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Where Are Brass Ball Valves Used?

The ball valve came out in the 1950s. With the rapid development of science and technology and the continuous improvement of production technology and product structure, it has rapidly developed into a major valve type in just 50 years. In developed western countries, the use of ball valves is increasing year by year.

1. The role of brass ball valve

The OEM brass valve is mainly used to cut off, distribute and change the flow direction of the medium in the pipeline. It only needs to be rotated 90 degrees and a small torque can be closed tightly. Ball valves are most suitable for switching and shut-off valves.

Since the brass ball valve usually uses rubber, nylon and PTFE as the material of the seat seal, its operating temperature is limited by the material of the seat seal.

The cut-off function of the ball valve is accomplished by pressing the metal ball against the plastic valve seat under the action of the medium (floating ball valve). Under the action of a certain contact pressure, the valve seat sealing ring undergoes elastic-plastic deformation in local areas. This deformation can compensate for the manufacturing accuracy and surface roughness of the sphere and ensure the sealing performance of the ball valve.

And because the valve seat sealing ring of the ball valve is usually made of plastic, when choosing the structure and performance of the ball brass valve, the fire resistance and fire resistance of the ball valve should be considered, especially in the petroleum, chemical, metallurgical and other departments, in the flammable, easy to When ball valves are used in equipment and pipeline systems for explosive media, more attention should be paid to fire resistance and fire protection.

2. Applicable occasions of brass ball valve

The many unique characteristics of ball valves determine that the use of ball valves is relatively wide. Usually, in two-position adjustment, strict sealing performance, mud, wear, shrinking channels, rapid opening and closing actions (1/4 turn opening and closing), high pressure cut-off ( Ball valves are recommended for pipeline systems with large pressure difference), low noise, cavitation and gasification, a small amount of leakage to the atmosphere, small operating torque, and small fluid resistance.

Ball valves produced by brass valve factory are also suitable for pipeline systems with light structure, low pressure cut-off (small pressure difference) and corrosive media. Ball valves can also be used in cryogenic (cryogenic) installations and piping systems.

In the oxygen pipeline system in the metallurgical industry, ball valves that have undergone strict degreasing treatment are required. When the main lines in oil pipelines and gas pipelines need to be buried underground, full-bore welded ball valves are required. When the adjustment performance is required, a brass ball valve with a special structure with a V-shaped opening should be selected.

In petroleum, petrochemical, chemical, electric power, and urban construction, metal-sealed ball valves can be selected for pipeline systems with a working temperature above 200 °C.