Manual vacuum ball valve applying internal and external spraying process

The manual vacuum ball valve comprises a valve body and a ball body arranged in the valve body, the ball body corresponds to a valve rod, the top end of the valve rod penetrates out of the valve body, a rotating disc for driving the valve rod to rotate is arranged at the position, penetrating out of the valve body, of the valve rod, an inserting hole is formed in the peripheral wall of the rotating disc, and the rotating disc is matched with a handle. The top of the valve body is provided with an opening, the valve rod is located in the opening, a gap is reserved between the outer wall of the valve rod and the inner wall of the opening, the valve rod is sleeved with a valve sleeve, and the bottom end and the top end of the valve sleeve are each provided with at least one sealing ring to fill the gap. The valve rod is further sleeved with a valve cover, the valve cover is located at the top end of the opening to seal the gap, the contact face of the ball body and the valve body is coated with polytetrafluoroet