Type: V-type ceramic regulating ball valve
Specifications: DN15-DN200 (1/2"-8")
Pressure class: PN10-PN16 (CL150)
Body Material: A105, F304, F316, F304L, F316L
Internal material: zirconia, 99% alumina, silicon nitride, tungsten steel
Connection end: flange
Application areas: thermal power, steel mills, metallurgy, mining, paper, petrochemical, coal chemical, polysilicon, etc.
After cold isostatic pressing and high temperature sintering alumina ceramics (>99%Al2O3), zirconia ceramics (ZrO2), silicon nitride ceramics (Si3N4), pressureless sintered silicon carbide ceramics (SSiC) and most organic Solvents and inorganic chemical media do not react chemically (except for hydrofluoric acid) and therefore do not contaminate the media. Monolithic sintered tungsten carbide ceramics (STC) have good mechanical properties and thermal shock resistance, and are suitable for high wear conditions under high temperature and high pressure. The excellent chemical stability of structural ceramic materials ensures that the physical and chemical properties of the ceramic ball valve will hardly change after long-term use in highly corrosive media such as strong acids and alkalis.
For most ball control valves and V-type regulating ball valves, the flow rate of the medium reaches the maximum value when the valve is small in opening. In this case, the high-speed fluid will affect the valve core, valve ball, valve seat and valve body. Causes erosion and wear. If the medium contains solid particles, such as a ceramic ball valve for desulfurization regulation in thermal power plants, this wear will be more serious.
Many valve manufacturers and technicians have spent a lot of time and energy to improve the valve's wear resistance and erosion resistance by improving the valve structure, but the results are not satisfactory. Especially when the medium has both high corrosion and high wear, there is no other way but to choose more suitable materials to meet the requirements of wear and corrosion resistance.
Advanced structural ceramic materials, including high-purity alumina ceramics, zirconia ceramics, tungsten carbide (tungsten carbide), silicon nitride, etc., can provide fundamental solutions for various high corrosion and high wear conditions, V-type ceramics Ball valves can meet the stringent requirements of various high corrosion and high wear conditions.
The ceramic ball valve contains two different opening ball structures, O-type and V-type.
In general, O-type valve balls are mainly used for shut-off valves; V-type valve balls are mainly used for flow control valves. The valve ball with V-shaped opening has the characteristics of equal percentage flow regulation, and the regulation performance is stable when the opening is small, which is suitable for occasions where the accuracy and stability of flow regulation are high; at the same time, the V-shaped valve ball can cut off particles in the medium, Impurities such as fibers have the self-cleaning function of the sealing surface. O-type ceramic ball valves can also be used as flow control valves in occasions where the accuracy of flow regulation is not high.
Compared with ordinary metal hard seal and soft seal valves, V-type ceramic ball valves have better performance in various harsh working conditions.
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