Valveseat plate and the sealing surface for the oblique cone structure, in the oblique conical surface of valve plate welding temperature, corrosion resistant alloy material;
阀板与阀座的密封面为斜圆锥结构，在阀板斜圆锥表面堆焊耐温、耐蚀合金材料；
2
A manual or automatic, conical needle in a seatvalve that can be changed to alter the amount of fluid flow through it.
在座阀中的一个手动或自动的锥形针状体。对它进行调节就可改变流过的流体的流量。
3
Because the water pressure in spring assembly and valve body makes the conical compression core and seat seal automatically, the flow channel of valve is closed.