Flange types and their sealing surface configurations
Thread Content
Flange types and their sealing surface configurations Sequence Number Flange Type Applicable Conditions Description Temperature°C Pressure kg/cm2 1 Socket weld flange (used for water and gas pipes) ≤300 ≤10 Used for connecting pipelines carrying water, air, inert gases, etc. 2 Socket weld flange ≤300 ≤25 Used for general process fluids such as water, steam, and air. Rubber asbestos gasket or asbestos-wrapped gasket – for flat-faced welding flanges with a 3-profile; applicable to connections of gases and liquids that are irritating, flammable, explosive, toxic, and require tight sealing. Media such as ammonia. Rubber asbestos gasket plates can be used; when Pg≤40, asbestos wound gaskets can also be employed. 4 Grooved face butt-weld flanges ≤300 ≤25 Used for pipeline connections that are irritating, highly toxic, and require strict sealing. Such as highly toxic substances like hydrocyanic acid. It is generally not recommended for use. 5 Butt weld flanges 300-450 ≤25 Widely used for general fluids such as water, steam, and air in large quantities. The maximum temperature can reach 600°C.
I’m working on a project related to acrylonitrile, which involves hydrocyanic acid. An expert suggested that there are special requirements for the valves and flanges used in the pipelines associated with it; for example, long-handled valves must be used... Does anyone have experience in this area? I’d like to learn from you! Thank you first!