A flange is a method of connecting pipes, valves, pumps and other equipment to form a piping system. It also provides easy access for cleaning, inspection or modification. Flanges are usually welded or screwed to the pipe end and joined with bolts.
Here's some important information about flanges:
Types of Flanges: There are many types of flanges, each designed for specific applications. Common types include weld neck, slip-on, blind, socket weld, lap joint, and threaded flanges.
Flange Materials: Flanges are manufactured from a variety of materials such as carbon steel, stainless steel, and alloy steel. The choice of material depends on the application, fluid being transported, temperature, and pressure.
Flange Dimensions and Standards: Flange dimensions and standards are governed by organizations such as ASME (American Society of Mechanical Engineers) and ANSI (American National Standards Institute). These standards ensure interchangeability and safety. Common standards include ASME B16.5 and ASME B16.47.
Pressure-Temperature Ratings: Flanges are rated for specific pressure and temperature conditions. It's crucial to select a flange with a rating that meets or exceeds the operating conditions of the system.
Gaskets: Gaskets are used between flanges to create a seal. The selection of the correct gasket material is crucial to prevent leaks. Common gasket materials include rubber, compressed fiber, and PTFE.
Flange Installation: Proper installation is vital for the reliable operation of a flanged connection. This includes correct bolt tightening procedures and ensuring proper alignment.
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