✔︎ Valve body and valve seat of tri-eccentric hard sealing butterfly valve are combined components. 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 metal hard seal and soft seal. Sealing performance of zero leakage is guaranteed at low and high temperatures.

➤ Design standard → API 609

➤ Length of structure → API 609

➤ Flange connecting end → ASME B16.5/ASME B16.47

➤ Wall thickness → ASME B16.34

➤ Inspection and test → API 598

➤ Pressure and temperature rating → ASME B16.34

➤ Fireproof test → API 607

➤ Product scope → NPS 3″~NPS 80″, CL150~CL1500

➤ Product scope → NPS 3″~NPS 80″, CL150~CL1500

➤ Main body material → WCB, LCB, WCC, WC6, WC9, CF8, CF8M, CF3, CF3M, A890 4A, etc.

➤ Drive device → handle, worm wheel, electric, pneumatic, etc.