K205 Double Eccentric Butterfly Valve

Advantages of Eccentric Butterfly Valve

• Eccentric butterfly valves require only little space within pipeline systems.

• Due to the double-eccentric valve bearing, the strain of elastomers is reduced at the sealing area thereby cutting maintenance efforts.

• Compared with closure devices positioned vertically to the pipeline, they feature a more favourable inflow to the clap disc over the entire pivoting range.

• And last but not least, they have lower actuating moments, especially with larger nominal diameters.

Applications of Eccentric Butterfly Valve

Eccentric butterfly valves are utilised in water intake systems, cooling water systems, filtering systems and industrial waste water in the power industry, chemical and petro chemical waste water plants, steel industry, etc.

The eccentric butterfly valve is further improved on the basis of the single eccentric butterfly valve. Its structural feature is that the shaft center of the valve stem deviates from the center of the butterfly plate and the center of the body.

The eccentric effect enables the butterfly plate to be released from the valve seat immediately after the valve is opened, which greatly eliminates unnecessary excessive extrusion and scratching between the butterfly plate and the valve seat, reduces the opening resistance, reduces wear and improves The life of the valve seat is improved. The scraping is greatly reduced, and at the same time, the eccentric butterfly valve can also use a metal seat, which improves the application of the butterfly valve in the high temperature field. But because its sealing principle is a positional sealing structure, that is, the sealing surface of the butterfly plate and the valve seat is in line contact, and the elastic deformation caused by the butterfly plate squeezing the valve seat produces a sealing effect, so the closing position is very demanding (especially metal Valve seat), low pressure bearing capacity, which is why traditionally people think that butterfly valves are not resistant to high pressure and have large leakage. 

Main Features of Eccentric Butterfly Valve

① Reasonable design, compact structure, easy assembly and disassembly, and easy maintenance.

② The eccentric structure is adopted to reduce the friction of the sealing ring and prolong the service life of the valve.

③ The valve plate adopts the "T" type structure, and the sealing surface is linearly sealed.

④ Completely sealed, zero leakage.

⑤ Replace the material of the valve plate sealing ring, "O" ring, butterfly plate, shaft, etc., which can be applied to a variety of media and different temperatures.

About KXC

KXC is a leading Eccentric Butterfly Valve manufacturer and supplier in China. If you have demands on Eccentric Butterfly Valve, please feel free to contact us to get more detailed information from us. We would like to provide you with more specifications of Eccentric Butterfly Valve. We also customize Eccentric Butterfly Valve as you required. Welcome to get free quotation of Eccentric Butterfly Valve by clicking the button below.