Ceramic Ball Valve

Ceramic ball valves are valves made of high-performance ceramic materials (such as alumina and zirconium oxide) as core components. They can cut off the pipeline medium and control the flow rate by rotating the ball with a through hole.

‌Core components‌:
‌Ceramic ball and valve seat‌: Using precision machining technology, the surface hardness can reach HRA 90 or above, and the wear resistance is far superior to that of metal materials;
‌Valve body‌: Usually carbon steel or stainless steel, lined with ceramic or full ceramic structure, suitable for corrosive media;
‌Drive mode‌: Supports manual, pneumatic or electric (such as imported KNKE brand electric actuator).

Features ‌
‌Wear resistance‌:
The ceramic material has extremely high hardness (Mohs hardness 9), and can withstand erosion by slurry, ash and other particle-containing media, and its service life is 3~5 times longer than that of metal valves;
‌Corrosion resistance‌:
It has strong chemical stability, is resistant to acid, alkali, salt spray and organic solvent corrosion, and is suitable for highly corrosive media (such as nitric acid and hydrofluoric acid);
‌High temperature adaptability‌:
The temperature range is -50℃~450℃, and the high-temperature ceramic ball valve adopts zirconium oxide toughening technology, which has excellent thermal shock resistance;
‌Sealing performance‌:
The leakage rate is ≤ISO 5208 B standard, and the hard sealing structure can adapt to vacuum or high pressure (Class 300~600) working conditions.

 

ceramic ball valve

 

Applications

Chemical industry: Control the flow of corrosive liquids (such as sulfuric acid and chlorine-alkali);
Power industry: High-temperature ash discharge system, resistant to fly ash wear;
Environmental protection industry: Intercept solid-containing media in sewage treatment, anti-clogging design.

Selection and maintenance points
Selection parameters

Material matching: Alumina ceramics are preferred for strong oxidizing media, and zirconia ceramics are preferred for strong reducing media;
Pressure level: Conventional models are suitable for PN16~PN40, and metal hard seal + ceramic coating structure is selected for high pressure requirements;
Drive mode: Electric or pneumatic models are preferred for high-frequency operation scenarios (such as chemical automation production lines).
Maintenance specifications

Avoid violent knocking on ceramic parts during installation to prevent brittle fracture;
Check the wear of the sealing surface every 12 months, and the replacement cycle is 2~3 times that of metal valves.

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