Why Choose a Fujikin Ceramic Valve?
Due to the advanced properties of the technical ceramics used, Fujikin Ceramic Valves offer significant advantages over standard material valves. Fujikin valves are manufactured using solid 99.5% high-purity alumina ceramic, guaranteeing a valve that is superior in all respects, including resistance to:
 Corrosion. 99.5% alumina ceramic is virtually inert to
almost all organic and inorganic chemicals. They do
not interact with, nor contaminate the process media.
They are physically and chemically stable against
most acids and alkalis and offer years of service with
little or no corrosive degradation.
Abrasion. 99.5% alumina ceramic is 43% harder than zirconia, 140% harder than
porcelain and 730% harder than stainless steel, an indication of the long-term
wear-resistance properties of our valve materials.
Cavitation. Even severe, continuous cavitation will not degrade or damage our
ceramic valve components. Therefore, Fujikin ceramic valves may be used in
cavitating or high differential-pressure applications with little or no harmful
effects.
Wide Selection of Trims. Each valve size offers a variety of control and round-
ported valve trims. This assures highly accurate, tailored flow control as well as
minimizing seat and pipe abrasion due to oversized trims.
Cost Advantages
Your initial investment cost in Fujikin valves is small indeed when you take into account the significant long-term benefits they provide. All wetted parts are made of solid ceramic; they are not just ceramically coated or lined.
So Fujikin valves provide...
Long Service Life in severe applications as a result of their superior resistance
to corrosion, abrasion and erosion.
Increased Production Efficiency - because they substantially reduce downtime.
Easier Maintenance - thanks to simplified, field-repairable design; replacement
parts are interchangeable.
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 About Fujikin Ceramic Materials
Characteristics: To meet the stringent requirements mandated by the needs of modern industry, Fujikin Ball Valves are manufactured utilizing a wide variety of ceramic materials -- with each possessing unique characteristics. Alumina ceramics are by far the most commonly used ceramic materials and are commercially available in varying purities -- from a porous 76% refractory material to an inert 99.9% grade. Although low-purity alumina is a relatively low cost alternative, important properties such as hardness and corrosion-resistance are drastically reduced when comparing higher alumina-content grades to other ceramics. Zirconia, silicon carbide and silicon nitride each possess a variety of unique characteristics and are all available for use in Fujikin Ceramic Valves.
99.5% Alumina. 99.5% alumina is the standard ceramic material utilized in all Fujikin ceramic valves. In addition to its extreme corrosion resistance and high hardness factor, alumina is also not subject to radioactive degradation, making it an ideal material for a wide variety of aggressive applications. It remains stable at extremely high temperatures and may even be used for services exceeding 1,000°F.
99.9% Alumina. This high-grade alumina is one of the purest forms of alumina available. It has a finer particle size, is more homogenous and has less binding material than the 99.5% alumina. As a result, the corrosion and abrasion resistance properties are dramatically increased, making this ceramic an ideal choice for the most severe services, while still maintaining a low purchase cost.
Silicon Nitride. Silicon nitride exceeds other ceramics with a remarkably high thermal shock resistance and high strength properties at elevated temperatures. Originally developed for components in internal combustion engines, turbines and diesel glow plugs, it is also available as an optional ceramic material in Fujikin valves. It is so stable at high temperatures that it can be used with molten metals.
Silicon Carbide. Silicon carbide is only next to diamond and boron carbide in hardness and 95% harder than our standard alumina. It exhibits high thermal conductivity, high thermal-shock resistance and strength durability at extreme temperatures. Silicon carbide has the highest corrosion resistance of all fine ceramic materials and is also one of the few that is resistant to HF, making this material the ceramic of last resort.
Zirconia. Zirconia has the highest strength and toughness at room temperature of all engineered ceramics. However, zirconia is less corrosion resistant and more susceptible to impingement and rubbing wear and is therefore used primarily for high torque and/or high pressure applications.
Hardness Factor
This table demonstrates the relative hardness of Fujikin valve material |
Cost Advantages
Your initial investment cost in Fujikin valves is small indeed when you take into account the significant long-term benefits they provide. All wetted parts are made of solid ceramic; they are not just ceramically coated or lined.
So Fujikin valves provide...
Long Service Life in severe applications as a result of their superior resistance
to corrosion, abrasion and erosion.
Increased Production Efficiency - because they substantially reduce downtime.
Easier Maintenance - thanks to simplified, field-repairable design; replacement
parts are interchangeable.
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