1.The middle cavity of the valve adopts a pressure self-tight sealing structure. The higher the pressure in the inner cavity, the better the sealing performance;

2.The valve pressure bearing parts are made of high-quality heat-resistant alloy steel;

3.The sealing surface of the valve disc and valve seat is overlaid with stellite cobalt-based hard alloy;

4.The valve disc rotates around the shaft pin outside the valve seat to reduce the violent impact when closing.