Sanitary Ball Valve and flange gate valve are valves of the same type, the difference is that its closing part is a sphere, which rotates around the center line of the valve body to achieve opening and closing. Ball valves are mainly used to cut off, distribute and change the flow direction of the medium in the pipeline.

High platform ball valve is a relatively new type of ball valve. It has some unique features of its own structure, such as no friction when switching, the seal is not easy to wear, and the opening and closing torque is small. This can reduce the specifications of the actuator. Equipped with a multi-turn electric actuator, it can achieve the adjustment and strict shutoff of the medium. It is widely used in working conditions that require strict shutoff, such as petroleum, chemical industry, urban water supply and drainage.

The ball support methods of high platform ball valves are mainly fixed and floating. The characteristics of these two ball support methods are introduced below:

1. Fixed ball valve: more suitable for high pressure or large diameter applications. Because the ball is small, the valve seat deformation is small, the sealing performance is stable, and the service life is extended. The ball of the fixed ball valve is connected to the upper and lower valve stems, and can rotate freely along the axis perpendicular to the valve channel, and cannot move along the channel axis.
2. Floating ball valve: The valve stem is movably connected to the ball, and the ball has no supporting shaft. Since the ball valve in and out of the ball valve is supported by the valve seat, the ball of the floating ball valve remains straight at both ends and is in a floating state.

How is the sealing effect of the high platform ball valve?

Sealing is very important for high platform ball valves and various valves. The sealing performance affects the effect during use. Here is a share of the sealing performance of the high platform ball valve:

The selection and shape of the high platform ball valve are two important factors affecting its air tightness.

1. The typical pre-tightening pressure value of the sealing plate is about 0.1, 1.02 and above of the nominal pressure. The adjustment of the pre-tightening pressure value of the sealing plate depends on the thickness of the sealing gasket. The sealing performance is related to the gasket thickness error and should be adjusted appropriately. For use.

2. The sealing performance of the ball valve is related to the structure. Different structures have different sealing effects. Only by selecting suitable sealing materials and reasonable structural design can the ball valve provide excellent sealing performance.