- Floating Ball Valve: The ball of the ball valve is held by the two valve seats and is 'floating state'. Under the action of medium pressure, the ball can produce a certain displacement and tightly pressed on the sealing surface of the outlet end. This valve structure is simple, good sealing, by the two seat sealing ring preload and media pressure will be tightly pressed on the ball at the outlet end of the seat sealing ring, so as to ensure that the valve is completely sealed. This ball valve is a one-sided forced seal. Floating ball valve is generally used for low pressure ball valve.
- Fixed ball valve: fixed ball valve ball on the upper and lower shaft is equipped with bearings, the ball can rotate freely along the axis perpendicular to the valve channel, pressure does not produce movement. Compared with the floating ball valve, fixed ball valve work, the fluid pressure in front of the valve on the ball to produce the force all transferred to the bearings, will not make the ball to the seat to move, so the seat will not be subjected to excessive pressure, so the fixed ball valve torque is small, the seat deformation is small, stable sealing performance, long service life, suitable for high-pressure, large-diameter occasions.
- Orbital ball valve: orbital ball valve is a new type of valve widely used in recent years. Orbital ball valves and gate valves belong to the same type of valve, mainly relying on the rotary valve plug to make the valve open or close. In the pipeline is mainly used to do cut off, distribution and change the direction of flow of media. According to the structure form, orbital ball valve can be divided into floating ball valve, fixed ball valve and elastic ball valve.
