As i understand, it should be used in the pipelines where there are minimal or no leakage condition is expected. raise face due to its very shape, ensures a tight coupling with the gaskets. hence gasket is held with the pressure between the two raise faces of the mating flanges.
Weld Neck Raised Face flange
Raised Face Flanged End
Face Of Flange A flange has either of the two types of faces: 1. Raised face 2. Flat face The F.O.F is used to know the accurate dimension of the flange in order to avoid the minute errors in measurement in case of vertical or horzontal pipe linesFace of Flange
A SORF flange, or Slip-On Raised Face flange, is a type of flange commonly used in piping systems. It features a raised face that allows for a better seal when mated with a corresponding flange, typically using a gasket. SORF flanges are designed to slip over the pipe, providing ease of alignment and installation. They are popular in various industries due to their simplicity and effectiveness in connecting pipes, valves, and other equipment.
6A-6B flanges are ring type joint which is not developed for face to face make up, where the bolting forces act on gasket. 6A-6BX flanges are also ring type joint but it is developed with raised face hence the bolting forces act on this raised face and not on the gasket if it is properly placed. And also the raised prevent the flange damage from excessive bolting torque.
raised face valve can have a flat face flange. raised face valve is actually different in its cross-section rather than its flange face.
Raised face flange end
Weld Neck Raised Face flange
SWRF is a Socket Welded Raised Face flange
Slip-On Flat Face Flange. It means the face of the flange, the surface the physically touches the next flange is flat as opposed to raised (SORF Flange)
Weld Neck Raised Face flange
BLRF is a type of flange. BLRF-blind raised face flange
Raised Face Flanged End
Raised Face Through Bolt End.
Face Of Flange A flange has either of the two types of faces: 1. Raised face 2. Flat face The F.O.F is used to know the accurate dimension of the flange in order to avoid the minute errors in measurement in case of vertical or horzontal pipe linesFace of Flange
Raised face through bolted ends
Take your measuring tape on the inside of the flange, and measure end to end. Taht measurment will give you the take-off....