Working principle and purpose of the product:

The D673H pneumatic clamp type hard seal butterfly valve adopts a precision J-shaped elastic sealing ring and a three eccentric multi-level metal hard seal structure, which is used in industrial pipelines such as metallurgy, power, petrochemicals, water supply and drainage, and municipal construction with medium temperature ≤ 425 ℃, for regulating flow rate and carrying capacity. The valve adopts a three eccentric structure, and the valve seat and disc sealing surface are made of different hardness and stainless steel, which has good corrosion resistance and long service life.

Product Structure Features:

1. Adopting a three eccentric sealing structure, the valve seat and butterfly plate have almost no wear, and have a sealing function that becomes tighter as viewed.

2. The sealing ring is made of stainless steel, which has the dual advantages of metal hard sealing and elastic sealing. It has excellent sealing performance in both low and high temperatures, corrosion resistance, and long service life.

3. The sealing surface of the disc plate is made of welded cobalt based hard alloy, which is wear-resistant and has a long service life

4. The large-sized butterfly plate adopts a frame structure with high strength, large overcurrent area, and low flow resistance.

5. This valve has bidirectional sealing function, and is not limited by the flow direction of the medium or the spatial position during installation. It can be installed in any direction.

6. The drive device can be installed in multiple stations (rotated 90 ° or 180 °) for easy user use.