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. 2. 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. 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.
Size: 3”-48”(Class 150LB~600LB)
Connection Ends: Flange, Wafer, Lug
Design & Manufacture: API 609/ ASME B16.34
Face to Face Standard: ASME B16.10, API609
Ends: ASME B16.5
Test & Inspect: API598
Range of Materials:
Cast iron, cast steel, stainless steel, Alloy Steel, Duplex Steel etc.
Mounting pad designed as per ISO 5211.
Low emission packing.
Integral hardfaced, longer life and less maintenance
Rigid body structure.
Widely used in metallurgy, electric power, petrochemical, water supply and drainage, municipal construction and other industrial pipelines where the medium temperature is ≤425°C. It is used for adjusting flow and carrying and breaking fluid.