Triple Offset Butterfly Valve
Here is the china double eccentric butterfly valve.To withstand high temperature, the metal seal must be used, but large leakage; For zero leakage, rubber seal must be used, but not high-temperature resistant. In order to overcome the contradiction of the double eccentric butterfly valve,the triple offset butterfly valve was carried out.
The structural characteristics of the double eccentric eccentric axis of the stem position at the same time, make the butterfly plate type sealing face of the cone axis deflection in the cylindrical axis of ontology, that is to say, after the triple eccentric, butterfly plate sealing section is no longer true circle, but the ellipse, and so the seal face shape asymmetry, tilt to the center line of the ontology, on the other side is parallel to the centerline of ontology. The biggest characteristic of the triple eccentric is fundamentally changed the seal structure and seal position is no longer, but the torque seal, namely not rely on the elastic deformation of the seat, but completely rely on the seat of the contact pressure to achieve sealing effect, thus solved the problem of metal seated zero leakage at a stroke, and because of the contact pressure and the medium is proportional to the pressure, resistance to high pressure high temperature is solved. Are abundant as producers oftriple offset butterfly valve,our valves service life is long, the key is the beginning of the material and material technology progress, many newhigh-performance materials developed in recent years, also appeared many casting, welding, spray welding, painting, such as molding, sintering, composite and surface treatment of new technology and new technology and equipment. Paying attention to the information about material science and applying it to the valve in time is an important technical way to develop high performance and high parameter valve.And higer-quality double eccentric butterfly valve chinacan be offered.
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