Ceramic knife gate valve

CERATIC KNIFE TYPE GATE VALVE is an industrial valve designed specifically for high wear and corrosive media. Its core feature is the use of toughened engineering ceramics as key components, combined with a blade gate structure to achieve efficient cutting and sealing. The following is a comprehensive technical analysis:

1、 Structure and Working Principle
Core components
Gate design: The blade shaped gate moves along the vertical fluid direction and cuts off the medium (such as slurry and ash) through shear action. The valve body adopts a chamber free design to avoid material accumulation.
Sealing system: The O-shaped ceramic sealing valve seat achieves bidirectional sealing, and some models are equipped with protective lip technology to prevent ceramic ring rupture.
Drive mode
Supports manual, electric, pneumatic (0.4-0.6MPa gas source) and hydraulic, with electric models capable of remote opening control with a precision of 1.0mm.
2、 Performance characteristics
Wear resistance: The hardness of the ceramic sealing surface reaches HRA88 or above, and the service life is 10 times that of ordinary valves.
Corrosion resistance: Suitable for strong corrosive media such as acid, alkali, salt, etc., such as slurry transportation in the chemical industry.
High temperature resistance: The working temperature range is -20 ℃~+650 ℃, and the hard seal model can be extended to 900 ℃.
Lightweight: The ultra short structural design reduces the weight of the carbon steel valve body by 20% -30% and supports multi angle installation.
3、 Technical parameters
Diameter range: DN50-DN1200 (some models support larger diameters).
Pressure rating: PN0.6~PN2.5 (national standard), ANSI 150LB (American standard).
Applicable media: Solid liquid gas mixture media such as coal slag, pulp, slurry, ash residue, etc.
4、 Typical application areas
Electricity/Mining: Ash removal system and slurry transportation in thermal power plants.
Chemical/Environmental Protection: Corrosive slurries, wastewater treatment.
Paper/food: high concentration pulp, sterile medium.

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