OffSet Butterfly Valve
Dedicated butterfly valve can be designed according to the special requirements of the user
Valve body and valve seat of tri-eccentric hard sealing butterfly valve are combined component. Build up weld temperature, corrosion resistant alloy material on the valve seat sealing surface layer.
Tri-eccentric: the centerline of shaft offsets centerline of the sealing surface, the shaft centerline is slightly deviated from centerline of the pipeline, and centerline of valve body sealing face (oblique circular cone) and centerline of pipeline form an angle of β.
The multi-layer sealing ring is made of soft and hard laminated sheet metal. It has advantages of both of metal hard seal and soft seal. Sealing performance of zero leakage is guaranteed in low and high temperature.
- Operating temperature -196C – +315 C
- Metal seal, seal performance will not be impacted by low temperature
- Low temperature valve operation is basically the same as normal temperature
- Available online inspection, maintenance, replacement of seals
- All cryogenic valves are taken low temperature test in the company
- Apply to inconvenience replaceable maintenance cryogenic conditions, such as LNG, LPG, etc.
