About The Elasticity Of The Ball Valve

- Mar 15, 2019-

The ball of the ball valve is elastic. Both the ball and the seat seal are made of metal material, and the sealing pressure is very large. The pressure of the medium itself cannot meet the sealing requirements, and an external force must be applied. This valve is suitable for high temperature and high pressure media.


The elastic sphere is made by opening an elastic groove at the lower end of the inner wall of the sphere to obtain elasticity. When the passage is closed, the wedge of the valve stem is used to open the ball and press against the seat to seal. Before the ball is rotated, the wedge head is loosened, and the ball is restored to its original shape, so that a small gap occurs between the ball and the valve seat, which can reduce the friction and operating torque of the sealing surface.


The Qv347, Qv647, and Qv947 V-type regulating ball valves have a shearing effect on the valve seat due to the V-shaped structure of the ball. Therefore, it is suitable for the control of relevant process parameters in suspension media containing fibers or tiny solid particles in industrial enterprises such as paper making, chemical industry, metallurgy, etc. It is especially suitable for pulp, white water, black liquor and white in pulp and paper production process. Automatic adjustment of fluids such as liquid suspended particles and concentrated, turbid slurry fluid medium.


This V-type ball valve is a fixed ball valve and a single-seat ball valve. The adjustment performance is the best in the ball valve. The flow characteristics are equal percentages, and the adjustable ratio is 100:1. It has a shearing action between the V-shaped slit and the metal seat, especially suitable for media containing fibers, tiny solid particles, slurry, etc.