High low temperature super wear-resistant ball valve

The utility model discloses a high low temperature super wear-resistant ball valve, comprising a valve body, a ball body, a valve seat sealing ring, a valve rod whose lower end is connected with the ball body, a filler, a filler press cover, a limiting block and a handle or other driving device connected with the upper end of the valve rod, wherein a pair of arched slots are arranged at the initial opening positions on two ends of the inlet and outlet of the through hole on the ball body respectively. When the high low temperature super wear-resistant ball valve is initially opened and finally closed, an approximate elliptic through hole is formed between the ball body and the valve seat. Compared with the fusiform sharp-angled through hole, the cross section area of the through hole is doubled, the fluid flow rate is reduced and the flow resistance is lessened, so that the high low temperature super wear-resistant ball valve is flexible to open and close; and, the utility model avoids the long fibrous material and granule being easily clamped between the ball body and the sealing surface of the valve seat, solves the damage problem of the sealing surface caused by erosion, oxidation, decrustation, sediment incrustation and strain; moreover, the high low temperature super wear-resistant ball valve can be used as an adjusting valve, which has high adjusting accuracy and can overcome the lopsided moment in the traditional V-shaped adjusting ball valve opening process.