The valve ball of the valve fitting is mainly made by rotating the ball to make the valve unblocked or occluded. The ball valve switch is light in weight, small in size, can be made into a large diameter, reliable in sealing, simple in structure, convenient in maintenance, and the sealing surface and the spherical surface are often closed, and is not easily eroded by the medium, and is widely used in various industries.
At present, the product includes many different types, and its application range is very wide, especially in the petroleum, chemical, metallurgical and other departments, the use of soft-sealed ball valves in flammable and explosive media equipment and piping systems, Pay attention to fire and fire. So, what should be considered in the process of valve sphere selection for valve fittings?
In general, if it is required to have adjustment performance, it is recommended to select a ball valve of a valve fitting with a special structure with a V-shaped opening. In petroleum, petrochemical, chemical, electric power, urban construction, metal-to-metal sealed ball valves are available for piping systems with operating temperatures above 200 °C. In the oxygen pipeline system of the metallurgical industry, a ball valve that has been strictly degreased is used.http://www.dmgcastings.com/