Flange-connected steel gate valves are suitable for various pipelines with ANSI Class 150~900, PN 2.0~16.0MPa, JIS 10~20K, working temperature -29~425°C (carbon steel) and -40~500°C (stainless steel), and are used to cut off or connect the media in the pipeline.By selecting different materials, it can be applied to various media such as water, steam, oil, nitric acid, acetic acid, strong oxidizing media and urea. It has manual, bevel gear transmission and electric transmission.