Flanged cast iron gate valves are a type of cast iron gate valve that uses flanged connections, primarily used for blocking or connecting pipeline media. They feature a compact structure, reliable sealing, and are suitable for controlling media such as water, steam, and oil.
Structural Features
Material: The valve body is made of gray cast iron or ductile cast iron, with some models using cast steel to enhance pressure-bearing capacity.
Sealing Design: The sealing surface employs stainless steel and hard alloy materials, combined with flexible graphite packing to ensure sealing performance. The gate is surrounded by a cast iron frame and transverse ribs to improve rigidity and wear resistance.
Drive Methods: Supports manual, electric, pneumatic, and other drive methods for flexible operation.
Application Scenarios
Suitable for blocking control of industrial pipeline media in petroleum, chemical, and thermal power plants.
Used in water conservancy, flood control, water supply, and drainage projects for water level regulation and flow control.
Technical Parameters
Working Pressure: Up to 1.0 MPa
Working Temperature: Generally ≤200°C, with some models capable of withstanding higher temperatures (e.g., cast steel models can withstand up to 600°C).
Applicable Media: Water, steam, oil, and some corrosive media (such as coal gas).
This valve complies with national standards such as GB/T12234, with a nominal diameter range of DN50 to DN700, suitable for various pipeline specifications.