high performance butterfly valve from keta valve manufacture in China

Double eccentric （offset ) butterfly valve

Regulating and intercepting equipment for fluid way pipelines

Double eccentric (offset ) butterfly valve is also known as high performance butterfly valve, mainly used in water plants and other fluid , power plants, steel smelting, chemical industry, water source engineering, environmental facilities construction and other systems drainage, especially suitable for water channel road, as adjustment and closure equipment. Compared with the center line butterfly valve, the double eccentric butterfly valve is more resistant to high pressure, longer life and good stability.

Compared with other valves, the larger the diameter, the lighter the material, and the lower the cost. However, because there is a butterfly plate in the middle, the flow resistance is large, so the butterfly valve less than 24" is not very meaningful.

Working principle of high performance butterfly valve

Double eccentric butterfly valve is further improved on the basis of single eccentric butterfly valve. Its structural characteristics are that the axis of the valve stem deviates from the center of the butterfly plate and from the center of the body. The effect of double eccentricity enables the disc to be quickly removed from the seat after the valve is opened, greatly eliminating unnecessary excessive squeezing and scratching between the disc and the seat, reducing the opening resistance, reducing wear, and improving the seat life. The scratch is greatly reduced, and at the same time, the double eccentric butterfly valve can also use metal seats, which improves the application of butterfly valves in high temperature fields.

Structural characteristics of high performance butterfly valves

1 Reasonable design, compact structure, easy assembly and disassembly, easy maintenance repair replace disc seat and seal rings .

2 Eccentric structure, reduce the friction of the seal ring, extend the service life of the valve.

3 Completely sealed, zero leakage. It can be used in ultra-high vacuum condition

4 Replace the valve plate seal ring, butterfly plate, rotating shaft and other materials, can be applicable to a variety of media and different temperatures

throughout the pictures below about high performance butterfly valve from keta valve manufacture applicable