Ceramic ball valve, Ceramic Lined Composite Ball Valves, Alumina Ceramic Ball Valve

Product Description

Our ceramic ball valve is a next-generation zero-leakage valve featuring a metal body integrally sintered with a 99% high-purity alumina ceramic flow channel and ball core. The valve ball, seat, and cavity are all lined with ceramic, completely isolating the media from the metal. This eliminates the erosion, corrosion, sticking, and leakage issues that plague traditional metal valves in extreme operating conditions, such as coal slurry, ore slurry, fly ash, and acid and alkali environments. With nominal diameters ranging from DN15 to DN600, pressure ratings from PN10 to PN160, and operating temperatures from -40°C to 450°C, it offers a competitive alternative to imported brands and is widely used in thermal power plant ash removal, cement pulverized coal, chemical slurries, and mine tailings systems.

Product Features:

Fully ceramic flow path: Ball roundness ≤ 0.01 mm, surface Ra ≤ 0.2 μm, 30% lower torque.
Zero leakage: Bidirectional sealing meets ISO 5208 Class A and Class VI bubble-proof seal.
Extremely wear-resistant: Alumina ≥ HRA88, with a service life 8-12 times that of Cr-Mo steel valves.
Severe corrosion resistance: Resistant to all acids, bases, and salts with a pH range of 1-14, except hydrofluoric acid.
Anti-seizure: Valve seat elastic compensation and self-lubricating ceramic coating ensure torque degradation of less than 5% after 50,000 cycles.

Main Structural Components
Valve Body: Typically cast or forged from metal materials such as carbon steel, stainless steel, or alloy steel, it provides structural support and a pressure barrier. The internal flow path may be designed to minimize dead space and facilitate particle passage.

Ball: The core valve opening and closing component, precision-machined from high-purity, high-density, and high-toughness engineering ceramics (zirconia or alumina). Its surface is highly polished to a mirror-like finish.

Valve Seat:
Full Ceramic Seat: Made from the same or compatible ceramic material as the ball, this seat forms a ceramic-to-ceramic hard seal. It offers excellent wear and corrosion resistance, suitable for the most demanding operating conditions.

Non-Metallic Seat: Made from high-performance polymers such as PEEK (polyetheretherketone) and RPTFE (reinforced polytetrafluoroethylene). It provides excellent sealing and a degree of elastic compensation, suitable for operating conditions with high corrosiveness but moderate wear and moderate temperatures.

Metal Seat: Less common, typically used in extremely high-temperature applications or for special requirements.

Valve Stem: The component that connects the actuator (handle, worm gear, pneumatic head, electric head) to the ball. It's typically made of high-strength stainless steel (such as 17-4PH, 316SS) or alloy steel, and may be surface-hardened. The connection between the stem and ball requires special design to prevent loosening and leakage (such as blowout prevention).

Packing/Seal: Where the stem passes through the bonnet, packing (such as graphite rings, PTFE V-rings, spring-loaded packing) or O-rings are used to prevent media from escaping along the stem.

Actuator: A manual (handle, worm gear), pneumatic, electric, or hydraulic device that rotates the valve stem 90 degrees to open or close the valve.

Comparison Table of Core Differences Between Ceramic Ball Valves and Stainless Steel Ball Valves

Product Advantages
Reduce operating costs by 70%: Maintenance-free cycle ≥ 3 years, reducing downtime and maintenance.
Lighter by 25%: Lighter than similar-sized metal-sealed ball valves, making them easier to support in pipes.
Interchangeable design: Flange spacing complies with ISO 5752/GB/T 12237, allowing for direct replacement of older valves.

Export markets: Russia, Indonesia, Turkey, Brazil, South Africa, Chile, Vietnam, South Korea, Germany, and other countries.

Typical Applications
Thermal Power: Pneumatic Ash Removal, Limestone Slurry, and Desulfurization Wastewater.
Cement: Pulverized Coal Transportation, High-Temperature Kiln Flue Gas, and Clinker Dust.
Chemical Industry: Phosphoric Acid, Sulfuric Acid, Caustic Soda, and Chloride Slurries.
Mining: Copper Tailings, Iron Ore Concentrate, and Highly Abrasive Phosphogypsum Slurries.
Smelting: Converter Gas Scrubbing and Aluminum Smelter Red Mud.

Packaging and Shipping
Individual bubble bags and shockproof foam boxes, one valve per box.
Wooden pallets and stretch film, suitable for FCL/LCL containers.
Sea freight label: English shipping mark and center of gravity mark.
Fumigation-free plywood boxes are available, compliant with ISPM-15 export standards.

FAQ

Q1: Is ceramic fragile?
A: The ball core is made of toughened alumina and isostatically pressed, with an impact toughness of >4 MPa·m1/2, and can withstand a water pressure shock of 1.5 times the PN.

Q2: Can it be used with electric or pneumatic actuators?
A: It comes standard with an ISO 5211 high platform and can directly accommodate electric, pneumatic, and hydraulic actuators. Explosion-proof CT4 and IP68 options are also available.

Q3: What is the delivery time?
A: Standard sizes from DN500 to DN200 are in stock and shipped within 3 days. Custom sizes can be shipped within 2-4 weeks.