Pneumatic Ceramic Double Gate Valve

Our Pneumatic Ceramic Double Gate Valve, also known as Pneumatic Ceramic Double Disc Gate Valve, is a specialized industrial valve designed for on-off and flow control of abrasive, corrosive, and solid-containing media. Adopting a double gate structure with spring preload and high-performance engineering ceramic sealing components, the valve achieves bidirectional tight sealing and excellent wear resistance far exceeding traditional metal valves. The pneumatic actuation system enables fast, stable, and automatic operation, which is perfectly compatible with automated pipeline systems, reducing manual intervention and improving operational safety.

With strict compliance with international standards such as ASME B16.34, API 598, and GB/T 13927, our valve undergoes rigorous pressure testing and quality inspection to ensure reliable performance in extreme industrial environments. Whether it is dry ash conveying in power plants, slurry transport in mines, or corrosive fluid control in chemical plants, this valve can maintain long-term stable operation, bringing tangible economic benefits to your projects.

1.Superior Wear Resistance with Ceramic Technology : The gate and sealing components are made of high-quality engineering ceramics (alumina Al₂O₃ or zirconia ZrO₂ as the main material), with a hardness of ≥HRC 85, which is far superior to metal materials in wear resistance. In scenarios with abrasive media such as fly ash, mineral slurry, and cement ash, the ceramic sealing surface can effectively resist particle erosion, avoiding seal failure caused by medium scouring, and extending the service life to 5-10 times that of traditional metal valves.

2.Double Gate Bidirectional Sealing : The unique double gate structure with spring preload realizes reliable bidirectional sealing, ensuring zero leakage even under low-pressure conditions. During the opening and closing process, the gate rotates automatically, generating a grinding and polishing effect on the sealing surface, which can self-compensate for slight wear and maintain long-term sealing performance, effectively preventing medium backflow and pipeline pollution.

3.Efficient Pneumatic Actuation : Equipped with a high-torque push-rod type straight-cylinder pneumatic actuator, the valve features fast opening and closing speed, stable operation, and strong adaptability to harsh working conditions. The actuator supports remote control and can be equipped with a limit switch to achieve accurate position control, easily integrating into automated production lines and reducing manual operation intensity.

4.Robust & Durable Structure : The valve body is made of high-quality cast steel (WCB as standard; optional 304/316 stainless steel for enhanced corrosion resistance), providing excellent structural strength to withstand pipeline pressure and external mechanical impacts. The three-piece body design is easy to assemble and maintain, and the valve body is equipped with a slag discharge port (optional) for regular ash blowing, avoiding ash accumulation and gate jamming.

5.Wide Adaptability & Customization : The valve is available in a wide range of specifications, with nominal diameter from DN25 to DN400 (1" to 16") and nominal pressure from PN10 to PN40 (Class 150 to Class 300), suitable for different pipeline systems. The applicable temperature ranges from -29℃ to 450℃ (special high-temperature design available), and it can adapt to various media such as dry ash, slurry, cement ash, powder, and corrosive fluids, meeting the needs of different industrial scenarios. Customized structural length, connection size, and material configuration are also available according to customer requirements.

6.Cost-Effective & Low Maintenance : Thanks to the excellent wear resistance and corrosion resistance of ceramic materials, the valve has a long service life, reducing the frequency of valve replacement and maintenance workload. Compared with traditional metal valves, it can save more than 50% of annual maintenance costs, and the stable operation ensures minimal production downtime, maximizing your production benefits.

- Power Generation Industry : Ideal for dry ash systems in thermal power plants, including silo pump discharge, ash unloading, pipeline switching, and fly ash conveying. It can effectively prevent ash backflow and cylinder ash accumulation, ensuring the stable operation of the ash removal system.

- Mining & Metallurgy Industry : Suitable for mineral slurry transport, tailings discharge, and dry powder material selection and conveying. The wear-resistant ceramic structure can withstand the erosion of high-concentration, large-particle mineral slurry, maintaining long-term sealing performance without jamming.

- Chemical Industry : Used for conveying corrosive media such as acid, alkali, and chemical slurry. The optional stainless steel valve body and ceramic sealing components have excellent corrosion resistance, avoiding valve damage caused by corrosive media and ensuring production safety.

- Cement & Building Materials Industry : Applicable to dry powder conveying and discharge in cement plants, such as cement ash, limestone powder, and gypsum powder. The self-cleaning gate design avoids ash accumulation, ensuring smooth operation of the pipeline system.

- Other Industries : Also used in food and pharmaceutical industries (meeting FDA standards with 316L stainless steel and ceramic components), paper and pulp industry, and environmental protection projects (sewage treatment, fly ash discharge), providing reliable valve solutions for various harsh working conditions.

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