Pneumatic High Performance Double Eccentric Butterfly Valve introduction
Double eccentric butterfly valve is also called high-performance butterfly valve. It is mainly used for water drainage in water plants, power plants, steel plants, chemical engineering, water source engineering, environmental facilities construction, etc. It is especially suitable for use in water pipelines as regulating and shut-off equipment. Compared with the centerline 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 caliber, the lighter the material and the lower the cost. But because there is a butterfly plate in the middle, the flow resistance is large, so a butterfly valve smaller than DN200 is not very meaningful.
Pneumatic High Performance Double Eccentric Butterfly Valve Features
The Valve is with Double Eccentric Design
When valve is opened, eccentric disc is rotated not based on valve seat, so as to reduce the torque and seat wearing. At the same time, the sealing surface quickly leaves valve seat sealing surface, so that the butterfly plate and valve seat sealing surface only has a very short contact, to extend the service life.
Pneumatic High Performance Double Eccentric Butterfly Valve Lip Seal
When closed, the PTFE lip seal (A) is bent against the outer edge of the disc (B) of the spherical fan to ensure a reliable seal. The body (C) and the insert (D) secure the seal seat in place and isolate the sealing surface from the media to prevent corrosion.
Unique single-chip PTFE lip valve seat, in every direction of the valve under the pressure of the medium, the valve seat to the butterfly plate sealing surface deflection.
Body inserts prevent seat wear and corrosion. But also makes the replacement of the seat, do not need to remove the shaft and butterfly plate.
Maintenance more convenient.
This product has excellent control characteristics, flow characteristics of the curve and other percentage changes, a wide range of adjustment, sealing performance advantages. Is a fully embodies the efficient, new concept of the valve design concept.
Pneumatic High Performance Double Eccentric Butterfly Valve Classification
