The DN800 WCB Flange Knife Gate Valve is a high-performance isolation valve designed for industrial pipeline systems. Featuring a flanged connection structure, it is suitable for medium cut-off control in large-diameter, high-pressure applications. The valve body is constructed from WCB cast steel, offering excellent mechanical strength and impact resistance, ensuring long-term stable operation under high-temperature, high-pressure, and corrosive environments.

The valve employs a knife-shaped gate design, providing strong cutting capability, reliable sealing, and minimal flow resistance. It is particularly well-suited for pipeline systems handling media containing solids, slurries, or viscous fluids. With its compact structure and smooth operation, it is ideal for applications requiring tight shut-off and frequent cycling.

What are the characteristics and biggest advantages of flange knife gate valve?

High-Strength Material Options
Available in stainless steel (SS304/SS316), cast steel (WCB), and other materials to suit various media and environmental conditions. Stainless steel offers superior corrosion resistance for chemical and sanitary applications, while cast steel provides high strength and pressure resistance for demanding industrial use.

Wide Pressure and Diameter Compatibility
Supports multiple international pressure standards (PN10/PN16, CL150, JIS 5K/10K) and covers a diameter range from DN300 to DN3200, meeting diverse requirements from standard to large-scale industrial piping systems.

Excellent Sealing and Structural Stability
Precision-machined flange sealing surfaces ensure leak-free connections. The optimized structural design withstands system pressure fluctuations and external loads, maintaining long-term shape stability and leak resistance.

Outstanding High-Temperature and Corrosion Resistance
Suitable for water, steam, oil, and other media. The material and manufacturing process effectively resist erosion in high-temperature steam lines and corrosive fluid transport, extending service life.

Easy Installation and Low Maintenance
The flanged connection requires no special tools, enabling fast assembly and disassembly to minimize downtime. With long operational life and minimal need for replacement under normal conditions, it significantly reduces overall maintenance costs.

Application conditions of knife gate valve:

Chemical and Power Industries: Used for isolation in boiler blowdown, ash handling, flue gas treatment systems, and other high-temperature, high-pressure applications.

Paper and Textile Industries: Suitable for pipelines handling media containing solid particles, such as pulp, dyes, and wastewater, offering excellent shut-off performance.

Food and Pharmaceutical Sectors: Applicable in non-sanitary auxiliary systems (e.g., steam and cooling water pipelines) for flow control.

Water Treatment and Mining/Metallurgy: Used for on/off and regulation in large-diameter pipeline systems handling raw water, slurry, sludge, and similar media.

Note:
The valve is available in other materials (e.g., stainless steel) upon request and can be equipped with actuators for automated control.