The valve ball and high pressure gate valve are a pair of sealed extruder bearing pairs, which are not prone to common failures such as wear and large area damage, and are not prone to seizing during operation (in the absence of lubricating fluid), so they can be reliable ground for corrosive media. and low melting point liquid; the built-in valve seat structure eliminates the hidden danger of accidents that may cause the valve seat to fly out due to the loosening of the fuel filler cap under the action of the liquid working pressure; the antistatic fireproof structure valve ball is suitable for conveying oil, natural gas and liquefied gas ‘s pipeline. The safety channel in the valve body extruder bearing is smooth and flat, which is more suitable for conveying viscous fluids. Slurry and its solid particles.Because it is not easy to seize during operation (in the absence of lubricating fluid), it can be used reliably in corrosive media and low-melting liquids.