Flanges And Its Types Classification Of Flange Face The flange face has an area beyond the normal (male) flange face. the other flange or mating flange has a matching recess (female) machined into the face. the female face is 3 16″ deep and the male face is 1 4″ high, both with a smooth finish. the outer diameter of the female face is used to locate and hold the gasket. Raised face flange has a small portion around the bore raised from the face. the gasket seat on this raised face. the height of the raised face depends on the flange pressure temperature rating, known as a flange class. for 150# & 300# height of the raised face is 1 16”, and above 300#, it is 1 4”. the inside bore circle type of gasket is.
Flanges And Its Types Classification Of Flange Face Meaning and types of flange faces. date: may 2, 2023. the flange face is the surface area that receives the gaskets. the material of the gasket seats over the flange face and creates an effective sealing under pressure. the flange face is designed per the asme b16.5 for flanges up to 24 inches and asme b16.47 for 26 inch flanges and larger. The flange face is the surface area that hosts the gasket. the 6 available types of flange faces are flat (ff), raised (rf), ring joint (rtj), lap joint, male and female (m&f), tongue and groove (t&g). flanges with different faces (that require different gaskets) shall never be mated to prevent leakage of the joint. Types of flange faces. different types of flange faces are used as the contact surfaces to seat the sealing gasket material. asme b16.5 and b16.47 define various types of flange facings, including the raised face, the large male and female facings which have identical dimensions to provide a relatively large contact area. To the asme b16.5 standard, class 150 and 300 steel flanges have a raised face height of 1 16 inch (1, 6mm); steel flanges exceeding class 300 use a 1 4 inch (6.4 mm) raised face. in an ideal world, the height of a raised face would increase as the class increases, but this is not the case in most standards; however, it is a logical generalization.
Flanges And Its Types Classification Of Flange Face Types of flange faces. different types of flange faces are used as the contact surfaces to seat the sealing gasket material. asme b16.5 and b16.47 define various types of flange facings, including the raised face, the large male and female facings which have identical dimensions to provide a relatively large contact area. To the asme b16.5 standard, class 150 and 300 steel flanges have a raised face height of 1 16 inch (1, 6mm); steel flanges exceeding class 300 use a 1 4 inch (6.4 mm) raised face. in an ideal world, the height of a raised face would increase as the class increases, but this is not the case in most standards; however, it is a logical generalization. The tongue and groove faces of the flanges need to match properly. one flange face has a raised ring (tongue) machined onto the flange face, while the mating flange has a matching depression (groove) machine into the face. tongue and groove facings are standardized in both small and large types. they differ from males and females in the inside. The height of the raised face above the bolting face plane is dictated by the flange’s class and the standard from which it is taken. for the asme b16.5 standard, steel flanges in classes 150 and 300 have a raised face height of 1 16 inch (1.6mm); steel flanges exceeding class 300 use a 1 4 inch (6.4mm) raised face.
Flanges And Its Types Classification Of Flange Face The tongue and groove faces of the flanges need to match properly. one flange face has a raised ring (tongue) machined onto the flange face, while the mating flange has a matching depression (groove) machine into the face. tongue and groove facings are standardized in both small and large types. they differ from males and females in the inside. The height of the raised face above the bolting face plane is dictated by the flange’s class and the standard from which it is taken. for the asme b16.5 standard, steel flanges in classes 150 and 300 have a raised face height of 1 16 inch (1.6mm); steel flanges exceeding class 300 use a 1 4 inch (6.4mm) raised face.
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