Prejudice against disc valves remains high in many asia-pacific countries due to the limitations of their own valve design and manufacturing levels and the influence of traditional textbooks. At the same time, the advanced industrial countries in Europe and America are vigorously promoting and actively using disc valves. The reason is very simple, the disc valve is not what it used to be.
Triple eccentric butterfly valves its scope of application has can withstand voltage up to 2500 pounds, low temperature resistant to - 196 ℃, 700 ℃, sealed to achieve zero leakage, regulation than 100: more than 1. That is to say, in all kinds of harsh, key process control line, both switch valve and control valve, as long as the proper selection, now that it is safe to use disc valve, and low cost.

Triple eccentric butterfly valves  to withstand high temperature, must use hard seal, but large leakage; To zero leakage, you must use a soft seal, but not high temperature resistance. In order to overcome the contradiction of double eccentric butterfly valve, the third eccentric butterfly valve was carried out. The structure 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 third 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 third 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.

The development of trieccentricity butterfly valve: since its appearance, trieccentricity disc valve has experienced the process of self-improvement and continuous development in order to meet the increasingly severe working conditions. Even if the most basic zero leakage, theoretically three eccentric disc valve can be achieved, but in fact, it still depends on careful design, precision manufacturing.
Triple eccentric butterfly valve applications: above all, triple eccentric butterfly valve as the crystallization of the latest technology, long Yang all kinds of valves, avoid all kinds of valve is short, will be more and more get the attention of the users and designers. Butterfly valve door co., LTD of triple eccentric butterfly valve, and its maximum pressure level can reach 2500 pounds, standard caliber 48 inches can be done, and the clamp, lugs, flange, ring, length of butt welding, jacket, all kinds of structure can be corresponding, more because T triple eccentric butterfly valve material of choice is very big, high and low temperature, and various kinds of acid, alkali and other corrosive medium can be freely. Especially in the case of large caliber, with its advantages of zero leakage, on the shutoff valves, are constantly replace bulky gate valve and ball valve, also, with its excellent control function, on the control valve, are also constantly replace heavy cut-off valve. As a fact, so far, triple eccentric butterfly valve has been used in oil and gas exploitation, offshore platforms, including China, oil refining, petrochemical industry, inorganic chemical industry, energy and other major industries in the field of process control and other important line.