What is triple eccentric butterfly valve?

The three eccentric butterfly valve refers to the valve stem whose axis deviates from the center of the disc and the center of the body at the same time, and the rotation axis of the valve seat has a certain angle with the channel axis of the valve body.

Triple eccentric butterfly valve is widely used in metallurgy, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temperature ≤ 425 ℃ for regulating flow and carrying off fluid. The material is divided into: cast iron, cast steel and stainless steel.

Three eccentric butterfly valves are widely used in metal treatment, electric power, petrochemical industry, water supply and drainage, municipal construction and other industrial pipelines with medium temperature ≤ 425 ℃ for regulating flow and carrying off fluid. The butterfly valve adopts three eccentric structure. The valve seat and disc sealing surface are made of stainless steel with different hardness. It has good corrosion resistance and long service life. The valve has multi-level sealing function. The product meets the national valve pressure test standard GB / T13927-92.

The three eccentric butterfly valve adopts the three eccentric metal sealing structure. The valve stem axis is offset from the sealing surface of the butterfly plate and the channel axis of the valve body. The rotation axis of the valve seat forms an eccentric angle with the channel axis of the valve body. When opening, the sealing surface of the butterfly plate will immediately separate from the sealing surface of the valve seat at the moment of opening. When it is closed, only at the moment of closing, the conical sealing surface of the butterfly plate will contact and compress the conical sealing surface of the valve seat. Therefore, there is no friction between the valve seat and the sealing surface on the butterfly plate, which eliminates the possibility of wear and leakage.

[product features]:

1. It has the characteristics of high temperature resistance, high pressure resistance, corrosion resistance and wear resistance.

2. Compact structure, small volume, light weight, flexible operation and convenient use.

3. The valve has no flange, which brings great convenience and beauty to the pipeline and thermal insulation binding.

4. Welded structure is adopted to make the plane of valve and pipeline achieve permanent zero leakage.

5. It adopts three-dimensional eccentric elastic or multi-level hard sealing structure, with reliable sealing performance and zero leakage.

As the crystallization of new valve technology, triple eccentric butterfly valve will be paid more and more attention by users and designers because of its advantages and disadvantages. The maximum pressure level can reach 2500 pounds, the standard diameter can reach 48 inches, and the clamp, lug, flange, ring connection, butt welding, jacket and various structural lengths can be corresponding. Moreover, due to the large choice of materials, high and low temperature and various acid, alkali and other corrosive media can also be corresponding freely. Especially in the aspect of large diameter, with its advantage of zero leakage and on the shut-off valve, it is constantly replacing the bulky gate valve and ball valve. Similarly, with its excellent regulation function and on the regulation valve, it is also constantly replacing the bulky stop valve.