The female thread high-pressure ball valve is used in hydraulic mechanical equipment, hydraulic switches, natural gas, etc. 

The high-pressure ball valve came into being in the 1950s. With the rapid development of science and technology and the continuous improvement of production processes and product structures, 

it has rapidly developed into a major type of valve within just 40 years. In industrially developed Western countries, the use of high-pressure ball valves is increasing year by year. 

In China, the KHB female thread high-pressure ball valve is widely used in industries such as petroleum refining, long-distance pipelines, chemical engineering,

 papermaking, pharmaceuticals, water conservancy, power, municipal administration, and steel, playing a crucial role in the national economy.

The female thread high-pressure ball valve is mainly used to cut off or connect the medium in the pipeline, 

and can also be used for the regulation and control of the fluid. Among them, the hard-sealed V-type ball valve has a strong shearing force between 

its V-shaped ball core and the metal seat with surfacing hard alloy, which is particularly suitable for media containing fibers, tiny solid particles, etc. 

The multi-way ball valve can not only flexibly control the confluence, shunt, and flow direction switching of the medium in the pipeline, 

but also close any one channel and connect the other two channels. This type of valve should generally be installed horizontally in the pipeline.

The female thread high-pressure ball valve has an action of rotating 90 degrees, and the plug body is a sphere with a circular through hole or passage passing through its axis. 

The ball valve in the pipeline is mainly used for cutting off, distributing, and changing the flow direction of the medium. 

It can be tightly closed with just a 90-degree rotation operation and a very small turning torque. The ball valve is most suitable for use as a switch and cut-off valve. 

However, recent developments have designed the ball valve to have the function