Flange connection cast steel gate valve is suitable for the nominal pressure PN1.6~25.0MPa, working temperature -29~600°C petroleum, chemical, thermal power station and other conditions of the pipeline, cut off or put through the pipeline medium.

Its main structural features are:

1. The product has reasonable structure, reliable sealing, excellent performance and beautiful appearance.

2. Sealing surface surfacing cobalt-based hard alloy, wear resistance, corrosion resistance, abrasion resistance, long service life.

3. The stem has good corrosion resistance and abrasion resistance after tempering and surface nitriding treatment.

4. The valve is equipped with inverted sealing structure, and the sealing is reliable.

5. The material of parts and the size of flange and butt welding end can be reasonably selected according to the actual working conditions or users' requirements to meet various engineering needs.