The GAIRUI Metal Seated Butterfly Valves adopts three eccentric seal structure, the seat and butterfly plate have almost no wear and tighter sealing function. The seal ring is welded with stainless steel. It has the dual advantages of metal hard seal and elastic seal. No matter at low temperature and high temperature, it has excellent sealing performance and corrosion resistance. With long life and so on, the seal face of the butterfly plate is hardfaced with cobalt based hard alloy, the seal face is wear-resistant, and the length of the butterfly plate is long, the strength is high, the overflow area is large, the flow resistance is small, the metal hard seal butterfly valve has the function of two-way sealing, it is not restricted by the flow direction of the medium, and is not subject to the space position. It can be installed in any direction.