On the basis of the introduction of foreign advanced technology, the rigid butterfly valve adopts precision J-shaped elastic sealing ring and three-eccentric multi-layer metal hard seal structure, which is widely used in industrial pipelines with medium temperature ≤425 ° C, such as gold, electric power, petrochemical industry, water supply and drainage, and municipal construction, to regulate the flow and carry the current body. The valve adopts three eccentric structure, the valve seat and plate sealing surface are made of different hardness and stainless steel, with good corrosion resistance, long service life, the valve military seal function, the product conforms to the national GB/T13927-92 valve pressure test standard.

Features:

1, the valve adopts three eccentric sealing structure, the valve seat and the butterfly plate almost no wear, with more and more tight sealing function.

2, the sealing ring is made of stainless steel, with the double advantages of metal hard seal and elastic seal, regardless of low temperature and high temperature, it has excellent sealing performance, corrosion resistance, long service life and other characteristics.

3. The sealing surface of the plate is surfacing cobalt-based cemented carbide, which is wear-resistant and has long service life.

4, large specifications of the plate quilted structure, high strength, large flow area, small flow resistance.

5, the valve has a bidirectional sealing function, installation is not limited by the flow of the medium, is not affected by the spatial position, can be installed in any direction.

6, the drive device can be installed in multiple stations (rotation 90° or 180°), easy to use.

Structural characteristics:

1, under high temperature and high pressure conditions, it still has stable sealing performance. Its special sealing system guarantees high sealing performance in all temperature ranges from ultra-low temperature to ultra-high temperature.

2, three-dimensional eccentric sealing system combined with human optimization design, so that the valve opening resistance is small. The sealing surface of the butterfly plate is a cone raised upward. When it is opened, all points on the circular surface of the butterfly plate are separated from the sealing ring at the same time, and solid objects are not easy to accumulate on the sealing surface. The valve closing process is accomplished by elastic compression of the seal ring.

3, there is no phase card between the butterfly plate and the sealing ring.

4, the sealing performance of the valve is not affected by temperature changes.

5. The valve stem shaft diameter seal is made of graphite pressing sealing ring. In summary, zero leakage is ensured, and the metal seal is zero leakage before, during and after the fire, so it is a geological fire type.