Knife Gate Valve ( DN50 to DN1200 )

Body Material: Ductile iron, also known as nodular cast iron, is commonly used for the body of the knife gate valve. Ductile iron provides strength, durability, and corrosion resistance, making it suitable for handling challenging fluids. 

Knife Gate Design: The valve features a blade or gate that can cut through the fluid flow, hence the term "knife gate." The gate is usually a sharp-edged, rectangular or circular plate that moves perpendicular to the flow direction for effective shut-off. 

Unidirectional or Bidirectional Flow: Knife gate valves can be designed for unidirectional or bidirectional flow, depending on the application. 

Metal-to-Metal or Soft Seals: The knife gate valve may have metal-to-metal seals or soft seals, such as rubber or elastomers, to provide a tight shut-off and prevent leakage. 

Manual or Actuated: Ductile iron knife gate valves can be operated manually using a handwheel or actuated with electric, pneumatic, or hydraulic actuators for remote control. 

Flanged or Wafer Ends: Knife gate valves are available in different connection types, including flanged ends or wafer ends. The choice depends on the installation requirements and pipeline design. 

Wastewater Treatment: Knife gate valves are commonly used in wastewater treatment plants for slurry and sludge handling. 

Pulp and Paper Industry: They find applications in the pulp and paper industry for handling pulp and other fibrous materials. 

Mining and Mineral Processing: Knife gate valves are suitable for mining applications, especially for handling abrasive slurries. 

Varied Sizes: Ductile iron knife gate valves come in various sizes to accommodate different pipeline diameters and flow rates. 

API, ANSI, or DIN Standards: Ductile iron knife gate valves may comply with industry standards such as those set by the American Petroleum Institute (API), American National Standards Institute (ANSI), or Deutsches Institut für Normung (DIN).