTriple Eccentric Butterfly Valve with two-way sealing can maintain excellent sealing performance under low temperature and high temperature conditions.
Above is the Triple Eccentric Butterfly Valve in the use of the problems, Ruito's editor here reminds you that in the use of the process, we must pay attention to the occurrence of problems, if there is a fault, please contact the manufacturer in time.