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Hard-hitting rotary ball valve has the advantages of short valve, light weight, reducing the owner's engineering cost, and the most prominent advantages are small operating torque, easy switching and hard sealing, and long service life. Its structure adopts the principle of partial clamping, and the purpose of pre-tightening closure is achieved through the rotating mechanism.Meet the needs of different occasions, the valve core of the sealing pair can compensate, and when the valve seat is closed after wear, it can still be reliably sealed after a little rotation, prolonging the service life, and is suitable for design institutes and users' preferred products.