Non-Return Valve ( DN50 to DN1600 )

Body Material: Ductile iron, also known as nodular cast iron, is the primary material used for the body of the check valve. Ductile iron offers high strength, durability, and corrosion resistance, making it suitable for various industrial applications. 

Swing, Lift, or Diaphragm Design: Ductile iron check valves can adopt different designs, such as swing check valves (with a hinged disc), lift check valves (vertical disc movement), or diaphragm check valves (flexible diaphragm). The choice of design depends on factors like flow characteristics and application requirements. 

Unidirectional Flow: Like all check valves, ductile iron check valves are designed to allow fluid to flow in one direction only. They automatically prevent reverse flow when the fluid tries to move in the opposite direction. 

Flapper, Disc, or Ball: The valve contains a sealing mechanism, such as a flapper, disc, ball, or other closure element, which blocks the flow when the fluid tries to reverse. 

Flanged or Threaded Ends: Ductile iron check valves typically have flanged or threaded ends for connection to pipeline systems. The end connections can be designed to comply with various industry standards. 

Automatic Operation: Ductile iron check valves operate automatically based on the fluid flow. There is no need for external power or manual operation. The valve opens when the fluid flows in the designated direction and closes when the flow tries to reverse. 

Water and Wastewater Systems: Ductile iron check valves are commonly used in water distribution systems, wastewater treatment plants, and other applications where preventing backflow is crucial. 

Industrial Processes: They find applications in various industrial processes, including chemical processing, oil and gas, and power generation. 

Varied Sizes: Ductile iron check valves are available in a range of sizes to accommodate different pipeline requirements. 

API, ANSI, or DIN Standards: Ductile iron check 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).