The ball valve was invented in the 1950s. It is also one of the fastest-growing valves in recent years, especially in the USA, Germany, Japan, France, Italy, Spain and the UK where the ball valves are widely used.
The type and amount of ball valves are still increasing in speed, and engineering development began to move towards the application of high temperature, high pressure, large port, secure sealing, longer duration, major adjustments, and multiple functions.
Ball valves are widely used in aerospace, petrochemical, pipelines, food and beverage, and construction. Some of the main features of the ball valve explained here:
- Low Flow Resistance
Part of the ball valve can be divided into the full and reduced port harbor. The inner diameter of the full-port ball valve is equal to the diameter of the pipe makes partial resistance equal to pipe friction resistance. Therefore, a full-port ball valve has a low flow resistance in comparison with other types.
- Fast and Easy Open and Close
It handles the 90-degree easier and faster to open and close. In some cases, it only takes as little as 0.05 ~ 0.1 seconds to complete the action. So it is better in the automation system.
- Great Sealing
Currently, most of the sealing element is made of a flexible material such as Polytetrafluoroethylene, PTFE. Sealing elements combined with metallic and non-metallic materials called soft sealing. In general, the effectiveness of sealing a gentle breeze to guarantee, and require precision low engine and a rough surface.
- Length Again
Features of PTFE self-lubrication to reduce friction between the sealing element and ball. In addition, the increased skill rough surfaces degrade the ball machine, increasing the lifespan.
The smooth surface facilitates transport from the sticky fluid, serous fluid and particles.
It can work smoothly without applying a lubricant that is ideal for handling corrosive media and low-boiling point liquids.
Under conditions of high pressure and temperature, can perform bi-directional sealing.
The sealing elements in the body and the seat can be completely separate media that can prevent erosion.