What is the difference between the connection surface form of flange flange and raised face flange FF and RF
What is the difference between the connection surface form of flange flange and raised face flange FF and RF
RF is a raised face flange and can be used for PN1.6~PN10MPA.
The FF is flat, the sealing is not as good as RF, the pressure is 1.6~2.0MPA (standard GB9113), and other forms such as RTJ and FM use higher pressure.
Gaskets for RF FF can be used universally.
Flange is also called flange or flange. Flanges are parts that connect pipes to pipes and valves, and are connected to pipe ends. There are holes on the flanges, and bolts make the two flanges tightly connected. The flanges are sealed with gaskets. Flanges are divided into threaded connection (wire connection) flanges, welding flanges and ferrule flanges.
