Flanges are used in piping for making joints which can be opened at a later date. They are usually used for connecting piping to equipment, valves & control
valves etc.
A flanged joint is composed
of three separate and independent, although interrelated components: the flanges, the gasket, and the bolting,
which are assembled by yet another influence, the
assembler. Proper controls must be exercised in the selection and application for all these elements to attain a joint, which has acceptable leak tightness.
CLASSIFICATION OF FLANGES
Flanged joints may best be
classified by dividing them into two general parts.
Methods of attachment of Flange to Pipe.
Type of Facing on contact surface of flange proper.
