What does "F4" and "F5" mean in flanged valves?
Flanges generally do not have such a representationRefer to standard ISO 5211, which indicates the size of the valve drive connection, which is common on the valve
It's the flange code. Each code corresponds to different flange sizesYou can check the relevant flange standards
F4, F5 notation means: German standard series valves. F4/F5 is the model specification for German standard series valves. Such as: F4, F5 series products have German standard cast iron valve, German standard cast steel gate valve, German standard high and medium pressure gate valve, German standard flange gate valve, German standard electric gate valve, etc..Their connection is flanged. Applicable to: water, oil, natural gas and other switches, is widely used in petroleum, chemical, thermal power generation and other production sectors.
