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High pressure ball valve classification and features:
Ball valves are divided into: floating ball valve, fixed ball valve, track ball valve, V-ball valve, three-way ball valve, stainless steel ball valve, forged steel ball valve, ash ball valve, sulfur ball valve, three-way ball valve, pneumatic ball valve, electric ball valve, card sleeve Ball valve, welded ball valve.
High pressure ball valve working principle:
The main characteristics of high-pressure ball valve are its compact structure, reliable sealing, simple structure, convenient maintenance, sealing surface and spherical surface often in the closed state, not easy to be eroded by medium, easy to operate and maintain, suitable for water, solvent, acid and natural gas, etc. Working media, but also for working conditions of poor media, such as oxygen, hydrogen peroxide, methane and ethylene, have been widely used in various industries. The ball valve body can be integral or modular.
The high-pressure ball valve has the action of rotating 90 degrees. The plug body is a sphere, and has a circular through hole or passage through the axis. The ball valve is mainly used in the pipeline to cut off, distribute and change the direction of flow of the medium. It only needs to rotate with 90 degrees of operation and a small rotating torque can close the tight. The ball valve is most suitable for use as a switch or shut-off valve, but recent developments have designed the ball valve so that it has a throttling and control flow, such as a V-ball valve.
High pressure ball valve advantages:
1. The fluid resistance is small, and the full diameter ball valve basically has no flow resistance.
2. Simple structure, small size, light weight.
3. Close and reliable. It has two sealing surfaces, and the current ball valve sealing surface material uses a wide range of plastics, good sealing, can achieve a complete seal. It has also been widely used in vacuum systems.
4. Easy to operate, fast opening and closing, as long as the rotation from 90 degrees from full open to fully closed, easy remote control.
5. Easy maintenance, ball valve structure is simple, the seal ring is generally active, removal and replacement are more convenient.
6. When fully open or fully closed, the sealing surfaces of the ball body and the valve seat are isolated from the medium. When the medium passes through, the sealing surface of the valve will not be eroded.
7. Wide range of applications, from small to several millimeters in diameter, up to a few meters in height, from high vacuum to high pressure can be applied.
8. Since the ball valve has wiping during opening and closing, it can be used in media with suspended solid particles.
Classified by shell/body material, ball valves can be divided into:
1. Metal material valves: such as carbon steel valves, alloy steel valves, stainless steel valves, cast iron valves, titanium alloy valves, Monel valves, copper alloy valves, aluminum alloy valves, lead alloy valves, etc.
2. Metal valve body lining valves: such as rubber-lined valves, fluorine-lined valves, lined lead valves, lined plastic valves, lined enamel valves.
3. Non-metallic valve: such as ceramic valves, glass valves, plastic valves.
There are many domestic manufacturers of ball valves, and most of the connection sizes are not uniform. Mainly divided into the following categories:
(1) A general class based on JB/T2203-1999 Ball Valve Structure Length. At present, most domestic ball valve manufacturers are designed and produced according to this standard. However, this standard is not perfect, and the specifications are incomplete. The maximum nominal diameter of floating ball valve is DN1200, and the maximum nominal diameter of fixed ball valve is DN2000. According to the specifications of the three precision valves and the available data, the nominal diameter of the floating ball valve is currently at least DN6, and the nominal diameter of the fixed ball valve is at least DN50. After research, the connection size of each manufacturer is not uniform, in order to have a unified standard, users in the selection and installation of the same specifications can be exchanged, it is recommended that the National General Machinery Research Institute of JB/T2203-1999 "ball valve structure length" revision .
High pressure ball valve working principle
The high-pressure ball valve has an action of rotating 90 degrees. The plug body is a sphere and has a circular through hole or a passage through its axis. The ball valve is mainly used in the pipeline to cut off, distribute and change the direction of flow of the medium. It only needs to rotate with 90 degrees of operation and a small rotating torque can close the tight. The ball valve is most suitable for use as a switch or shut-off valve, but recent developments have designed the ball valve so that it has a throttling and control flow, such as a V-ball valve.