Ball valves were introduced in the 1950s. The industrial ball valve is a kind of industrial valves. With the rapid development of science and technology, the continuous improvement of production technology and product structure has rapidly developed into a major valve category in just 40 years. In countries with developed industries in the West, the use of ball valves is increasing year by year. Industrial Ball valve is the opening and closing part(ball) driven by the valve stem and rotates around the axis of the industrial valve. It can also be used for fluid regulation and control.
List of content for this article：
j Types of industrial ball valves
k Applications of industrial ball valves
l Tips for selecting the industrial ball valve
Types of industrial ball valves
1. Sort by ball valves style
Floating ball valves
It consists of a valve consisting of a crank arm and a float ball that can be used to automatically control the level of the water tower or pool. The utility model has the advantages of simple maintenance, flexibility and durability, high liquid level control accuracy, water level interference from water pressure, and tight opening and closing without water leakage.
Trunnion Mounted Ball Valve
Fixed ball valve is a new generation of high performance Trunnion ball valve for long-distance pipelines and general industrial pipelines. Its strength, safety and harsh environment are specially designed for various corrosive and non-corrosive media.
V-shaped ball valves
It belongs to the fixed ball valve and is also a single seat sealing ball valve. The adjustment performance is the best in the ball valve. The flow characteristic is equal percentage, and the adjustable ratio is up to 100:1. It has a shearing action between the V-shaped slit and the metal seat, and is especially suitable for media containing fibers, tiny solid particles, and slurry.
Three-way ball valves
It has T and L types. The T-shape enables three orthogonal pipes to communicate with each other and cut off the third channel to function as a split and merge. The L 3-way ball valve type can only connect two pipes that are orthogonal to each other, and can not keep the third pipe connected to each other at the same time, only to distribute.
Sort by ball valves style
2. Sort by ball valves materials
Stainless steel ball valves
It only needs to be rotated 90 degrees and a small turning torque to close tightly. The fully equal valve body cavity provides a small, straight-through flow path for the medium. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal and radioactive media.
Cast steel ball valves
The opening and closing member (sphere) is driven by the valve stem and rotates around the axis of the valve stem. It is mainly used to cut off or turn on the medium in the pipeline, and can also be used for fluid regulation and control. The hard seal V-shaped ball valve has a strong shear between the V-shaped ball core and the metal valve seat of the hardfacing alloy. Shear force, especially suitable for media containing fibers, tiny solid particles.
Forged steel ball valves
The principle of operation is to rotate the valve stem to make the valve clear or occluded. It can be full-bore ball valve, 90°C angle, ball valve switch is light, small in size, can be made into large diameter, reliable in sealing, simple in structure, convenient in maintenance, sealing surface and spherical surface are often closed, not easily eroded by medium, in various industries. Get a wide range of applications.
Pneumatic ball valves
It is a ball valve with a pneumatic actuator
Electric ball valves
It is an important actuator in industrial automation control systems. It is mainly used to cut off or turn on the medium in the pipeline, and can also be used for fluid regulation and control. It is a kind of pipeline pressure component for industrial automation process control.
Welded ball valves
It is widely used in various fields. Its superior quality and high performance stability are beyond the reach of ordinary cast steel ball valves. It is widely used in various pipeline equipment such as urban gas, urban heat supply, petrochemical industry, shipbuilding, steel, pressure regulating station, power plant and so on.
What are the industrial ball valves used for
The industrial ball valves are mainly used to cut off, distribute and change the flow direction of media in pipelines.
It can be used in petroleum, chemical, metallurgical and other sectors, but in the use of flammable, explosive media equipment and pipeline systems, attention should be paid to fire resistance and fire prevention.
It is also commonly used in pipeline systems with double-position adjustment, strict sealing performance, mud, abrasion, shrinkage passage, quick opening and closing action (1/4 turn-on and closing), high pressure cut-off (large pressure difference), low noise, cavitation and gasification, small leakage to the atmosphere, small operating moment and small fluid resistance.
It can also be used in pipeline systems with light structure, low pressure cut-off (low pressure difference) and corrosive media. Ball valves can also be used in cryogenic (cryogenic) devices and pipeline systems.
Industrial Ball Valve Selection Guide
(1) Select according to the maximum nominal pressure. The nominal pressure range of ball valves currently on the market: PN1.0-32.0MPa, choose the appropriate ball valve according to your own needs.
(2) Select according to the maximum nominal diameter. According to the maximum nominal diameter of the ball valve, the diameter of the ball valve is currently 6 ~ 900mm.
(3) Select according to the connection method. Ball valve connections on the market are usually flanged, butt welded, threaded, socket welded, etc. Threaded connections are more common.
(4) Select according to the ambient temperature used. The normal use temperature of the ball valve is -196'C-540C. It is recommended to select the alloy ball valve below zero. It is recommended to select the carbon steel ball valve for higher temperature.
(5) Select according to the driving method. The ball valve drive mode usually has manual, worm gear drive, pneumatic, electric, hydraulic, gas-liquid linkage, electro-hydraulic linkage, etc., according to their own needs.
(6) Select according to the nature of the fluid. Different materials are available. CF8 (304), CF3 (304L), CF8M (316), CF3M (316L) ball valves are suitable for water, steam, oil, nitric acid oxidizing medium, urea and other media.
Industrial ball valves are widely used in petroleum refining, long-distance pipelines, chemical, paper, water conservancy, electric power, municipal, steel and other industries. It is mainly used in the pipeline to cut, distribute and change the flow direction of the medium. It only needs to be rotated 90 degrees and the torque can be closed tightly. Therefore, the application range of it is very wide, and the usage rate of the industrial ball valve is also constantly increasing.