Top Entry Ball Valve, also known as top mounted ball valve, has a simple structure and sealing method that allows it to replace gate valve. The valve structure adopts a top mounted straight through full diameter, with no flow resistance in the straight flow channel, low flow resistance coefficient, small water loss, and the valve sealing surface is not flushed. When opened and closed, the ball core and seal are not flushed, which meets the needs of different occasions. Long service life. Mainly used in industries such as petroleum, chemical, power, and metallurgy.