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 center line of shaft offsets center line of the sealing surface, the shaft center line is slightly deviated from center line of the pipeline, and center line of valve body sealing face (oblique circular cone) and center line of pipeline form an angle of β. 3. 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.
Design Feature:
- Available in Metal to Metal Sealing or Multi-Player or soft sealing
-Low leakage packing
-Extended bearing design
-Wear-free seat
-Laminated seal
-Low torque
-Blowout-proof stem
